2017 Gmc Sierra TSBs

occurrence.

guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

Technicians shouldrefer to Service Information for information regarding most accessories. Technicians mayalso contact PARTECHand/orthe Techline Customer Support Center for additional support.

correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

Panel Cluster, Radio, and Heater-Vent-Air Conditioning display blanks out, Bluetooth phone or Pandora connection dropped, the radio station or volume changes when operating the snow plow. Please advise the customer that engineering is aware of this concern and working on this issue.

issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.

overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminnants and adjust the engine oil level as needed.

factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the body harness. Install trailer brake controller harness General Motors part number 23184088 into Middle Bus Electrical Center (X61A).

caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.

has been sheared away.

General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.

test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.

engine oil consumption.

transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.

On 1500 series trucks and all sport utility vehicle with regular production option code IO3 radio the ambient air temperature sensor is hard wired to the engine control module and then the signal goes on high speed local area network to the body control module from there on low speed local area network to the radio. On 1500 series trucks and all sport utility vehicle with regular production option code IO4, IO5, or IO6 the ambient air temperature sensor is hard wired to the engine control module and then the signal goes on high speed local area network to the body control module from there on low speed local area network to the radio then Most 50 Bus to the Human Machine Interface. On 2500/3500 series trucks production option code IO3 radio the ambient air temperature sensor is hard wired to the instrument panel cluster and then the signal goes on low speed local area network to the radio. On 2500/3500 series trucks production option code IO4, IO5, or IO6 radio the ambient air temperature sensor is hard wired to the instrument panel cluster and then the signal goes on low speed local area network to the radio then Most 50 Bus to the Human Machine Interface.

issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.

one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include ?Vibration? ?Business Associate Code? and the last 8 of the Vehicle Identification Number.

Drive concern.

alignment pin has been sheared away.

that may have Diagnostic Trouble Code P06DD or no or low oil pressure. Technician will replace timing chain tensioner guide. If oil pump face is damaged and or worn thru replace oil pump. Inspect bearings for damage wear due to debris from oil pump.

after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.

characterizationusing the transmission unit number (TUN) off a replacement 8L90 RPO M5U automatic transmission to refer to the TUNslisted in this PI. If the TUN off the replacement transmission is listed they should refer to bulletin 18-NA-355 and perform a transmission fluid exchange due to possible fluid contamination. The dealer technician is to call technicalassistance after the fluid exchange to get the TUN unlocked so they will then be able tocomplete solenoid valve characterization procedure.

This may be caused by a broken rocker arm.Abroken rocker arms that could result in the valve dropping to the cylinder, causing a catastrophic failure and the engine requires replacement due to cylinder head and block damage. If a broken rocker arm is found check to see if the valve dropped into the cylinder if so the engine will need to be replaced.On occasions the valve will not drop, reinstall any valve keepers and replace all the intake rocker arms.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

Technicians shouldrefer to Service Information for information regarding most accessories. Technicians mayalso contact PARTECHand/orthe Techline Customer Support Center for additional support.

Before contacting engineers, remove the transmission oil pan and inspect for nickel to quarter size pieces of aluminum debris in the oil pan. The 2-3-4-6-8 and 4-5-6-7-8 reverse clutch assembly and the 1-3-5-6-7 clutch assembly may be broken in several pieces.

GDS 2.

severe internal engine damage.

This may be caused by a broken rocker arm.Abroken rocker arms that could result in the valve dropping to the cylinder, causing a catastrophic failure and the engine requires replacement due to cylinder head and block damage. If a broken rocker arm is found check to see if the valve dropped into the cylinder if so the engine will need to be replaced.On occasions the valve will not drop, reinstall any valve keepers and replace all the intake rocker arms.

which affects fuel injector function. Under certain circumstances one or more of the vehicle?s fuel injectors may deliver an improper amount of fuel to the engine. If this occurs, the Malfunction Indicator Lamp (Check Engine Light) will illuminate, the engine may idle or run rough, and the vehicle may stall. A diagnostic trouble code related to the fuel injector may be set. This special coverage only applies to vehicles in these states: California, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington. Dealers are to replace the fuel injectors as necessary. The repairs will be made at no charge to the customer.

Technicians shouldrefer to Service Information for information regarding most accessories. Technicians mayalso contact Partechand/orthe Techline Customer Support Center for additional support.

leaks.

transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.

service or aftermarket calibrations.

P018B diagnostic trouble codes. The following steps may help to determine if this is caused by a fuel pressure sensor not reading the low end of the pressure range. Technician is to make sure the engine is cold and install the Multiple Diagnostic Interface along with Global Diagnostic System 2. Navigate to fuel system depressurize and at engine idle depressurize the fuel system. The fuel pressure sensor value should drop to 0 and the engine will stall. If a sensor is causing this concern the suspected sensor will not drop to 0 the engine will stall however the sensor will still read 30 to 40 pounds per square inch.

after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.

6L80 Regular Production Option Code (MYC), 6L90 Regular Production Option Code (MYD) or 8L90 Regular Production Option Code (M5U) Automatic Transmission, now have Powertrain Grade Braking. Powertrain grade braking assists when driving on a downhill grade to help maintain desired vehicle speed by using the engine and transmission to slow the vehicle.

test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.

how toptier fuels should be used to reduce carbon build up.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

truck or the snowplow's headlights are flickering or inoperative. There may be a diagnostic trouble code B2575 and or a B2699 set in the body control module. Technician will need to contact the snowplow manufacturer for additional information on their headlight changeover system. Technician is to refer to the latest version of the General Motors up-fitter integration bulletin 116 for additional information these circuits. Technician can find this information at http://www.gmupfitter.com/, under the "Technical Bulletin" Tab and then "Show all bulletins."

White smoke and/or coolant odor may come from exhaust for an extended period of time at cold start as well. CauseCoolant getting into the cylinders, and provides direction for the repair.

This condidtion will occur within the first 5 minutes after the vehicle is started.his condition may be caused by a software anomaly that allows all four DTC's P0132, P0137, P0152, P0157 to set. All 4 DTCs must be in history for this PI to apply.

bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.

vehicles that have remote start is inoperative, power lift gate Regular Production Option Code (TB5) is inoperative with the ignition off, Crank no start, Start and Stall, and vehicles equipped with the diesel engine, the blower motor may stay on after the engine is turned off. Technician may find Diagnostic Trouble Code P2537 and/or P129Dset. Technician will need to Use a voltmeter and check circuit 5985 at the Engine Control Module and Transmission Control Module. If no or low voltage is found, use the wiring diagram in Service Information and perform normal circuit diagnosis.

or the vehicle has sat for a few hours.

In some circumstances, some 2014-2017 model year Cadillac Escalade, Chevrolet Silverado, Chevrolet Suburban, Chevrolet Tahoe, GMC Sierra, and GMC Yukon vehicles may have a condition where customers may experience increased brake pedal effort, hard brake pedal, and/or potentially increased stopping distance. The condition is more prevalent at low speed when softly applying the brakes. The engine mounted mechanical vacuum pump output may decrease over time decreasing the amount of vacuum/power brake assist. Failure to follow recommended oil change intervals could contribute to this condition. The Driver?s Information Center, (DIC) ?Service brake assist? alert will activate 2-5 minutes after the vacuum level drops, and a Diagnostic Trouble Code, (DTC) will also be set. Even where this condition occurs, the hydraulic brake system remains functional but may require additional pedal force. Please understand that even if the vehicle exhibits this condition, it meets all federal motor vehicle safety standards for brake performance. Dealers are to replace the vacuum pump and vacuum pump belt. The repairs will be made at no charge to the customer.

Drive concern.

Some vehicles, equipped with a Duramax Diesel engine, the transmission cooler lines may be rubbing on the front frame/bumper mount bracket. This condition could cause the cooler lines to leak. Transmission fluid may be seen on the ground under the front bumper. Some drivers may have difficulty selecting gears or experience transmission slip. This special coverage covers the condition described above for a period of 6 years or 72,000 miles (116,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to replace the transmission cooler lines. The repairs will be made at no charge to the customer.

General Motors has discovered an issue relating to the accuracy of the Government 5-Star Safety Ratings on the Monroney label for certain vehicles. Dealers will remove the Monroney label and affix a corrected label to the vehicle.

Certain vehicles, equipped with Power Take-off (PTO), may have a condition where the PTO option was not enabled. If the PTO is not enabled, the engine cannot increase its idle speed when engaging a mechanical or hydraulic PTO-driven accessory. Dealers will enable the PTO option, if necessary.

If snow and/or ice is present on the active grille air shutters, take pictures and submit through the Field Reporting Process.

taking a photo of the flex fuel pigtail as it appears BEFORE repairs are made.

customers concern of engine misfire, ticking noise and/or MIL on.

Three or Four Cylinder Mode.

Engineers by completely filling out requested reports.

time.

replace the pistons if found the cause of the oil consumption.

conditions of the new L5P 6.6L Diesel Engine.

conditions of the new L5P 6.6L Diesel Engine.

diagnosing a service driver assist message with a diagnostic trouble code B172E and or a B172F. The haptic seat motor has a pigtail lead coming off of it. In many cases the wiring pigtail near the haptic seat motor has broken and will require replacement.

This may be caused by a broken rocker arm. A broken rocker arms that could result in the valve dropping to the cylinder, causing a catastrophic failure and the engine requires replacement due to cylinder head and block damage. If a broken rocker arm is found check to see if the valve dropped into the cylinder if so the engine will need to be replaced. On occasions the valve will not drop, reinstall any valve keepers and replace all the intake rocker arms.

engine hours are not correct and display 0.0. Technician will need to program the Instrument Panel Cluster using Service Programming System.

test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.

Technician may find Diagnostic Trouble Code P026A. The owner's manual advises not to drive above 45 MPH with a snowplow installed. However, GM Engineering is aware of the concern and is investigating.

system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.

Customer has Warning Lamps and/Or coolant leaks present.

Technicians should refer to Service Information for information regarding most accessories. Technicians may also contact Partech and/or the Techline Customer Support Center for additional support.

In 2017 the K2XX introduced a “ Driver Door Open Prime ” (DDOP) feature that improves cold startability. The engineering investigation has determined that an intermittent pulse on the ECM RUN/CRANK input (during vehicle door unlock), initializes the Electronic Throttle Control (ETC) diagnostics that falsely sets P2101 when the DDOP occurs as the customer opens the driver door. Many of the reported P2101 failures show that the vehicle battery was in a reduced charge state (new dealer stock or extended radio operation with the engine off). Run the engine for 1 minute, soak the vehicle for 5 hours (required to re-initialize the DDOP) and verify that the P2101 does not reset. Return the vehicle to the customer

Incidental engine combustion events, can occur at certain temperature, loading conditions and throttle positions. When limited or zero torque converter slip is commanded during these events a ?chuggle? sensation may occur. Dealers are to reprogram the transmission control module.

if the engine or transmission is root cause of a vibration or shudder concern.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P2635, U0074 and or U18A2. Technician will need to follow published diagnostics for Diagnostic Trouble Codes U0074 would take priority over U18A2 if both set before addressing DTC P2635.

vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first hour of engine run time to allow break-in of the catalytic converter. Technician will need to use a Tech2 to check the verify engine run time on the Engine Hour Meter in the Instrument Panel Cluster Data Display/Data 1 List in the scan tool match. If the engine run time is less than one hour, the battery may have been disconnected, or another vehicle power loss event may have occurred, during vehicle manufacturing. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle. If the catalytic converter was replaced and the Diagnostic Trouble Codes set it may be a result of the engine run time restrictions no longer being in place since the vehicle is no longer new. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle.

conditions of the new L5P 6.6L Diesel Engine.

