2016 Chevrolet Silverado 2500 TSBs

internal engine damage.

repair attempts that are being performed on customers 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.

caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston.

noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

GDS 2.

issue.

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.

consumption.

Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

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

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

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.

tech did not properly prepare the engine block from dirt and debris in bolt holes or if found that the block was damaged by the tech.

service or aftermarket calibrations.

GDS 2.

consumption.

possibilities of what may happen using the incorrect filter.

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.

GM has determined that wheel refinishing under warranty will no longer be performed.

conductive finish.

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.

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.

and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

and improve fuel economy.

service or aftermarket calibrations.

the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.

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.

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.

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

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.

Dealers Only).

Recommendations.

consumption.

Dealers Only).

possibilities of what may happen using the incorrect filter.

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

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

tech didn't properly prepare the engine block from dirt and debris in bolt holes or if found that the block was damaged by the tech.

service or aftermarket calibrations.

noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

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.

GDS 2.

consumption.

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

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

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

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.

issue.

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.

issue.

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

service or aftermarket calibrations.

internal engine damage.

Dealers Only).

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.

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

may have no Reverse and no 2nd gear.

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.

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

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.

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

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.

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.

Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.

and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole authorized provider of a certification confirmation letter which helps our customers identify if their vehicles meets the required USA regulatory standards necessary for importation into the USA.

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

GDS 2.

Identification.

consumption.

service or aftermarket calibrations.

internal engine damage.

engine is started while diagnosing for noise from the engine or transmission.

Recommendations.

and improve fuel economy.

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

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

Dealers Only).

noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

Turbochargers Returned to Warranty Part Center.

Dealers Only).

hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in cold temperatures.

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

service or aftermarket calibrations.

failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.

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.

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.

and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

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

GM has established a new process for the way that refinishing under GM Warranty will be handled (U.S. ONLY).

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.

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.

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.

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

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

key option Regular Production Option Code 6E2 or 6E8. Technician will need to check the Regular Production Option Code for 6E2 or 6E8. Technician will need to order the correct key part number per the Regular Production Option Code. Then the technician will need re-code the lock cylinders to match the Regular Production Option Code. Also replace the Body Control Module and normal Service Programming System to the Body Control Module will turn the vehicle to a common key.

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

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.

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.

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

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.

cylinders after the camshaft was replaced.The camshaft may have been boxed incorrectly

Engine Coolant Leaks into Combustion Chamber

Dealers Only).

and improve fuel economy.

Dealers Only).

and improve fuel economy.

noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

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.

internal engine damage.

occurrence.

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.

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

Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.

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

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.

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

passage seal or incorrect1-2-7-8-R clutch fluid passage seal being install for a no movement concern after valve body replacement on the 8L45 or 8L90 transmissions.

eliminate coolant smell and/or a slight leak at the radiator.

personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

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

GDS 2.

engine oil consumption.

Dealers Only).

Drive concern.

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.

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.

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

GDS 2.

engine oil consumption.

Dealers Only).

Drive concern.

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.

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.

Identification.

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.

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.

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. Dealers are to replace the vacuum pump and vacuum pump belt. The repairs will be made at no charge to the customer.

hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated.

service or aftermarket calibrations.

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.

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

found the cause of the customers concern.

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

which causes an offset in the temperature sensor in the diesel-emission-reduction fluid(DEF) tank reservoir or causes the DEF heater performance to degrade. If this condition occurs, the Malfunction IndicatorLight (Check Engine Light) will illuminate, the ?Service ExhaustFluid System? or ?Service Emission System? message will be displayed, and a diagnostic trouble code related to the conditionwill be set. Dealers are to replace the DEF tank reservoir as necessary. The repairs will be made at no charge to the customer.

failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.

Dealers Only).

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.

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.

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

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

connection to the transmission oil temperature sensor. If this condition occurs, rough transmission shifts or hesitation during acceleration may occur. Additionally, the Malfunction Indicator Light (Check Engine Light) would illuminate and a diagnostic trouble code related to the temperature sensor would set. Dealers are to replace the transmission wiring harness as necessary. The repairs will be made at no charge to the customer.

If this occurs, the control system will inhibit diesel particulate filter regeneration and selective catalyst reductant (Diesel Exhaust Fluid) dosing. The Service Exhaust Fluid System or Service Emission System message will be displayed, the Malfunction Indicator Light (Check Engine Light) will illuminate, and a diagnostic trouble code related to the position 2 exhaust gas temperature sensor will be set. This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to replace the position 2 exhaust gas temperature sensor as necessary. The repairs will be made at no charge to the customer.