General Motors against defects in material or workmanship under the Bumper-to-Bumper New Vehicle Limited Warranty.

transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.

repair attempts that are being performed on customer?s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.

issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.

restriction that has ended for the hybrid/EV battery Pack, Hybrid/EV Powertrain Control Module (HPCM2), High Voltage Battery Interface Control Module 1 and 2, Drive Motor Generator Battery Cooling Blower.

automatic transmission fluid pan hear with thethe key on and engine off, or for up to one minute after the vehicle has been shut off should be deemed a normal characteristic.

issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.

factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the body harness. Install trailer brake controller harness General Motors part number 23184088 into Middle Bus Electrical Center (X61A).

vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D

that have a no crank or a start and then immediate stall, Service Engine Soon Malfunction Indicator lamp may not be on when the ignition is in the run position. Technician may find Diagnostic Trouble Codes P0513 and or P262B may also be set. Technician will pulled the driver sill plate and inspect the wiring for damaged or corroded circuits. Technician will repair any damaged or corroded circuits.

Engine Soon Malfunction Indicator Lamp on and Diagnostic Trouble Code P0300 - P0308 may set. Technician will inspect for lose sparkplug wire. If a spark plug wire is found lose check for a missing ?C? clip on the wire end for the ignition coil. If the clip is missing replace the wire.

Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

Option Code 9L7 Up-fitter Auxiliary Switches. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 110. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."

Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

This may be the result of a deformed or improperly seated steering shaft seal allowing engine compartment sounds into the vehicle. Dealers are instructed to replace or reinstall the boot as needed and are informed the condition is being reviewed by engineering.

restriction for the hybrid/EV battery Pack, Hybrid/EV Powertrain Control Module (HPCM2), High Voltage Battery Interface Control Module 1 and 2, Drive Motor Generator Battery Cooling Blower. The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance

cylinders may be caused by an internal ECM fault.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

Technician may find Diagnostic Trouble Codes P0101, P0299, P0712, P11CC, P11DC, P2002, P2463, P2627, P2A00, P2459, P22B6, P200C, P200E, P0263, P0266, P0269, P0272, P0275, P0278, P0281 and/or P0284. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern the technician should check for loose or leaking charged air cooler ductwork.

cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.

Customer has Warning Lamps and/Or coolant leaks present.

restriction for the hybrid/EV battery Pack, Hybrid/EV Powertrain Control Module (HPCM2), High Voltage Battery Interface Control Module 1 and 2, Drive Motor Generator Battery Cooling Blower. The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance

Customer has Warning Lamps and/Or coolant leaks present.

Panel Cluster, Radio, and Heater-Vent-Air Conditioning display blanks out, Bluetooth phone or Pandora connection dropped, the radio station or volume changes when operating the snow plow. Please advise the customer that engineering is aware of this concern and working on this issue.

Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0340 and P0341 setting at times. Technician should use normal published Service Information diagnostics. If normal Service Information diagnostics does not isolate the concern, inspect for corrosion in connector X154 located on the front cover next to the vacuum pump.

when getting a Service Programming System error code E4491 or E4423. In some cases Techline Customer Support Center may need to be contacted to resolve the issue.

a service power steering message displayed and or a power steering fluid leak.

the steering wheel jerks, whips or kicks back when turning.

of Malfunction Indicator Lamp Illuminated with One or More Glow Plug Control DTCs Set.

Engineering Information - Noise Originating from Front Shock/Strut While Traveling at Low Speeds and/or Going Over Bumps.

normal operation and no parts should be replaced for these conditions.

By working closely with our dealers and technicians, through the part restriction process, the General Motors team will gain a better understanding of any field concerns that may develop.

Damage.

General Motors has decided to conduct a Voluntary Emission Recall involving certain 2016 model year Chevrolet Colorado, GMC Canyon; 2017 model year Chevrolet Express, GMC Savana; 2017-2018 model year Chevrolet Colorado, Cruze, Silverado HD, GMC Canyon, Sierra HD and 2018 model year Chevrolet Equinox, GMC Terrain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle braking. Program the engine control module and transmission control module when applicable.

Turbochargers Returned to Warranty Part Center.

General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage). For vehicles within this warranty period, defective tires will be replaced on a pro rata adjustment basis according to the published distance-based schedule.

a fuel leak, fuel odor, and or engine stall.

a fuel leak, fuel odor, and or engine stall.

Rear Defogger Grid Inoperative and/or Will Not Defog Rear Window Properly

a Torque Converter Shudder.

of Malfunction Indicator Lamp Illuminated with DTCs P0335, P0340, or P0365 Set.

customers concern of engine misfire, ticking noise and/or MIL on.

General Motors against defects in material or workmanship under the Bumper-to-Bumper New Vehicle Limited Warranty.

concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set.

drivability concerns and/or MIL ON due to aftermarket oil bath air filter use.

engine oil consumption.

a MIL or a engine misfire due to a loose spark plug wire.

of the Air bag light illuminated and SIR codes set within the SIR module.

fuel system, etc., and Training Courses and Special Tools to the Service, Parts and Sales Personnel in order to familiarize them with the vehicle.

If a technician has duplicated, or the customer description aligns with the speeds mentioned in the idle speed description tables, the idle speed should be considered a normal characteristic of current vehicle design.

Diagnostic Trouble Codes, may find a temporary loss of Human Machine Interface communication with Global Diagnostic System 2. Technician should not replace the Human Machine Interface for this concern, power cycling of the Human Machine Interface fuse should restore communication. Technician should be advised that the Human Machine Interface and Global Diagnostic System 2 interaction concern has been reported to engineering for root cause and correction.

Technician may find Diagnostic Trouble Codes P0101, P0299, P0712, P11CC, P11DC, P20EE, P2002, P2463, P2627, P2A00, P2459, P22B6, P200C, P200E, P0263, P0266, P0269, P0272, P0275, P0278, P0281 and/or P0284. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern the technician should check for loose or leaking charged air cooler ductwork.

radio controls, Integrated Center Stack, display, and Media Disc Players are placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0340 and P0341 setting at times. Technician should use normal published Service Information diagnostics. If normal Service Information diagnostics does not isolate the concern, inspect for corrosion in connector X154 located on the front cover next to the vacuum pump.

cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.

Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P2635, U0074 and or U18A2. Technician will need to follow published diagnostics for Diagnostic Trouble Codes U0074 would take priority over U18A2 if both set before addressing DTC P2635.

repair vehicles that may have stalling shudder and/or hard shifting into 1st gear or reverse vibration on launch (with excessive crankshaft end play). Technician will test to determine if the crank shaft end play is within specification 0.0015–0.0086 inch. If end play is found to be out of specification, remove engine and inspect for possible crankshaft thrust bearing and/or crankshaft for wear. Inspect thrust bearing for wear on one side and crankshaft on that “mating” surface. If the thrust bearing has three vertical channels worn off replace connecting rod bearings, main bearings, thrust bearing and crankshaft. If working on a Corvette the oil tank with lines and oil cooler are both required to be replaced if equipped.

various concerns when using Bluetooth components. Technician should use the Preliminary Information to gather information from the customer on their Bluetooth device and the concern they are having before calling General Motors Technical Assistance Center.

Technician should inspect the head gaskets to ensure are not installed backwards. Technician should replace the head gasket if they are found installed backwards.

Diagnostic Trouble Codes, may find a temporary loss of Human Machine Interface communication with Global Diagnostic System 2. Technician should not replace the Human Machine Interface for this concern, power cycling of the Human Machine Interface fuse should restore communication. Technician should be advised that the Human Machine Interface and Global Diagnostic System 2 interaction concern has been reported to engineering for root cause and correction.

DTC P2101 Throttle Actuator Position Performance Set.

a fuel leak, fuel odor, and or engine stall.

how toptier fuels should be used to reduce carbon build up.

General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage). For vehicles within this warranty period, defective tires will be replaced on a pro rata adjustment basis according to the published distance-based schedule.

General Motors against defects in material or workmanship under the Bumper-to-Bumper New Vehicle Limited Warranty.

Recommendations.

on engine surfaces.

leaks.

restriction for the hybrid/EV battery Pack, Hybrid/EV Powertrain Control Module (HPCM2), High Voltage Battery Interface Control Module 1 and 2, Drive Motor Generator Battery Cooling Blower. The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance

vehicles that have remote start is inoperative, power lift gate Regular Production Option Code (TB5) is inoperative with the ignition off, Crank no start, Start and Stall, and vehicles equipped with the diesel engine, the blower motor may stay on after the engine is turned off. Technician may find Diagnostic Trouble Code P2537 and/or P129Dset. Technician will need to Use a voltmeter and check circuit 5985 at the Engine Control Module and Transmission Control Module. If no or low voltage is found, use the wiring diagram in Service Information and perform normal circuit diagnosis.

Code (L5P) E41Engine Control Module part number 12683624 restriction has ended.

normal operation and no parts should be replaced for these conditions.

of a malfunction indicator lamp illuminated.

Identification.

General Motors against defects in material or workmanship under the New Vehicle Warranty (in Canada, the Base Warranty Coverage). For vehicles within this warranty period, defective tires will be replaced on a pro rata adjustment basis according to the published distance-based schedule.

Noise Originating from Front Shock/Strut While Accelerating, Stopping, or Traveling Over Bumps.

and Canada

harness if water and/or corrosion is found in the connectors.

replacement.

replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.

long crank time during cold ambient air temperatures. Direct Injection systems run at higher pressures, and the mechanical pump on the engine must build up the required pressure before the first injection event occurs. Direct Injection engines may have slightly longer cold crank times than that of port fuel engines.

that have a no crank or a start and then immediate stall, Service Engine Soon Malfunction Indicator lamp may not be on when the ignition is in the run position. Technician may find Diagnostic Trouble Codes P0513 and or P262B may also be set. Technician will pulled the driver sill plate and inspect the wiring for damaged or corroded circuits. Technician will repair any damaged or corroded circuits.

factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the body harness. Install trailer brake controller harness General Motors part number 23184088 into Middle Bus Electrical Center (X61A).

General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle brakingProgram the engine control module, and transmission control module when applicable.

a check trailer message displayed but there is no trailer connected.

transmission or transfer case assembly replacement and information explaining the PQC process, Global Warranty Management Transaction submission, vehicle repair record retention and proper handling of assembly returns.

customers concern of engine misfire, ticking noise and/or MIL on.

General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle brakingProgram the engine control module, and transmission control module when applicable.

General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle braking. Dealers will program the engine control module, and transmission control module when applicable.

of Harsh, Delayed, and/or Improper Shifts.

a Torque Converter Shudder.

Malfunction Indicator Lamp Illuminated with DTC P22FE Set.

Both Front Low Beam, High Beam, Day Time Running Lamps (DRL) and Turn Signals Inoperative.

General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle brakingProgram the engine control module, and transmission control module when applicable.

restriction for the hybrid/EV battery Pack, Hybrid/EV Powertrain Control Module (HPCM2), High Voltage Battery Interface Control Module 1 and 2, Drive Motor Generator Battery Cooling Blower. The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance

radio controls, Integrated Center Stack, display, and Media Disc Players are placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.

Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.

truck or the snowplow's headlights are flickering or inoperative. There may be a diagnostic trouble code B2575 and or a B2699 set in the body control module. Technician will need to contact the snowplow manufacturer for additional information on their headlight changeover system. Technician is to refer to the latest version of the General Motors up-fitter integration bulletin 116 for additional information these circuits. Technician can find this information at http://www.gmupfitter.com/, under the "Technical Bulletin" Tab and then "Show all bulletins."

issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.

vehicles that may have a no crank concern. Technician will need to check the valve train for movement when the engine is cranked. If the valve train is not moving while the crankshaft is moving the front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the valve train is rotating during inspection, disconnect the Camshaft Position sensor and check if the engine will start. If the engine starts front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly. If the engine does not start with the Camshaft Position sensor disconnected the follow published “Engine Cranks But Does Not Run” diagnosis in Service Information. Also perform an Engine Compression Test and Cylinder Leakage Test in Service Information documents all results. If the Service Information procedures above isolate an engine mechanical concern then removed to inspect for a sheared cam sprocket locator pin. If the cam sprocket locator pin has sheared, replace the engine assembly.

Soon Malfunction Indicator Lamp on. Technician should follow published Service Information diagnostics that will lead to an oil pump replacement. Technician should replace the oil pump. If debris is found, the main and rod bearings should be inspected before engine replacement is considered.

may be noisy or vibrate when running. This concern will only occur when the temperatures is below 32 degrees Fahrenheit and if the blower motor is removed while still cold, ice may be found on the blower motor cage. This concern could be caused by water leaking or snow ingestion into the Heater-Vent-Air Conditioning case. Technician is to perform normal water testing diagnostics while the Heater-Vent-Air Conditioning is running, looking for water leaking past the plenum cover. If water is leaking past the cover remove the cover and install a 12x12 snow resistant screen to the fresh air intake. Reseal and install the plenum cover cap using Kent air dry sealer or equivalent.

with an engine that runs with an intermittent crank no start with a Diagnostic Trouble Code P0011 or P00C6 current or history. The Camshaft Position Actuator Solenoid Valve may be sticking or binding causing the valve timing to be retarded. Dealer will need to cycle the Camshaft Position Actuator Solenoid Valve by energizing it using Global Diagnostic System 2.

shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.

if the engine or transmission is root cause of a vibration or shudder concern.

This may be caused by a broken rocker arm.Abroken rocker arms that could result in the valve dropping to the cylinder, causing a catastrophic failure and the engine requires replacement due to cylinder head and block damage. If a broken rocker arm is found check to see if the valve dropped into the cylinder if so the engine will need to be replaced.On occasions the valve will not drop, reinstall any valve keepers and replace all the intake rocker arms.

installing aftermarket electrical accessories. Dealer should reference the latest version of General Motors Upfitter Integration Bulletin 115 for this information. It can be found at http://www.gmupfitter.com.

damage.

Certain vehicles may not have had the Diesel Engine Owner Manual Supplement and/or insert installed at the assembly plant. Dealers will insert the Owner Manual Diesel Engine Supplement in the vehicle.

Certain vehicles, equipped with a DuraMax Diesel Engine (L5P) and Dual Generators (KHB), may have been built with an accessory drive belt idler pulley intended for other applications. The pulley?s centerline and capacity differs from the design intent pulley. This difference in alignment and durability may cause the accessory drive belt at some point to come off the accessory drive system. Without an accessory drive belt, the vehicle will lose engine cooling, battery charging, power steering, power brakes, and air conditioning operation. All other systems will function normally. Delaers will replace the idler pulley the belt or both.

Certain vehicles may have a condition in which the transfer case actuator motor brake sticks in the open position inside the transfer case actuator assembly. If 1) the actuator motor brake sticks open, 2) the vehicle is on asurface with an angle greater than zero but less than two degrees, 3) the vehicle is parked in 4LO, 4) the system is warm, and 5) the vehicle ignition is turned ?Off,? there is potential for vehicle rollback due to the range fork slipping into neutral. The brake sticking condition will set diagnostic trouble code C0326 58 and a ?Service AWD? warning will appear on the driver information center. Dealers are to replace the transfer case actuator assembly.

Code (L5P) EGR Valve Part number 12677567 will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

Option Code 9L7 Up-fitter Auxiliary Switches. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 110. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."

Technician may find Diagnostic Trouble Codes P0101, P0299, P0712, P11CC, P11DC, P2002, P2463, P2627, P2A00, P2459, P22B6, P200C, P200E, P0263, P0266, P0269, P0272, P0275, P0278, P0281 and/or P0284. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern the technician should check for loose or leaking charged air cooler ductwork.

Code (L5P) E41Engine Control Module part number 12683624 will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation.

Technician may find Diagnostic Trouble Codes P0101, P0299, P0712, P11CC, P11DC, P20EE, P2002, P2463, P2627, P2A00, P2459, P22B6, P200C, P200E, P0263, P0266, P0269, P0272, P0275, P0278, P0281 and/or P0284. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern the technician should check for loose or leaking charged air cooler ductwork.

repairing vehicles that may have unwanted grade braking, reduced engine power with no Driver Information Center messages “ Brake Pedal Override Feature “, transmission busy or frequent shifting up or down, and Diagnostic Trouble Codes P057B, P057C, and/or P057D may or may not be set. Technician will use this preliminary information to find the brake pedal position data parameters in the scan tool, and also to provide some additional diagnostic help. These issues may be caused by an incorrect brake pedal position sensor input to the engine control module. Technician will verify with the scan tool if the engine control module has the correct parameters for the brake pedal position sensor. If an engine control module brake pedal position sensor relearn is performed, the truck may be temporarily repaired until the intermittent wiring issue between the engine control module and brake pedal position sensor occurs again. On 2014 and newer trucks inspect and repair any damage to X115 and X119. On the 2014 and previous trucks inspect and repair any damage to X205.

in effect for 2017 and 2018 model yearsthrough the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

Turbocharger and Actuator parts restriction has ended.

repair vehicles with a rough idle and/or vibration at idle in Drive. This condition will not be present in Park, or Neutral. This concern may be caused by ground out within the one or both engine mounts. Technician will use CH-51450-A (Pico Oscilloscope) to measure the vibration disturbance. If the vibration concern is E1.5 in the horizontal / lateral direction with Pico sensor mounted in seat track as indicated ? continue with steps to reduce the amplitude of the vibration by adding spacers in key locations to reduce ground out within the engine mounts. The 6.2L engine has a characteristic E1 which can be felt, and may be described as a lopey idle. Do not confuse 6.2L E1 characteristic (not caused by mount ground-out), with E1.5 normal idle characteristics being transmitted into the truck via ground-out thru the engine mounts. If measuring high at the seat track 12 mg or greater; replacement of the engine mounts should help reduce the amplitude of the vibration. If the disturbance measures at the seat track as E1.5 lateral in the range of approximately 2.5 - 8 mg using a tri-axis sensor. Then place tri-axis Pico sensor on the inboard seat track forward-most location to record measurement of the rough idle vibration concern. With the Heater-Vent-Air Conditioning on perform several short heavy launch events from stop to stop to bring the temperatures back up while attempting to re-create the rough idle vibration in Drive with Pico sensor placed on inboard seat track; while the vibration is active ? Record Pico reading. This method seems to provide better results than extended test drives. If the Pico reading for E1.5, with vibration active, at specified seat track location measures close to 2mg or less use Service Information to diagnose rough idle / vibration. If the Pico reading for E1.5, with vibration active, at the inboard forward seat track l

Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will use Global Diagnostic System 2 to review the Firmware Over-the-Air version and the OnStar Customer Identifier and contact General Motors Technical Assistance Center for further assistance.

engine soon malfunction indicator lamp, antilock braking system malfunction indicator lamp, service suspension system message, misfire, hesitation, no crank, heater-vent-air conditioning inoperative. Technician may find F11UA, F104UA, F35UA, and or F60UA blown. Technician should inspect the engine harness near the vacuum pump pulley to be chafing. Technician will need to reroute the wire harness and repair and damaged wires.

Battery Disconnector Relay, K114B Hybrid/EV Powertrain Control Module, and G14 Drive Motor Generator Battery Cooling Blower has been placed on parts restriction by General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

restriction by General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

parts restriction by General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

Code (L5P) E41Engine Control Module part number 12670950 will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

Panel Cluster that will have the correct miles per hour, when ?Teen Driver? is set the radio will show a lower miles per hour on the radio display. Dealer should advise the customer that engineering is currently investigating a solution.

turn on unwanted after a key cycle when the radio was shut off before the key was turned off. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

parts and labor due to the turbo-chargers are being returned to the Warranty Parts center damaged, improperly assembled or missing parts and advising to properly package the complete turbochargers. (New models and RPOs added)

a list of websites for additional information.

information for the new tires that the vehicle are equipped with and that they are covered by General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage) and for vehicles within this warranty period, the defective tires will be replaced on a pro rata adjustment basis. It also provides GWM Transaction information.

General Motors against defects in material or workmanship under the Bumper-to-Bumper New Vehicle Limited Warranty.

may set.The vehicle may also exhibit a hesitation or stalling condition.Excessively Hot and sustained ambient temperatures over 100F (37.7 C) degrees Mainly in TX, AZ, UT, NV, CA, NM (could be any state) causingVapor buildup in fuel feed line.Customers can be advised to utilize fuels with octane levels greater than 91, Refrain from extended idleing periods if possible, park vehicles in covered garage.Replacing the fuel pump will not repare this concern.

General Motors Engineering is investigating the condition, and this PI will be updated when further information is available.

address DTC P054F setting.This PI updated from engineering aware of concern to valid calibration covered in TSB 17-NA-171.

This PI updated from engineering aware of concern to valid calibration covered in TSB 17-NA-171.

address ahesitation, bump, chuggle, jerk or a feeling of harshness between 25 and 45 MPH, light acceleration with the transmission in 3rdgear. This PI updated from engineering aware of concern to valid calibration covered in TSB 17-NA-171.

overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminnants and adjust the engine oil level as needed.

retain the previous settings and will go to the Home Icon screen when the vehicle is restarted. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is currently evaluating this concern.

movie the audio does not match the video when playing though the vehicles speakers. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

Technician can check Service Information for some accessories. Technician can also contact Partect for assistance. Technician can also contact Techline Customer Support Center for programming issues.

Engineering Information - Noise Originating from Front Shock/Strut While Traveling at Low Speeds and/or Going Over Bumps.

Malfunction Indicator Lamp Illuminated with DTC P22FE Set.

Both Front Low Beam, High Beam, Day Time Running Lamps (DRL) and Turn Signals Inoperative.

Engine Light, Delayed Shifts and/or Transmission Stuck in Gear with DTC P0751, P0752, P0756, P0757, P0761 or P0762 Set.

replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.

General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage). For vehicles within this warranty period, defective tires will be replaced on a pro rata adjustment basis according to the published distance-based schedule.

By working closely with our dealers and technicians, through the part restriction process, the General Motors team will gain a better understanding of any field concerns that may develop.

1/2 and 2/3 and Sputter Applying Throttle Between 0 and 30%, Rough idle. Technician may find Diagnostic Trouble Codes P0101, P0171, P0172, P0174, and or P0175. Technician should inspect for cast flashing near the Mass Air Flow sensor as seen below.

Turbocharger and Actuator will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

Code (L5P) EGR Valve Part number 12677567 will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

equipped with the 6.6L diesel engine Regular Production Option Code L5P the following fuel system part numbers 12678990, 12678991, 12678992, 12678993, 12647909, and 55495697 will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

Technician can check Service Information for some accessories. Technician can also contact Partect for assistance. Technician can also contact Techline Customer Support Center for programming issues.

possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, an out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.

Technician are advised to use GDS2 software to confirm which shift is causing the concern. On low mileage vehicles technician are instructed to perform a drive learn procedure. On higher mileage vehicles technicians are instructed to remove the transmission fluid pan and inspect for debris. If debris is found technicians should disassemble and inspect for root cause of the concern and repair the transmission as needed. If no debris is found technicians are advised to replace the valve body.

Technicians will use Global Diagnostic System 2 software to confirm which shift is causing the concern. On low mileage vehicles technician are instructed to perform a drive learn procedure. On higher mileage vehicles technicians are instructed to remove the transmission fluid pan and inspect for debris. If debris is found in the pan, technicians should disassemble and inspect for root cause of the concern and repair the transmission as needed. If no debris is found technicians are advised to replace the valve body.

system that has progression tones when pressing the blue or red button. Technician will need to contact General Motors Technical Assistance Center with the scan tool data from the OnStar system.

in effect for the first full year of vehicle production through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

turn on unwanted after a key cycle when the radio was shut off before the key was turned off. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

engines using Tech 2 or GDS 2.

GM does not endorse any repairs that involve welding, bending, straightening or re-machining. Only cosmetic refinishing of the wheel's coatings, using recommended procedures, is allowed.

Turbocharger and Actuator will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

repair vehicles that may have stalling shudder and/or hard shifting into 1st gear or reverse vibration on launch (with excessive crankshaft end play). Technician will test to determine if the crank shaft end play is within specification 0.0015–0.0086 inch. If end play is found to be out of specification, remove engine and inspect for possible crankshaft thrust bearing and/or crankshaft for wear. Inspect thrust bearing for wear on one side and crankshaft on that “mating” surface. If the thrust bearing has three vertical channels worn off replace connecting rod bearings, main bearings, thrust bearing and crankshaft. If working on a Corvette the oil tank with lines and oil cooler are both required to be replaced if equipped.

may set.The vehicle may also exhibit a hesitation or stalling condition.Excessively Hot and sustained ambient temperatures over 100F (37.7 C) degrees Mainly in TX, AZ, UT, NV, CA, NM (could be any state) causingVapor buildup in fuel feed line.Customers can be advised to utilize fuels with octane levels greater than 91, Refrain from extended idleing periods if possible, park vehicles in covered garage.Replacing the fuel pump will not repare this concern.