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

of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole authorized provider of a certification confirmation letter which helps our customers identify if their vehicles meets the required USA regulatory standards necessary for importation into the USA.

have fishbite, chuggle, misfire,AFM disturbances or torque converter shudder/vibrationconcerns. Technician are advised to use PICO software to determine root cause of the concern. If torque converter shudder is confirmed technicians arereferred toTorque Converter Diagnosis in SI.

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.

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.

have fishbite, chuggle, misfire,AFM disturbances or torque converter shudder/vibrationconcerns. Technician are advised to use PICO software to determine root cause of the concern. If torque converter shudder is confirmed technicians arereferred toTorque Converter Diagnosis in SI.

8L90 transmission the vehicle will not move the valve body may be missing a plug and retainer bolt. Technician's are instructed to obtain and installa plug and retainer bolt kit from the GM Warranty Parts Center to address this concern.

of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole authorized provider of a certification confirmation letter which helps our customers identify if their vehicles meets the required USA regulatory standards necessary for importation into the USA.

Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.

Drive concern.

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

or the vehicle has sat for a few hours.

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

key option Regular Production Option Code 6E2 or 6E8. Technician will need to check the Regular Production Option Code for 6E2 or 6E8. Technician will need to order the correct key part number per the Regular Production Option Code. Then the technician will need re-code the lock cylinders to match the Regular Production Option Code. Also replace the Body Control Module and normal Service Programming System to the Body Control Module will turn the vehicle to a common key.

have fishbite, chuggle, misfire,AFM disturbances or torque converter shudder/vibrationconcerns. Technician are advised to use PICO software to determine root cause of the concern. If torque converter shudder is confirmed technicians arereferred toTorque Converter Diagnosis in SI.

Dealers Only).

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

or the vehicle has sat for a few hours.

Trailer Brake message in the Driver Information Center. Also the vehicle will have a Diagnostic Trouble Code U0415 set. Technician will fill the master cylinder brake fluid reservoir to the maximum level.

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

The customer communication requested return of unsold inventory to inspect the software. The software may be too sensitive to the position of a locating magnet in the assembly causing the activation of the pinch point threshold prematurely. The window will stay open when it should have closed.

The customer communication requested return of unsold inventory to inspect the software. The software may be too sensitive to the position of a locating magnet in the assembly causing the activation of the pinch point threshold prematurely. The window will stay open when it should have closed.

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.

customer concerns related to wheel alignment.

has been sheared away to correct a crank/No Start condition.

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.

have fishbite, chuggle, misfire,AFM disturbances or torque converter shudder/vibrationconcerns. Technician are advised to use PICO software to determine root cause of the concern. If torque converter shudder is confirmed technicians arereferred toTorque Converter Diagnosis in SI.

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.

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

diesel engine (LML/LGH) may have a condition which causes an offset in the temperature sensor in the diesel-emission-reduction fluid (DEF) tank reservoir or causes the DEF heater performance to degrade. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate, the "Service Exhaust Fluid System" or "Service Emission System" message will be displayed, and a diagnostic trouble code related to the condition will be set. Dealers are to replace the DEF tank reservoir as necessary. The repairs will be made at no charge to the customer.

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.

condition which causes an offset in the temperature sensor in the diesel-emission-reduction fluid (DEF) tank reservoir or causes the DEF heater performance to degrade. If this condition occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate, the ?Service Exhaust Fluid System? or ?Service Emission System? message will be displayed, and a diagnostic trouble code related to the condition will be set. Dealers are to replace the DEF tank reservoir as necessary. The repairs will be made at no charge to the customer.

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.

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.

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.

driving.

engine oil consumption.

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

Certain Vehicles may have a condition where customers may experience increased brake pedal effort, hardbrake pedal, and/or potentially increased stopping distance. The condition is more prevalent at low speed when softly applyingthe brakes. The engine mounted mechanical vacuum pump outputmay decrease over time decreasing the amount of vacuum/power brake assist. Failure to follow recommended oil change intervalscould contribute to this condition. The Driver?s Information Center, (DIC) ?Service brake assist? alert will activate 2-5minutes 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 additionalpedal force. Please be aware that even if the vehicle exhibits this condition, it meets all federal motor vehicle safety standards forbrake performance. Dealers are to replace the vacuum pump and vacuum pump belt. The repairs will be made at no charge to the customer.

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.

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

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.

have fishbite, chuggle, misfire,AFM disturbances or torque converter shudder/vibrationconcerns. Technician are advised to use PICO software to determine root cause of the concern. If torque converter shudder is confirmed technicians arereferred toTorque Converter Diagnosis in SI.

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.

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.

GDS 2.

severe internal engine damage.

replaced and is still within warranty.

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.

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

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

service or aftermarket calibrations.

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.