It appears that anytime the engine comes to a stall or near stall the "Auto Stop" message on the DIC will light momentarily (just a second and may blink on several times then go out).It is unknown why this anomaly occurs.It appears this gauge cluster can be used with an auto stop vehicle even though trucksdo not have auto stop at this time. It may be for future use on other trucks. Bottom line is ignore this message and fix the issue of stalling or near stall concern.

may set.The vehicle may also exhibit a hesitation or stalling condition.Excessively Hot and sustained ambient temperatures over 100F (37.7 C) degrees Mainly in TX, AZ, UT, NV, CA, NM (could be any state) causingVapor buildup in fuel feed line.Customers can be advised to utilize fuels with octane levels greater than 91, Refrain from extended idleing periods if possible, park vehicles in covered garage.Replacing the fuel pump will not repare this concern.

vehicles that have remote start is inoperative, power lift gate Regular Production Option Code (TB5) is inoperative with the ignition off, Crank no start, Start and Stall, and vehicles equipped with the diesel engine, the blower motor may stay on after the engine is turned off. Technician may find Diagnostic Trouble Code P2537 and/or P129Dset. Technician will need to Use a voltmeter and check circuit 5985 at the Engine Control Module and Transmission Control Module. If no or low voltage is found, use the wiring diagram in Service Information and perform normal circuit diagnosis.

Option Code L83, L86, or LV3 may have an oil consumption concern were one quart in 2000 miles is being used. Dealer will confirm oil level was properly checked per Owner’s Manual, and check the bolt torque on the Valve Lifter Oil Manifold Assembly, before doing any repairs to the vehicle.

In 2017 the K2XX introduced a “Driver Door Open Prime” (DDOP) feature that improves cold startability. The engineering investigation has determined that an intermittent pulse on the ECM RUN/CRANK input (during vehicle door unlock), initializes the Electronic Throttle Control (ETC) diagnostics that falsely sets P2101 when the DDOP occurs as the customer opens the driver door. Many of the reported P2101 failures show that the vehicle battery was in a reduced charge state (new dealer stock or extended radio operation with the engine off).Run the engine for 1 minute, soak the vehicle for 5 hours (required to re-initialize the DDOP) and verify that the P2101 does not reset.Return the vehicle to the customer

engine Regular Production Option Code (L5P) has ended.

long crank time during cold ambient air temperatures. Direct Injection systems run at higher pressures, and the mechanical pump on the engine must build up the required pressure before the first injection event occurs. Direct Injection engines may have slightly longer cold crank times than that of port fuel engines.

Technician may find Diagnostic Trouble Code P054F set. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern General Motors Engineering is aware of this concern and is working on a correction. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.

that may have an OnStar Turn-By-Turn Navigation the system that is inoperative. Technician verifies there are no Diagnostic Trouble Codes are present in the Antilock Braking System and Vehicle Communication Interface Module of the vehicle. If no Diagnostic Trouble Codes found call OnStar using the Blue button on the OnStar key pad and ask the advisor for a turn by turn route. Also make a OnStar personal call and a call into the vehicle. If normal diagnostics do not lead to a resolution technician will need to call General Motors Technical Assistance Center for further assistance.

Indicator Lamp on or engine misfire, rough idle, extended crank, or crank no start in some cases. Technician will need to perform published Service Information diagnostics. If technician finds carbon, an upper engine and valve cleaning should be performed. Update added part numbers for the cleaner and model years.

Technical Assistance Center.

one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include “Vibration” “Business Associate Code” and the last 8 of the Vehicle Identification Number.

Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

chuggle, fishbite or roughness that can be felt in 3rd to 6th gear, torque converter clutch locked, low rpm, when tipping into throttle to load engine. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

Technician may find Diagnostic Trouble Codes P0101, P0299 and / or P11DC. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern the technician should check for loose or leaking charged air cooler ductwork.

Technician may find Diagnostic Trouble Code P10D1 set. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern General Motors Engineering is aware of this concern and is working on a correction. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

General Motors has discovered an inadvertent error in the Parts Content Information portion of the window label on certain vehicles, which displays US/Canadian Parts Content for the vehicle, and Country of Origin (COO) information for the engine and transmission on these vehicles. As a result, the label displayed incorrect parts content percentages and COO information for the engines and transmissions on these vehicles. GM will contact involved owners of the affected to notify them of the situation. This label error has no effect on the safety or operation of the vehicles. Dealers are to affix a corrected new replacement label to the vehicle.

Certain vehicles, equipped with 6.6L diesel engine (RPO L5P), may not have had the Diesel Engine Owner Manual Supplement and/or insert installed at the assembly plant. Dealers will insert the Owner Manual Diesel Engine Supplement in the vehicle.

portion of the window label on certain vehicles, which displays US/Canadian Parts Content for the vehicle, and Country of Origin (COO) information for the engine and transmission on these vehicles. As a result, the label displayed incorrect parts content percentages and COO information for the engines and transmissions on these vehicles. GM will contact involved owners of the affected to notify them of the situation. This label error has no effect on the safety or operation of the vehicles. Dealers are to affix a corrected new replacement label to the vehicle.

Technician may find Diagnostic Trouble Codes P1016 and / or P1017 set. Technician will need to follow publish Service Information diagnostics first. If Service Information diagnostics do not isolate a root cause of the concern General Motors Engineering is aware of this concern and is working on a correction. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

loss of power steering assist, steering wheel jerks or kicks back when turning, Service Stabilitrak message with warning chime, engine stall, Instrument Panel Cluster going blank or inoperative, radio/Integrated Center Stack going blank, Heater-Vent-Air Conditioning going blank, hood ajar message and/or dome lamps flash when shifting into reverse, alarm sounds when locking doors or door locks cycling, and or wipers continue to run for a short time after turning off and then stop/park in the incorrect location. Technician may find Diagnostic Trouble Codes U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, C0710, U1510, B127B, B2605, B3600, C0800, U0428, U0452, U0131, and P0513 set in the vehicle. Check the body control module ground at the G218 location. The front dash insulator mat may be trapped between the ground eyelet and the body stud. Remove the round nut and eyelet and cut the front dash insulator mat away from the ground stud so it no longer interferes with the ground stud and reinstall the eyelet and ground nut. Technician will also inspect the starter solenoid battery cable for shorting out on the starter heat shield. Technician will need to voltage drop the battery cables. The battery should be tested using the GR8. X183 or X133 should be inspected for any broken/loose/backed out terminals.

chuggle, fishbite or roughness that can be felt in 3rd to 6th gear, torque converter clutch on, low rpm, when tipping into throttle to load engine. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

chuggle, fishbite or roughness that can be felt in 3rd to 6th gear, torque converter clutch on, low rpm, when tipping into throttle to load engine. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

Code (L5P) following fuel system part numbers 2678990 (Right Side Fuel Rail), 12678991 (Left Side Fuel Rail), 12678992 (Fuel Injector), 12676904 (Fuel Injection Pump), and 55495697 (Valve Kit) will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first hour of engine run time to allow break-in of the catalytic converter. Technician will need to use a Tech2 to check the verify engine run time on the Engine Hour Meter in the Instrument Panel Cluster Data Display/Data 1 List in the scan tool match. If the engine run time is less than one hour, the battery may have been disconnected, or another vehicle power loss event may have occurred, during vehicle manufacturing. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle. If the catalytic converter was replaced and the Diagnostic Trouble Codes set it may be a result of the engine run time restrictions no longer being in place since the vehicle is no longer new. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle.

Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will need to ensure campaigns 14395 or 15086 are completed. Technician will need to use Global Diagnostic System 2 and gather information and contact General Motors Technical Assistance Center for further assistance.

chuggle, fishbite or roughness that can be felt in 3rd to 6th gear, torque converter clutch on, low rpm, when tipping into throttle to load engine. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

loss of gridlines in the rear camera display screen and a "Service Rear Vision System" message that both happen at the same time. Technician should check for Diagnostic Trouble Codes and follow published Service Information diagnostics for the Diagnostic Trouble Codes. If not Diagnostic Trouble Codes stored and the concern was duplicated or the customer described the concern, dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is currently evaluating this concern.

turn on unwanted after a key cycle when the radio was shut off before the key was turned off. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

truck or the snowplow's headlights are flickering or inoperative. There may be a diagnostic trouble code B2575 and or a B2699 set in the body control module. Technician will need to contact the snowplow manufacturer for additional information on their headlight changeover system. Technician is to refer to the latest version of the General Motors up-fitter integration bulletin 116 for additional information these circuits. Technician can find this information at http://www.gmupfitter.com/, under the "Technical Bulletin" Tab and then "Show all bulletins."

radio controls, Integrated Center Stack, display, and Media Disc Players are placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

Option Code 9L7 Up-fitter Auxiliary Switches. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 110. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."

General Motors against defects in material or workmanship under the New Vehicle Warranty (Base Warranty Coverage). For vehicles within this warranty period, defective tires will be replaced on a pro rata adjustment basis according to the published distance-based schedule.

Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

and/or momentary lack of power after cold starting the engine and immediately placing the transmission in gear. Technician should follow published Service Information diagnostics first. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.

Code (L5P) following fuel system part numbers 2678990 (Right Side Fuel Rail), 12678991 (Left Side Fuel Rail), 12678992 (Fuel Injector), 12676904 (Fuel Injection Pump), 12647909 (Fuel Pressure Sensor) and 55495697 (Valve Kit) will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

hot with the snow plow installed. Do not exceed 64 kilometers per hour / 40 miles per hour with a snow plow mounted to the vehicle even if equipped with VYU. The vehicle could overheat and be damaged.

Regular Production Option Code (L5P) will be placed on a parts restriction through the Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

placed on a parts restriction through the Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

Oxidation Catalyst, Diesel Particulate Filter and Particulate Sensor will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation.

system will be unable to enter addresses that contain diacritics using the touch screen. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

that have a no crank or a start and then immediate stall, Service Engine Soon Malfunction Indicator lamp may not be on when the ignition is in the run position. Technician may find Diagnostic Trouble Codes P0513 and or P262B may also be set. Technician will pulled the driver sill plate and inspect the wiring for damaged or corroded circuits. Technician will repair any damaged or corroded circuits.

If a technician has duplicated, or the customer description aligns with the speeds mentioned in the idle speed description tables, the idle speed should be considered a normal characteristic of current vehicle design.

installing aftermarket electrical accessories. Dealer should reference the latest version of General Motors Upfitter Integration Bulletin 115 for this information. It can be found at http://www.gmupfitter.com.

after switching from the factory headlamps to the snowplow headlamps. There may be a diagnostic trouble code B2575 and or a B2699 set in the body control module. Technician is to refer to the latest version of the General Motors up-fitter integration bulletin 116 for additional information these circuits.

power sliding rear window (RPO A48) may have areas of high electrical resistance on the rear defroster circuit. This could be caused, in part, by mechanical stress from opening and closing the rear power window, intrusion of debris, and use of the rear defroster. Over time, this condition could generate heat that could melt the areas surrounding the circuit. In rare instances, this heat could cause a non-propagating fire, increasing the risk of property damage or injury. Dealers will replace the buss bar covers and contact cover. If the rear window or sliding glass assembly appears damaged due to an occurrence of high electrical resistance on the rear defroster circuit, they should also be replaced.

applications.

applications.

at g218, Inspecting for a short at the starter B+ to shield and testing for a faulty battery.

inoperative due to the F2DL and/or the F8DL fuse(s) being open. Inspect the center console harness area at the hinge pivot point for chaffed circuits.

Number in eSI and how to locate the part(s) in the EPC.

temperatures below -6C or 20F, accompanied by start and stall, no start, loss of power and MIL illuminated. Technicians may find DTCs P0087, P018B, P228A, P228B or P2635 set in ECM.

customers concern.

replacements.

concerns.

transactions when doing wiring repairs.

replacements.

(DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.

finish".

repair them if found.

found.

On some vehicles the heat shrink tube length on the battery positive terminal is shorter than design intent. If a customer/dealer technician is working near the positive battery terminal under the hood, contacting bare metal on the terminal and ground could potentially create an arc. Dealers will add a section of heat shrink to the positive battery cable.

endedthepart restriction for the A15, Starter Generator (MGU). The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance.

a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.

detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.

when replacing a module.

replacements.

front shock electrical connector terminals. Technician will need to slightly bend the end of the J-38125-12A release tool. There is a purple Terminal Position Assurance that will align itself in the release position when the release tool is inserted into the release hole. There is a metal locking tab on the terminal that will need to be pushed in before the terminal will pull out of the connector.

that have a click, rattle or a squeak nose coming from the dash. Technician will use Service Information to locate the Accessory AC and DC Power Control Module located to the right of the steering column. Remove the power inverter module and apply two sided tape to the module bracket to insulate it from the mount. The instrument panel accessory bezel will also need to be removed. Apply flocking tape to the instrument panel accessory bezel retainers. Also the instrument panel extension will need to be removed. Apply foam tape around connectors located under grill to prevent them from rattling on grill. Apply flocking tape to the instrument panel extension retainers and apply a strip of foam tape along the edge of the grill to isolate the grill from the dash.

backlighting will stay on even after the ignition has been turned off and the key has been removed for several minutes, eventually the battery will drain. Technician may find following fuses F23DL F22DL F30DL F31DL F32DL with the ignition key in the off position to have voltage. Technician should not replace the Transfer Case Control Module. Technician will need to install a diode, part number 12112422, across the coil of the solenoid. It is important that the striped end of the diode be connected to the positive terminal of the coil and the other end of the diode be connected to ground.

connector for missing weather pack seals that could allow water intrusion into the connector and lead to corrosion on the terminals.

Crank,SIR Light / Service Airbag Message, Service Suspension Message,Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback,HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164,U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.

a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.

“Service 4WD Message” displayed in the Driver Information Center. Technician may find Diagnostic Trouble Codes C0392 or C0396. Technician should check the terminal tension on the Transfer Case Control Module X1 connector. Technician should repair any terminal that have poor terminal tension.

and setting DTCU1524 because of a loss of voltage to the Seat Heating Control Module.

the integrated center stack, the radio, the human machine interface, and the vehicle communication interface module. There are pictures of all the individual modules for identification purposes.

concern of the display is showing 32° F (0° C) after a battery or reprogramming a module. The outside temperature will begin to update if driven above 20 mph for at least 5 minutes. If the vehicle speed drops below 20 mph, the timer will reset and the display will stop updating. Once the display starts to update it may take several more minutes of driving above 20 mph for the display to fully update. Also if the vehicle is shut off for more than 8 hours the display will update when the ignition is turned on.

corrosion is found.

with/without audio, by checking the the wiring harness, ECU and reprograming the HMI software update, if the wiring or ECU are not the cause.

Starts At Home Screen Unwanted and Unable To Enter Certain Addresses Using The Touch Screen due to a calibration concern.

malfunction ? may set DTC B2462, B2470 or B125C - and/or water leak on headliner at sun visor or overhead console areas, possible battery drain concern.

Loss of Steering Assist due to a software abnormality.

front camera module.

E5659, M5304, and/or M5530 may be displayed in TIS2web when the technician is programming any module. If this concern is encountered, the technician should start by ensuring that the module being programmed is not a used module and that the VIN matches on VIN plate, TIS2web programming screen, and GDS2 module identification information screen.

Waiting for Update Media Message, Voice Command For Calling Bluetooth Phone Contacts Inoperative, Intermittent Loss of Rear Camera Gridlines, Service Rear Vision System Message, Radio Turns On Unwanted At Startup, and/or Navigation Radio Destination State Defaults To WV, Intermittent Radio/display Resets, Volume Control Inoperative.

reprogram modules.

front camera module.

This usually occurs after recently filling the DEF tank with the ignition in the on position due to some DEF fill equipment uses pumps that create a high level of temporary aeration of the DEF fluid being dispensed in the tank.

front camera module.

and/or Battery Light is Flashing and the procedures to turn the transport mode message on and off.

Personalization Selections Intermittently Missing from Comfort and Convenience Menu due to a calibration concern.

fuel pump at temperatures below -6C or 20F, accompanied by start and stall, no start, loss of power and MIL illuminated. Technicians may find DTCs P0087, P018B, P228A, P228B or P2635 set in ECM.

restriction for theGenerator Control Module (GCM). The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance

and/or Battery Light is Flashing and the procedures to turn the transport mode message on and off.

No WiFi Operation, and/or Limited OnStar Module Functionality After OnStar Module Replacement for Another Condition.

malfunction ? may set DTC B2462, B2470 or B125C - and/or water leak on headliner at sun visor or overhead console areas, possible battery drain concern.

detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.

replacements.

Personalization Selections Intermittently Missing from Comfort and Convenience Menu due to a calibration concern.

Crank,SIR Light / Service Airbag Message, Service Suspension Message,Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback,HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164,U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.

12671083) for 2017 – 2018 vehicles with the 6.6 L5P diesel.

error in the security system that does not allow the BCM to be reprogrammed.

replacements.

by pressing the blue button to On Star.

ring sizes and applying a QR code sticker or barcode sticker to a key fob.

replacement.

front shock electrical connector terminals. Technician will need to slightly bend the end of the J-38125-12A release tool. There is a purple Terminal Position Assurance that will align itself in the release position when the release tool is inserted into the release hole. There is a metal locking tab on the terminal that will need to be pushed in before the terminal will pull out of the connector.

restriction for the A15, Starter Generator (MGU). The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance.

unable to rotate ignition key concern. When the concern is present the steering wheel will need to be rotated in either direction to alleviate the pressure between the steering column lock pin and lock plate. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.

intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.

Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics.

There is no avalible setting or Body Control Module calibration to turn off the auto door locks.

reprogram modules that have been already reprogrammed.

the vehicle, with sensors present and customer may assume the rear park assist feature is available, but inoperative.

corrosion is found.

concerns.

and/or Battery Light is Flashing and the procedures to turn the transport mode message on and off.

hesitation or a stalling condition while in ambient temperatures 100 degrees or higher. Technician may find Diagnostic Trouble Codes P2635 and or P018B set. The dealer is advised to replace the in tank fuel pump module assembly to correct the condition.

a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.

intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.

hesitation or a stalling condition while in ambient temperatures 100 degrees or higher. Technician may find Diagnostic Trouble Codes P2635 and or P018B set. The dealer is advised to replace the in tank fuel pump module assembly to correct the condition. Dealer directed to follow latest version of PIP5507 if the fuel pump does not correct the concern.

concern of the display is showing 32° F (0° C) after a battery or reprogramming a module. The outside temperature will begin to update if driven above 20 mph for at least 5 minutes. If the vehicle speed drops below 20 mph, the timer will reset and the display will stop updating. Once the display starts to update it may take several more minutes of driving above 20 mph for the display to fully update. Also if the vehicle is shut off for more than 8 hours the display will update when the ignition is turned on.

backlighting will stay on even after the ignition has been turned off and the key has been removed for several minutes, eventually the battery will drain. Technician may find following fuses F23DL F22DL F30DL F31DL F32DL with the ignition key in the off position to have voltage. Technician should not replace the Transfer Case Control Module. Technician will need to install a diode, part number 12112422, across the coil of the solenoid. It is important that the striped end of the diode be connected to the positive terminal of the coil and the other end of the diode be connected to ground.

Crank,SIR Light / Service Airbag Message, Service Suspension Message,Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback,HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164,U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.

concern of the display is showing 32 F (0 C) after a battery or reprogramming a module. The outside temperature will begin to update if driven above 20 mph for at least 5 minutes. If the vehicle speed drops below 20 mph, the timer will reset and the display will stop updating. Once the display starts to update it may take several more minutes of driving above 20 mph for the display to fully update. Also if the vehicle is shut off for more than 8 hours the display will update when the ignition is turned on.

Certain vehicles may have delamination on the electronic control module (ECM) printed circuit board (PCB) causing open circuits. This condition may result in possible no start or stall. Dealers are to replace and reprogram the ECM.

additional information.

Waiting for Update Media Message, Voice Command For Calling Bluetooth Phone Contacts Inoperative, Intermittent Loss of Rear Camera Gridlines, Service Rear Vision System Message, Radio Turns On Unwanted At Startup, and/or Navigation Radio Destination State Defaults To WV, Intermittent Radio/display Resets, Volume Control Inoperative.

and/or Battery Light is Flashing and the procedures to turn the transport mode message on and off.

There is no avalible setting or Body Control Module calibration to turn off the auto door locks.

that have a click, rattle or a squeak nose coming from the dash. Technician will use Service Information to locate the Accessory AC and DC Power Control Module located to the right of the steering column. Remove the power inverter module and apply two sided tape to the module bracket to insulate it from the mount. The instrument panel accessory bezel will also need to be removed. Apply flocking tape to the instrument panel accessory bezel retainers. Also the instrument panel extension will need to be removed. Apply foam tape around connectors located under grill to prevent them from rattling on grill. Apply flocking tape to the instrument panel extension retainers and apply a strip of foam tape along the edge of the grill to isolate the grill from the dash.

these concerns remote keyless entry, passive Entry and Start Inoperative, No Fob detect message on driver information center, service tire pressure system, no audio, touch screen Inoperative, Steering Wheel Controls Inoperative, Service Stabilitrak, rear power windows inoperative, rear wiper inoperative, and or a dead battery. Technician may find Diagnostic Trouble Codes B3101, B144C, C0710, C0544, U1548, U1549, U154A, U0151, U0126, U0415, U0077, U0028 and/or U0029. Technician should inspect the left instrument panel for the wire harness being pinched. Technician will need to repair the wire harness and reroute the wire harness.

P0606 sets.

replacements.

connector for missing weather pack seals that could allow water intrusion into the connector and lead to corrosion on the terminals.

During diagnostics a technician may find water in the SDM connector and is unable to locate a leak path. Dealer is instructed to inspect X150 connector for being broken allowing water into the body harness. Dealer to repair affected connector or harness as needed.

drain test for the OnStar module. When performing battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the OnStar system.

certain channels but XM channel info is displayed. Technician will need to contact XM and deactivate and activate the module.

front shock electrical connector terminals. Technician will need to slightly bend the end of the J-38125-12A release tool. There is a purple Terminal Position Assurance that will align itself in the release position when the release tool is inserted into the release hole. There is a metal locking tab on the terminal that will need to be pushed in before the terminal will pull out of the connector.

Technician should replace the Fuel Rail Pressure sensor not the High Pressure Pump.

unable to rotate ignition key concern. When the concern is present the steering wheel will need to be rotated in either direction to alleviate the pressure between the steering column lock pin and lock plate. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.

ONLY)

This usually occurs after recently filling the DEF tank with the ignition in the on position due to some DEF fill equipment uses pumps that create a high level of temporary aeration of the DEF fluid being dispensed in the tank.

aftermarket bed cap or topper may question where they can wire in the center high mounted stop light for the cap or topper. Provisions for the center high mounted stop light have been provided at the Rear Body Junction Block (X63A) connector X6 terminal 1 for 2014-2015 model years. For vehicle model years 2016-2017 provisions for the center high mounted stop light have been provided at connector X400 terminal 4, circuit 1054.

installed on the vehicle.

amount of dirt or dust which can migrate to the filler cap area.

Technical Assistance (TAC).

loss and/or coolant odor after driving the vehicle. Technician will need to test the cooling system looking for leaks at the outer head bolts. If coolant is found replace the head the concern is present on.

memory position.

normal operations.

and repair procedures.

Only).

verification sheets (CCVS).

Performance Air Intake Kits.

working on a LIN bus.

U**** Byte 71 DTC.

mismatch.

front grille or radiator area.

and repair procedures.

Technical Assistance (TAC).

Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.

causing the parking pawl to engage while driving.

and repair procedures.