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.

replaced and is still within warranty.

replaced and is still within warranty.

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

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

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.

General Motors vehicles can be accessed via the web at http://www.gmstc.com. orhttp://www.nfpa.org/

or the vehicle has sat for a few hours.

Drive concern.

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

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.

intermittent pop noise from the speakers followed by a reset of the radio and clock. Technician will need to check for Diagnostic Trouble Codes and also check the battery for proper cable connections. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

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. If the Firmware Over-the-Air version on the scan tool equals 6708 the technician will need to contact General Motors Technical Assistance Center for further assistance. If the Firmware Over-the-Air version on the scan tool is lower than 6708 Dealer can order the part thought the Instrument Sales and Service website process.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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

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.

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.

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

some newer General Motors infotainment systems. Pair the iPhone to the system then enter the Bluetooth settings menu, select the ?i? icon next to the vehicle name in the device and enable show notifications. The text messaging feature will be available on the next ignition cycle. However with iPhones text messages cannot be responded to when using the infotainment system, they can only be received. For android devices pair the phone to the system during the pairing process the phone will ask you to allow the vehicle to access the device contacts. A second question will pop up on the device asking to allow the vehicle to access the message access profile. Both have to be allowed for the text messaging feature to work.

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.

illuminate due to trouble codesP0601-P0604, P0606, P062B, P062F, P0630, P16F3, or P262B . The dealer is to inspect the engine control module's electrical connections and for proper powers and grounds. Dealer instructed to replace the Engine Control Module, if no other issues found.

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."

This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.

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

Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.

turbocharger outlet pipe may have a bad weld. Smoke may be noticed from under the hood at a stop or while driving. The customer may also smell exhaust gas. Dealers are to replace the exhaust turbocharger outlet pipe. The repairs will be made at no charge to the customer.

engagement into drive, delayed, no engagement into reverse, and or a range inhibit. Technician may find Diagnostic Trouble Codes P0701, P0731, P0732, P0733, P0734, P0736, P0751, P0756, P0761, P0776, P0843, P0848, P0873, P0877, P0894 or P2723. Technician should follow published Service Information diagnostics for Diagnostic Trouble Code P0701 first. Technician will also ensure the fluid level is at the top of the hot band when the transmission fluid temperature is 175° Fahrenheit. Diagnostic Trouble Codes P0701, P0731, P0732, P0733, P0734, P0736, P0751, P0756, P0761, P0776, P0843, P0848, P0873, P0877, P0894 or P2723 can set by the following fluid service/filter change, transmission service involving removing the pan, low fluid level caused by leaks, or after long periods of storage. If the fluid level has been properly checked using the HOT check procedure listed in Service Information document 2408059 and any of the Diagnostic Trouble Codes reset during a cold start inspect the internal suction filter for possible cracks. If no other concerns are found inspect for a stuck lube regulator valve in the pump cover due to debris.

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

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.

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.

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

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.

General Motors has decided to conduct a Voluntary Emission Recall on certain vehicles equipped with a 6.6L diesel (LML) engine and dual fuel tanks (N2N). Under certain driving conditions, fuel may not be transferred from the rear fuel tank to the front fuel tank at a sufficient rate. If this occurs, the diagnostic trouble code (DTC) P2636 will set, the malfunction indicator lamp will illuminate, the fuel gauge will display empty, and the transfer pump will be disabled until serviced. If the vehicle continues to be driven, it will run out of fuel in the front tank and stall. Dealers are to replace fuel line connections to allow the rear tank, in addition to the front tank, to directly supply fuel to the engine. The engine control module (ECM) will also be reprogrammed with calibrations necessary to support this new connection.

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

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

programs.

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

E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

Only).

programs.

before being sold (prepping) to the customer.

programs.

Only).

before being sold (prepping) to the customer.

shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.

Only).

programs.

(WPC) Parts Return Program.

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

and Canada Dealers Only).

submit a Pre-Repair Authorization (PRA).

Dealer Special Tool Loan Program process.

operation.

replacements.

Dealers Only).

E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

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

services and maintenance on vehicles originating/sold in Canada.

replacements.

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

Only).

before being sold (prepping) to the customer.

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

a fluid leak, and what is considered fluid seepage.

Assistance Center (TAC).

Only).

programs.

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.

shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.

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

Vibration Analysis-Road testing procedure when diagnosing vibration concerns.

Vehicle from Canada to the United States.

(WPC) Parts Return Program.

Only).

and Canada Dealers Only).

Only).

Only).

submit a Pre-Repair Authorization (PRA).

Vehicle from Canada to the United States.

submit a Pre-Repair Authorization (PRA).

warped or misshapen.

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

Dealer Special Tool Loan Program process.