On September 1, 2017, GM ordered a stop delivery of certain vehicles in new vehicle inventory. Additional vehicles have been added to this stop delivery order. Until further instructions are received, involved vehicles that are in dealers? possession (new vehicle inventory) must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration purposes or any other dealer use. Instructions for releasing the involved vehicles from this stop delivery will be provided in phases in the near future.

Effective immediately, stop the delivery of certain vehicles in new vehicle inventory. We are investigating an issue relating to the accuracy of the New Car Assessment Program (NCAP) ratings on the Monroney label for these vehicles. Until further instructions are received, involved vehicles that are in dealers? possession (new vehicle inventory) must be held and not delivered to customers, dealer-traded, released to auction, used for demonstration purposes or any other dealer use. We are working to finalize the investigation as quickly as possible. When the investigation is complete, further instructions will be released.

interiors of GM vehicles.

higher CSi scores.

the parking pawl to engage while driving.

endedfor the 8L45 and 8L90 park actuator rod.

Allegation Resolution (PAR) claim.

size pickups and how to correct and repair.

Technical Assistance (TAC).

verification sheets (CCVS).

Package By EchoMaster.

A dealer or customer can access the website listed below for vehicle specific XM offerings and availability.

investigated and to not replace injectors for DTCs.

connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.

back of cab.

causing multiple customer concerns that do not have other diagnostic methods to identify them.

size pickups and how to correct and repair.

has been found low on coolant.

pictures.

part numbers for the labels.

pixelated

gooseneck.

to complete some repairs.

back of cab.

normal operations.

system is healthy.

system is healthy.

cloudy appearance of front differential fluid.

incorrect filter.

back of cab.

higher CSi scores.

Claim (PAC) within the Courtesy Transportation Assistance Program.

as a Product Allegation Resolution (PAR) claim.

size pickups and how to correct and repair.

size pickups and how to correct and repair.

higher CSi scores.

vehicles.

Periods with Hard Start/No Start Condition) to add the 2015-2018 model years.

amount of dirt or dust which can migrate to the filler cap area.

Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.

to Control GM Accessory Remote Start Kits.

times due to the VBM taking over the rear camera option.

(This PI applies to vehicles that have either an original or replacement oil pump).The oil pump control solenoid may be damaged or broke.

(This PI applies to vehicles that have either an original or replacement oil pump).The oil pump control solenoid may be damaged or broke .

Package By EchoMaster.

Technician will need to toggle through all languages then back to the desired language.

Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.

loss and/or coolant odor after driving the vehicle. Technician will need to test the cooling system looking for leaks at the outer head bolts. If coolant is found replace the head the concern is present on.

issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components.

Technician should check the Regular Production Option Code list for (VV4).

Fob or OnStar Mobile Application and where to locate the information for future use.

Hardman Double Bubble Epoxy part number 04001.

for the 8L45 and 8L90 park actuator rod. The dealer technician is advised to call the GM Product Quality Center for further assistance.

If the vehicle is not equipped with Remote Vehicle Start RPO BTV the vehicle will not have Content Theft Deterrent.

A dealer or customer can access the website listed below for vehicle specific XM offerings and availability.

system is healthy.

verification sheets (CCVS).

dealer special tool loan program.

loss and/or coolant odor after driving the vehicle. Technician will need to test the cooling system looking for leaks at the outer head bolts. If coolant is found replace the head the concern is present on.

normal characteristic and no repairs should be completed for this condition.

report.

to Control GM Accessory Remote Start Kits.

Technician should check the Regular Production Option Code list for (VV4).

to Control GM Accessory Remote Start Kits.

If the vehicle is not equipped with Remote Vehicle Start RPO BTV the vehicle will not have Content Theft Deterrent.

lateral driver or passenger seat movement and/or a clunk/click/pop type feeling or noise. Technician will need to install a front seat lateral retainer. Technician will need to remove plastic material from the top side of the guide end of the lateral retainer to enable installation.

loss and/or coolant odor after driving the vehicle. Technician will need to test the cooling system looking for leaks at the outer head bolts. If coolant is found replace the head the concern is present on.

remotelink phone applications

technical Assistance and the use of strategy based diagnostics

report.

services and maintenance on vehicles originating/sold in Canada.

repurchase from the customer, GM depends on the dealership to host and administer the repurchase closing and intake of the returning vehicle.

Pre-Repair Authorization (PRA) (US dealers only).

that may not pass California smog inspection or smog inspection in other states.

E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

Pre-Repair Authorization (PRA) (US dealers only).

information found in the service manual.

E4403, M4404, M4413, E4414, E4423, E4491 or E6961).

identification for warranty transactions (U.S. Only).

services and maintenance on vehicles originating/sold in Canada.

Enthusiasm.

vehicles before sold (prepping) to the customer.

Stability Activation and/or a Service Stability message on the Driver Information Center. Technician may find a Diagnostic Trouble Code C0710. Technician should inspect for vehicles modifications before any in-depth diagnostics are performed.

Stability Activation and/or a Service Stability message on the Driver Information Center. Technician may find a Diagnostic Trouble Code C0710. Technician should inspect for vehicles modifications before any in-depth diagnostics are performed.

and Canada dealers only.

considered warranty and non-warranty.

USB.

programs.

reimbursement procedure.

Enthusiasm.

vehicles before sold (prepping) to the customer.

tools that include consumable parts (U.S. Only).

maintenance on vehicles originating/sold in Canada.

Guidelines.

warranty transaction submission procedures that support the Personal Property Damage process.

and Canada dealers only.

programs.

to GM for payment.

Enthusiasm.

Vehicles and Generating Higher CSi Scores

what is acceptable and not.

procedures.

the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

cranking condition.

Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.

feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.

fuel system caused by a failed part.

excessive soot from the tailpipe.

fuel system caused by a failed part.

excessive soot from the tailpipe.

Filter Keep Driving Until Message is Cleared Message Displayed on DIC, DTC P2463 May Be Set.

Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.

the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

start, no start, rough running, or low fuel pressure. Technician may find Diagnostic Trouble Codes P0087, P0088, P0191 and P128E during the inspection. If during the inspection of the fuel system contamination is found the complete fuel system will need to be cleaned and flushed. After the fuel system is cleaned out test the fuel using the latest version of PIT3173.

Exhaust Fluid Quality Poor ” on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination. Technician should use Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tool J26568 or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.

using the evaporative emission cart smoke machine and ultrasonic leak detectortools.

that may have rattle or ticking noise that is louder inside the vehicle than outside. The noise may also sound like a lifter tick. If the noise is heard best at the fuel line and the sound will be real loud with a stethoscope. The fuel line will need to be replaced.

Exhaust Fluid (DEF) Injector if it was built before provided break point.

the line is reinstalled correctly to avoid a no/low fuel pressure situation.

“Exhaust Fluid Quality Poor” on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination. Technician should use Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tool J26568 or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.

start, no start, rough running, or low fuel pressure. Technician may find Diagnostic Trouble Codes P0087, P0088, P0191 and P128E during the inspection. If during the inspection of the fuel system contamination is found the complete fuel system will need to be cleaned and flushed. After the fuel system is cleaned out test the fuel using the latest version of PIT3173.

“Exhaust Fluid Quality Poor” on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination. Technician should use Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tool J26568 or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.

start, no start, rough running, or low fuel pressure. Technician may find Diagnostic Trouble Codes P0087, P0088, P0191 and P128E during the inspection. If during the inspection of the fuel system contamination is found the complete fuel system will need to be cleaned and flushed. After the fuel system is cleaned out test the fuel using the latest version of PIT3173.

excessive soot from the tailpipe.

debris have entered the exhaust system.

Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles.

excessive soot from the tailpipe.

Machine Interface with Regular Production Option Code U42 or UWG will be current when playing a DVD or Blu-Ray on the Integrated Center Stack display. When the disc is ejected the Diagnostic Trouble Code will be history. If the Diagnostic Trouble Code B127E remains current after ejecting the disc follow Service Information diagnostic procedure instructions for B127E with Regular Production Option Code U42 or UWG.

cranking condition.

coming from the in tank fuel pump in cold weather areas due to possible diesel fuel waxing or gelling issues.

induction or exhaust systems when using a soapy solution or smoke.

contacting the drive shaft.

that may have rattle or ticking noise that is louder inside the vehicle than outside. The noise may also sound like a lifter tick. If the noise is heard best at the fuel line and the sound will be real loud with a stethoscope. The fuel line will need to be replaced.

coming from the in tank fuel pump in cold weather areas due to possible diesel fuel waxing or gelling issues.

feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.

that may have rattle or ticking noise that is louder inside the vehicle than outside. The noise may also sound like a lifter tick. If the noise is heard best at the fuel line and the sound will be real loud with a stethoscope. The fuel line will need to be replaced.

Fluid Quality Poor? on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination. Technician should use Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tool J26568 or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.

Customer hears a rattle or ticking noise that is louder inside the vehicle than outside. A-This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have rattle or ticking noise that is louder inside the vehicle than outside. The noise may also sound like a lifter tick. If the noise is heard best at the fuel line and the sound will be real loud with a stethoscope. The fuel line will need to be replaced.

leak, noisy exhaust, or noise mid-vehicle. Technician will need to check for an unseated pipe to pipe mid-joint connection. Technician will need to install new exhaust band.

the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. The bump clunk issue may be due to fuel movement in the fuel tank when not completely full. The condition is eliminated after completely filling the fuel tank.

Filter Keep Driving Until Message is Cleared Message Displayed on DIC, DTC P2463 May Be Set.

catalog for the correct part number.

harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.

harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.

for metal.

software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.

repaired for the flare and its still noticed.

for metal.

gear due to seeing grease or sealant on certain locations on the gear.

for metal.

and adding the new fluid to a service transmission.

customer concern of reduced acceleration at low speed and/or transmission slipping from a launch, DTC P0751 set.

fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition.

transmissions.

On certain vehicles the electric power steering (EPS) rack gear teeth were not properly heat treated. Dealers will replace the EPS gear.

fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition.

On certain vehicles equipped with a rear vision camera (RPO UVC), 4-wheel disc brakes dual rear wheels (RPO J96), and audio system (RPO IOB), the following conditions may exist. After the vehicle has been placed in reverse for five seconds or when shifting out of reverse, the infotainment display may reset, causing the radio to be unavailable during the reboot and the backup camera to not function. Dealers are to reprogram the radio.

test.

shudder during a light throttle acceleration between 40 and 128 KM/H (25 and 80 MPH) at a steady state.

bump, chuggle, or fishbite sensation when crowding the throttle slightly with the Torque Converter Clutch on while cruising at 35-60 miles per hour. Technician should follow all published Service Information diagnostics if the concern is repaired compare to a like vehicle with the same options.

transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low (4LO) range. Dealers technician's are advised this condition should be deemed a normal characteristic of 4WD low operation.

shudder during a light throttle acceleration between 40 and 128 KM/H (25 and 80 MPH) at a steady state.

shudder during a light throttle acceleration between 40 and 128 KM/H (25 and 80 MPH) at a steady state.

test.

gear due to seeing grease or sealant on certain locations on the gear.

shudder during a light throttle acceleration between 48 and 104 KM/H (30 and 65 MPH) at a steady state.

test.

normal characteristic.

The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This concern may also be present while crusing at highway speeds and then an aggressive increase in throttle.This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to downshift.

normal characteristic.

repaired for the flare and its still noticed.

Certain vehicles may have a fracture in the parking lever support window which, if overloaded, may result in a further fracture of the transmission case. This may cause the park system to be inoperative. Dealers will inspect transmission case for mold number and Julian date and replace suspect transmission.

Certain vehicles may have a condition where a false failure action is being taken when it is not required. This condition can result in the transmission holding the last known safe gear for 6 seconds. A malfunction indicator lamp (MIL) is set when this default happens more than 2 times, and reduced propulsion can happen for all 8-speed transmission applications. Dealers will reprogram the transmission control module (TCM).

after the vehicle has been sitting for a period of time. Technician can update the Transmission Control Module if working on a model year 2007. On all other model years dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.

Certain vehicles may have a fracture in the parking lever support window which, if overloaded, may result in a further fracture of the transmission case. This may cause the park system to be inoperative. Dealers will inspect transmission case for mold number and Julian date and replace suspect transmission.

restriction for the T87A Transmission Control Module.

shudder during a light throttle acceleration between 48 and 104 KM/H (30 and 65 MPH) at a steady state.

gear due to seeing grease or sealant on certain locations on the gear.

the vehicles equipped with rear view camera. The rear view camera brightness can be adjusted on some models while the transmission is in reverse and using the Menu or Select button. To turn off or on the guidelines in the rear view camera, use the radio display Config icon then Display, then the guidelines option.

repaired for the flare and its still noticed.

shudder during a light throttle acceleration between 40 and 128 KM/H (25 and 80 MPH) at a steady state.

If vehicle has regular production option NQF the technician finds that with vehicle in four wheel drive with solid indicator light but the front wheels do not assist in moving vehicle he is to verify when shifting the transfer case to four wheel drive the light is solid If that switch illuminated solid then all operations to achieve four wheel drive were completed successfully. Technician is to inspect pictured item and ensure that the body ring that the synchronizer engages has not separated from theTransfer Case Front Output Shaft Drive Sprocket. If so then replace the transfer case front output drive shaft sprocket as needed. If vehicle has regular production option NQG and the customer indicates that the transfer case was in four wheel drive with that indicator light on solid in the instrument panel cluster but the front wheels were not assisting in vehicle movement technician is to verify the following, shift the transfer case to four wheel drive and ensure that the four wheel drive in the instrument panel cluster is on solid. Technician is to inspect pictured item and ensure that the body ring that the synchronizer engages has not separated from theTransfer Case Front Output Shaft Drive Sprocket.If so then replace the transfer case front output drive shaft sprocket as needed.

When certain vehicles, equipped with base body or chassis (RPO ZW9) and without rear vision camera ready (RPO 5F9) are shifted into reverse, the installed calibration is looking for a camera input that was not part of the requested truck build and ?Service Rear Camera? error message is displayed. Dealers will reprogram the radio with the correct calibration.

rush or flow type noise from the power steering gear. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.

clutch engagement.

Noise from the Speakers Followed by a Reset of the Radio and Clock due to a software issue.

Inspect the body ground strap to insure it is connected in the proper locations and the strap eyelets are tight and do not rotate.

SiriusXM Channels Due to Interference in Some Geographic Locations.

vehicle following the adding transmitters without Service Programming System procedure the procedure will not complete and a message "Remote Learn Pending" will be displayed on the Driver Information Center. In the past to perform the new transmitter procedure only one previously learned transmitter was required but this is no longer the case. Now, two previously learned transmitters are required to be placed into the cup holder and then the new transmitter to be programmed placed in the transmitter pocket. If this new procedure is not followed, the "adding transmitters without Service Programming System" cannot be performed. The technician will be forced to add a transmitter using Service Programming System.

Phone and how it does not work on models equipped with IOA and IOB radios.

radio does not have a global positioning system location but OnStar is able to accurately locate the vehicle. Technician should check the installation of the COAX cables to be router correctly. Technician will gain access to the Radio or Human Machine Interface depending on the vehicle build. Install the EL-50334 test antenna to the Radio HMI and evaluate the operation. If the GPS signal is restored, inspect for incorrect coax routing as described above and if found, reroute the cable so it does not bypass the splitter.

SiriusXM Channels Due to Interference in Some Geographic Locations.

Noise from the Speakers Followed by a Reset of the Radio and Clock due to a software issue.

being: - Yellow - Blurry -Distorted - Image scrolling - Image with NO gridlines - Screen is blue with gridlines - Screen is blue with Service Rear Vision System message

Inspect the body ground strap to insure it is connected in the proper locations and the strap eyelets are tight and do not rotate.

when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.

amplifier part numbers until all the new amplifier numbers are setup correctly for programming.

to bring the level up to the bottom of the fill neck to correct a condition of the coolant surge tank appears low and/or a low coolant message displayed intermittently due to the fill process at the plant cannot purge all of the air from the cooling system and surge tank.

Apple CarPlay.

function properly when diagnosing infotainment complaints, which may lead to mis-diagnosis.

for the USB, to make sure and enter the VIN# to ensure the correct part is being ordered.

condition of audio muting when listening to some Sirius XM channels but if they change channels they will find others that experience normal audio. This could be due to interference from transmitting sources outside of Sirius XM?s frequency range.

Apple Carplay.

the hood fluttering, vibrating or displaying visible motion at highway speeds or over rough road surfaces.

During Bluetooth Phone Calls due to a software concern.

normal characteristic.

Launch After 1124 Key Cycles and Displays Message Advising to Connect a Supported Device via USB Even Though One is Already Connected due to an internal calibration concern.

condition of audio muting when listening to some Sirius XM channels but if they change channels they will find others that experience normal audio. This could be due to interference from transmitting sources outside of Sirius XM?s frequency range.

information.

make sure to select in the "active info pages" menu.

being: - Yellow - Blurry -Distorted - Image scrolling - Image with NO gridlines - Screen is blue with gridlines - Screen is blue with Service Rear Vision System message

being: - Yellow - Blurry -Distorted - Image scrolling - Image with NO gridlines - Screen is blue with gridlines - Screen is blue with Service Rear Vision System message

inoperative for calling Bluetooth phone contacts. Technician will need to Clear All Private Data and repair any phones that were deleted.

Discs .

Phone and how it does not work on models equipped with IOA and IOB radios.

May Hear Their Voice Echo as They Speak to the Person Inside of the Vehicle and that this is due to the volume on the radio being to loud and in need of turning down to correct the condition.

prevent an audible beep will occur when scrolling from page 1 to page 2 of the OnStar menu, which may be interpreted as a hands free OnStar call request.

inoperative for calling Bluetooth phone contacts. Technician will need to Clear All Private Data and re-pair any phones that were deleted.

Inspect the body ground strap to insure it is connected in the proper locations and the strap eyelets are tight and do not rotate.

to bring the level up to the bottom of the fill neck to correct a condition of the coolant surge tank appears low and/or a low coolant message displayed intermittently due to the fill process at the plant cannot purge all of the air from the cooling system and surge tank.

Apple Carplay.

availability of OnStar bluetooth on their vehicle. Technician should be advised that Vehicles with Regular Production Option Code (UPF or UWE) offer Bluetooth through the OnStar system.

the radio ?maximum number of phones are currently paired to the vehicle?. Dealer should advise the customer this is normal operation of the vehicle due to the maximum number of five phones can be paired to a vehicle.

inoperative for calling Bluetooth phone contacts. Technician will need to Clear All Private Data and repair any phones that were deleted.

15-25 minutes of driving, the system may think its blocked and display the ?Side Object Detection System Disabled? message.

condition of infotainment system will not return to media after bluetooth call ends

have the condition of Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion.

coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).

Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.

front side door glass area.

Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.

rearview mirrors on a vehicle not originally equipped with them.

Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.

MIL and DTCs P0420 and P0430 setting.

or ripple appearance in the side outer panel of the cargo box around the perimeter of the wheel house opening. Technician should first access the rear of the inner wheelhouse area through the tail lamp cavity and the front of the wheelhouse from under the vehicle, and coat the inner hem of the wheel house to side outer panel with 3M Rust Fighter I. After allowing the 3M Rust Fighter I to dry then apply several coats of Nox Rust X-121B undercoating.

Technician will need to measure fender wheel-opening heights, front and rear, to quantify vehicle lean. Fender wheel-opening heights are related to, but distinct from, trim height. The front wheel-opening height is known as P height, and the rear wheel-opening height is known as R height. Adjust and heights that are out of specification. After all adjustments are done, perform a front-end alignment and check headlight aim.

coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).

noise in the vehicle from the driver or passenger side. Technician will need to inspect for voids in the body sealer on the left or right side A-pillar. Technician should also inspect for voids in the body sealer at the cowl seam and apply sealer as necessary.

Aftermarket bumpers may also allow water intrusion.

or ripple appearance in the side outer panel of the cargo box around the perimeter of the wheel house opening. Technician should first access the rear of the inner wheelhouse area through the tail lamp cavity and the front of the wheelhouse from under the vehicle, and coat the inner hem of the wheel house to side outer panel with 3M Rust Fighter I. After allowing the 3M Rust Fighter I to dry then apply several coats of Nox Rust X-121B undercoating.

Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.

Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.

front side door glass area.

shipping film.

Speeds

mirror and the reverse tilt

Aftermarket bumpers may also allow water intrusion.

Chromed Aluminum Wheels.

characteristic.

coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).

addressing underbody component corrosion with customers.

rearview mirrors on a vehicle not originally equipped with them.

Technician will need to measure fender wheel-opening heights, front and rear, to quantify vehicle lean. Fender wheel-opening heights are related to, but distinct from, trim height. The front wheel-opening height is known as P height, and the rear wheel-opening height is known as R height. Adjust and heights that are out of specification. After all adjustments are done, perform a front-end alignment and check headlight aim.

Aftermarket bumpers may also allow water intrusion.

coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).

causing the DIC to go blank.

in the bed.

flanges when the repairs are done.

for vehicles that have the condition of Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion (Clean and Resurface Wheel Bead Seat)

Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.

addressing underbody component corrosion with customers.

driver's or passenger's seat back may lean or be turned outward. Technician will need to remove the seat bottom trim cover and reinstall it completely and squarely to the cushion to correct the concern.

Technician should not replace any parts for this concern. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.

Certain vehicles, equipped with 20? polished aluminum wheels (RPO RD5) and Premium Plus package (RPO PDT), may have a condition in which the window pricing labels incorrectly show an $895 price. When the Premium Plus package is ordered, the accompanying 20? polished aluminum wheels are no extra charge. Dealers will provide the customer with a reimbursement check in the amount of $895.

cleaners to use to fix the conditions due to multiple causes.

Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability

Service Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.

that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.

theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".

theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".

abrasive disk on gasket sealing surfaces or reused parts.

to be replaced if the brake pedal moves or applies on its own at a full turn.

Traction control lights/message on, Service Power Steering System, Service Suspension System, and or Loss of communication with EBCM, SWPS, PSCM, and/or SCM. Technician may find Diagnostic Trouble Codes U0077, U0121, U0126, U0131, U0139, U0401, U0415, and/or U0428. Technician should remove the driver and passenger sill plate to gain access to the wire harness. If any open, damaged, or corroded wires should be repaired.

from brakes, uneven front brake pad wear.

from brakes, uneven front brake pad wear.

theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".

to be replaced if the brake pedal moves or applies on its own at a full turn.

on gasket sealing surfaces or reused parts.

C1113 C1114 advising to address any battery issues first before any in depth diagnostics are done.

factory Integrated Trailer Brake Controller Regular Production Option Code (JL1) be installed on their Full-Size Pickup or SUV when the vehicle was not ordered with the option. Dealer should advise the customer it cannot be added to the vehicle.

factory Integrated Trailer Brake Controller Regular Production Option Code (JL1) be installed on their Full-Size Pickup or SUV when the vehicle was not ordered with the option. Dealer should advise the customer it cannot be added to the vehicle.

Traction control lights/message on, Service Power Steering System, Service Suspension System, and or Loss of communication with EBCM, SWPS, PSCM, and/or SCM. Technician may find Diagnostic Trouble Codes U0077, U0121, U0126, U0131, U0139, U0401, U0415, and/or U0428. Technician should remove the driver and passenger sill plate to gain access to the wire harness. If any open, damaged, or corroded wires should be repaired.

brake light intermittently comes on.

vehicles that may have an intermittent "Check Trailer Wiring" or "Service Trailer Brake" message on the Driver Information Center. Technician will inspect and clean the ground wire (normally white wire) connection on the trailer side of the 7-pin connector. Inspect that the wires inside the trailer side connector are clean and securely fastened. If the vehicle’s 7-way connector socket terminals are deformed or have excessive wear, it will be necessary to replace the truck side connector with part number 23404450.

to be replaced if the brake pedal moves or applies on its own at a full turn.

Certain vehicles may have a condition in which the left and right front brake caliper assemblies are suspect to a torque value below the specification of 100 Nm. If not corrected, the condition has the potential to degrade vehicle stopping distance during normal operation. Inspect, and if necessary, torque the left and right front brake caliper assembly bolts to 100 Nm.

under hard acceleration at higher speeds, the traction control light will flash. Or, they may come in for ABS or general handling/braking concerns.

theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".

that may have a "Check Trailer Wiring" or "Service Trailer Brake System” message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.

that may have a "Check Trailer Wiring" or "Service Trailer Brake System” message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.

connection not recognized or ?Check Trailer wiring? or ?Service Trailer Brake? message. Technician may find Diagnostic Trouble Codes C1112, C1113, C1114, C111B, U1556, and/or U1505. Technician will need to inspect the Trailer Brake Power Module connector for corroded terminals and replace as necessary.

theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".

Issues / Memory And Power Seats / Power Windows Inoperative / Heated Cooled Seats / Trailering / ABS MIL / Stability Message / etc. caused by certain ground bolts not havingproper hardening. A ground bolt without the proper hardening may not achieve torque causing a poor ground connection. Dealership are to inspect the ground bolt for proper torque and replace if necessary.

Traction control lights/message on, Service Power Steering System, Service Suspension System, and or Loss of communication with EBCM, SWPS, PSCM, and/or SCM. Technician may find Diagnostic Trouble Codes U0077, U0121, U0126, U0131, U0139, U0401, U0415, and/or U0428. Technician should remove the driver and passenger sill plate to gain access to the wire harness. If any open, damaged, or corroded wires should be repaired.

repair the vehicles that may have unwanted or phantom phone calls. Technician will need to determine what type of call the customer is having that is unwanted. The vehicle may receive an incoming call just like any other phone. Typically the customer will hear the phone ringing in the vehicle. This scenario also includes incoming Bluetooth calls. One type of unwanted call can be made if the key pad is faulty the OnStar system will try to make a blue button call for shorted voltage in the circuits. The OnStar module could have an internal fault and produce a ″Phone Unavailable″ audio message also it may have a Diagnostic Trouble Code U1500 or B1000. Refer to diagnostics for the Diagnostic Trouble Code making sure to follow any applicable Bulletins or Preliminary Information sheets. A “Ready” or “OnStar ready” audio message heard while driving. In some cases it has been found that the customer is inadvertently pressing the ″push to talk″ button on the steering wheel controls. On rare occasions, other issues in the steering column or Steering Wheel Control system may induce this concern.

to be replaced if the brake pedal moves or applies on its own at a full turn.

that may have a "Check Trailer Wiring" or "Service Trailer Brake System" message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.

vehicles that may have an intermittent "Check Trailer Wiring" or "Service Trailer Brake" message on the Driver Information Center. Technician will inspect and clean the ground wire (normally white wire) connection on the trailer side of the 7-pin connector. Inspect that the wires inside the trailer side connector are clean and securely fastened. If the vehicle?s 7-way connector socket terminals are deformed or have excessive wear, it will be necessary to replace the truck side connector with part number 23404450.

Pads to correct a conditon of Accessory Tri-Fold Tonneau Cover Prevents Endgate/Tailgate From Closing

and strut due to fluid leak.

Guidelines.

Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.

will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49). These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling daytime running lamps (DRL's) or auto headlamps.

Guidelines.

Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.

will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49). These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling daytime running lamps (DRL's) or auto headlamps.

covered under the standard vehicle warranty and dealer installed accessories will be covered for a full year (12 months).

Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.

Please discard Corporate Bulletin Number 03-06-04-071I

that is slow to update while driving when the clock auto set feature enabled. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.

to be inaccurate relative to a known distance traveled. Technician should obtain a hand-held GPS unit to test the odometer. If a hand held GPS unit is not available, the only other option is to verify the miles traveled using a surveyor's wheel or a dynamometer.

For many 2008 and prior model year GM vehicles, the programming is performed using the Tech 2 and the activation is initiated by a Service Programming System. For the 2010 and UP model year vehicles, the OnStar set-up procedure and OnStar Activation request have been combined into a single programming event called OnStar Set-up and Activation in Service Programming System.

what should be considered warranty replacement and not

For many 2008 and prior model year GM vehicles, the programming is performed using the Tech 2 and the activation is initiated by a Service Programming System. For the 2010 and UP model year vehicles, the OnStar set-up procedure and OnStar Activation request have been combined into a single programming event called OnStar Set-up and Activation in Service Programming System.

correct the noise.

Lift and Lower tailgate opens too quickly. Technician will ensure nothing was added to the tailgate. If the tailgate opens within approximately 2-6 seconds, no repairs should be made. Technician should inspect the right tailgate bushing if the tailgate opens too quickly.

vehicles with various handling, vehicle dynamics concerns, noises from the suspension or underbody, or issues related to damaged suspension components. Before any in-depth diagnostics are performed, be aware that various issues could occur if the vehicle has been modified and inform the customer the conditions noted may not be covered under warranty. Technician will inspect for installed aftermarket suspension components. Also inspect for improperly adjusted torsion bars.

vehicles with various handling, vehicle dynamics concerns, noises from the suspension or underbody, or issues related to damaged suspension components. Before any in-depth diagnostics are performed, be aware that various issues could occur if the vehicle has been modified and inform the customer the conditions noted may not be covered under warranty. Technician will inspect for installed aftermarket suspension components. Also inspect for improperly adjusted torsion bars.

concern of on a clunking noise originating from the front of the vehicle that is more predominant during turns or traveling over bumps.

tonneau latch to replace an original quarter turn latch that has broken.

Certain vehicles may have a condition in which the rear wheel hub nut could become loose due to the rear wheel hub nut retainer not being formed properly. If the hub nut loosens, the StabiliTrak message may be displayed in the driver information center (DIC) and the traction control indicator may illuminate, axle fluid may leak from the axle seal area, and rear axle housing damage could occur. Replace the hub nut retainer. Inspect the axle tube threads for damage and repair if necessary.

repair vehicles with a rattle, squeak, clunk, thump, or bump. If published Service Information diagnostics do not lead to a repair for the concern. Technician should inspect the opposite side shock/strut for the cause of the concern.

noise from the metals making contact.

click, pop, and or crack type noise from the front suspension or front frame area while making tight turns. Technician will need to loosen and then re-torque the four front frame cross member nuts and bolts.

repair vehicles with a rattle, squeak, clunk, thump, or bump. If published Service Information diagnostics do not lead to a repair for the concern. Technician should inspect the opposite side shock/strut for the cause of the concern.

click, pop, and or crack type noise from the front suspension or front frame area while making tight turns. Technician will need to loosen and then re-torque the four front frame cross member nuts and bolts.

infotainment display and a blank HVAC pop-up selecting HVAC Control settings.

Center when the interior of the vehicle is hot from a sun load or extended heater operation. The Driver Information Center is designed to dim with high temperature exposure. This is done to protect the Driver Information Center from damage.

concerns with custom upholstery, accessory seat heaters or other comfort enhancing devices.

cold weather climates and testing those batteries.

cold weather climates and testing those batteries.

service.

Center when the interior of the vehicle is hot from a sun load or extended heater operation. The Driver Information Center is designed to dim with high temperature exposure. This is done to protect the Driver Information Center from damage.

Heater-Vent-Air Conditioning air flow from the passenger side far right dash vent when compared to the other dash vents. Technician will need to remove the Heater-Vent-Air Conditioning air distributor duct. Technician can now cut out the portion of the deflector to increase air flow.

Heater-Vent-Air Conditioning controls the Heater-Vent-Air Conditioning display is blank and/or various selections missing from radio Settings menu intermittently. Technicians will find the Heater-Vent-Air Conditioning does change but the lower radio display is blank. Technician will need to update the radio using Service Programming System with the latest software.

Heater-Vent-Air Conditioning controls the Heater-Vent-Air Conditioning display is blank and/or various selections missing from radio Settings menu intermittently. Technicians will find the Heater-Vent-Air Conditioning does change but the lower radio display is blank. Technician will need to update the radio using Service Programming System with the latest software.

Center when the interior of the vehicle is hot from a sun load or extended heater operation. The Driver Information Center is designed to dim with high temperature exposure. This is done to protect the Driver Information Center from damage.

replace it via the website provided.

when installing the accessory 22" 6-Spoke Split Chrome Wheels Regular Production Option Code (SEU) or during any service requiring wheel removal.

when installing the accessory Accessory 22" Wheels Regular Production Option Code (SES, SEU, SEY, OR SEZ) or production 22" wheels Regular Production Option Code (RPT or SMI) also during any service requiring wheel removal.

experience a steering hose leak.

Steering" message on the Driver Information Center along with a warning chime/alert. Dealer should be advised the purpose of the message is to alert the driver that the Lane Keep Assist system has not detected active steering input from the driver (hands off the steering wheel).

functionality of Lane Keep Assist.Starting with2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.

or fluid leak concern that is caused during extremely low temperatures.

reservoir.

vehicles that may have intermittent and hard to duplicate Rear Camera blank, distorted, or fuzzy. Also no radio, OnStar, or speech audio and the volume is unable to be adjusted from the integrated center stack or the steering wheel controls. The driver information center will show “No Audio” in Audio mode. Technician will need to inspect X275 and X225 for bent terminals, terminals backing out of the connector, or terminals contacting another terminal behind each side of the connector and repair as necessary.

functionality of Lane Keep Assist.Starting with2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.

Steering" message on the Driver Information Center along with a warning chime/alert. Dealer should be advised the purpose of the message is to alert the driver that the Lane Keep Assist system has not detected active steering input from the driver (hands off the steering wheel).

Steering" message on the Driver Information Center along with a warning chime/alert. Dealer should be advised the purpose of the message is to alert the driver that the Lane Keep Assist system has not detected active steering input from the driver (hands off the steering wheel).

Starting with 2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded

may not have had the adjuster stops transferred and are missing on the replacement part. The front passenger seat may be in a position beyond the occupant design travel range.Dealers are to inspect the front passenger seat tracks for the presence of both adjuster stops and install missing adjuster stops if necessary.

Certain vehicles owner manuals may be missing written instructions for using tether anchorages and child restraint anchorage systems in the vehicle. Print and insert revised owner manual pages included in this bulletin.

In certain vehicles, if a driver repeatedly sits on the seat belt cable cover located at the base of the driver?s seat when entering the vehicle, it may cause the seat belt pretensioner to bend sharply over the seat side shield. If this continues to occur over an extended period of time, which is very rare, the seat belt pretensioner cable may fatigue and eventually separate, which could reduce the effectiveness of the vehicle?s seat belts. Before any damage occurs to the pretensioner cable itself, signs of wear will be visible on the pretensioner cable cover where it has been repeatedly bent over the seat side shield. Dealers are to replace the pretensioner and side shield for all customers that experience a broken pretensioner cable or come to a dealership with excessive wear on the cable sleeve. The repairs will be made at no charge to the customer.

The driver?s and front passenger?s seat belt retractors in certain vehicles may have been built with different torsion bars than were used in testing the vehicles for the Government 5-Star Safety Ratings listed on the window sticker. While these vehicles comply with all applicable government safety standards, this condition may affect the Government 5-Star Safety Ratings listed on the window sticker. Dealers will replace the driver and front passenger-side seat belt retractor assemblies with assemblies containing the correct torsion bar if the customer elects to have this condition repaired.

The driver?s and front passenger?s seat belt retractors in certain vehicles may have been built with different torsion bars than were used in testing the vehicles for the Government 5-Star Safety Ratings listed on the window sticker. While these vehicles comply with all applicable government safety standards, this condition may affect the Government 5-Star Safety Ratings listed on the window sticker. Dealers will replace the driver and front passenger-side seat belt retractor assemblies with assemblies containing the correct torsion bar if the customer elects to have this condition repaired.

Certain vehicles, equipped with power front passenger seat adjuster that was previously replaced, may have a condition in which the front passenger seat can be adjusted to a position beyond the occupant design travel range. Dealers will inspect front passenger seat tracks and, as necessary, install the seat stop(s).

is considered a fluid leak, and what is considered seepage.

means of using aftermarket mods.

Update GDS 2 to the latest Diagnostic package 2017.3.1 release 04/03/17. Then go back and do the learn.