Assistance Center (TAC).

Dealers Only).

Only).

Only).

Only).

Dealers Only).

vehicles before being sold (prepping) to the customer.

Spin-On Oil Filters.

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.

to GM for payment.

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

operation.

Only).

Dealers Only).

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

(WPC) Parts Return Program.

Only).

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

and Canada.

Spin-On Oil Filters.

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

Only).

submit a Pre-Repair Authorization (PRA).

Only).

submit a Pre-Repair Authorization (PRA).

Only).

replacements.

warped or misshapen.

Spin-On Oil Filters.

(WPC) Parts Return Program Information.

Technical Assistance (TAC).

vehicles before being sold (prepping) to the customer.

Dealers Only).

Spin-On Oil Filters.

independent causes (GM Canada Dealers Only).

replacements.

replacements.

Spin-On Oil Filters.

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.

Vibration Analysis-Road testing procedure, when diagnosing vibration concerns.

grille or radiator area.

operation.

Only).

programs.

programs.

Pre-Repair Authorization (PRA).

Pre-Repair Authorization (PRA).

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.

Dealers Only).

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

Only).

vehicles before sold (prepping) to the customer.

Pre-Repair Authorization (PRA).

warped or misshapen.

Only).

Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode.

Pre-Repair Authorization (PRA).

Only).

Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode.

Pre-Repair Authorization (PRA).

Only).

(CCND) Labor Operation Numbers.

information found in the service manual.

Only).

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

(WPC) Parts Return Program Information.

information found in the service manual.

(WPC) Parts Return Program Information.

Only).

information found in the service manual.

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.

(WPC) Parts Return Program Information.

programs.

(CCND) Labor Operation Numbers.

Only).

Only).

services and maintenance on vehicles originating/sold in Canada.

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.

feel or clunk noise at a stop or on launch. Dealer should communicate to the customer this condition is a normal operating characteristic

50 terminal test probe, replacement terminals, and terminated leads.

50 terminal test probe, replacement terminals, and terminated leads.

50 terminal test probe, replacement terminals, and terminated leads.

system and replace the parts that may be contaminated due to oil in system.

system and replace the parts that may be contaminated due to oil in system.

and repair procedures.

technical assistance case using the dealer case management tool.

working on a LIN bus.

U**** Byte 71 DTC.

Allegation Resolution (PAR) claim.

Allegation Resolution (PAR) claim.

working on a LIN bus.

offered through GM.

working on a LIN bus.

U**** Byte 71 DTC.

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

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

Allegation Resolution (PAR) claim.

offered through GM.

and repair procedures.

on 2015-2022 model year vehicles in the United States.

working on a LIN bus.

and repair procedures.

and repair procedures.

offered through GM.

Allegation Resolution (PAR) claim.

Only)

the differences between what is considered a fluid leak and what is considered seepage. Improper diagnosis may lead to unnecessary component replacement. Use the following information to determine if the condition is normal acceptable seepage or a defective component

do not return.

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

performance while under heavy specific driving maneuvers.

Allegation Resolution (PAR) claim.

Icon Selected on Menu.

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.

working on a LIN bus.

notification advising of a starting syetem issue with their veihcle. Dealer advised to inspect for a legitimate issue, if one found, diagnose accordingly.

higher CSi scores.

offered through GM.

interiors of GM vehicles.

causing the parking pawl to engage while driving.

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

interiors of GM vehicles.

Dealers Only).

front grille or radiator 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).

The customer communication requested return of unsold inventory to inspect for incorrect taper of the spline. Incorrect taper of the spline prevents it from installing with the mating component, preventing installation of the part, and would therefore have no impact on the end user besides time required to complete installation.

providing additional information on the AFM and DFM systems

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.

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.

click type noise while driving.

size pickups and how to correct and repair.

and repair procedures.

Technical Assistance (TAC).

verification sheets (CCVS).

Package By EchoMaster.

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.

intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.

for certain repairs, such as Wiring Harness Repairs.

warranty replacements.

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.

repairing wiring harnesses.

(U.S).

warranty replacements.

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.

It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

warranty replacements.

warranty replacements.

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.

repairing wiring harnesses.

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.

warranty replacements.

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.

warranty replacements.

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.

condition of MIL Illuminated with Multiple Fuel Trim and/or Oxygen Sensor Codes Set.

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.

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.

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

connector to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated - DTC P0333 Set.

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.

replacements.

Loss of Steering Assist due to a software abnormality.

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.

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.

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

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.

replacements.

IPC reprogramming and setup using the service programming system (SPS). 2. Odometer setup at the electronic service center (ESC) when using an exchange IPC/DIC. 3. Tech 2 The Tech 2 is used to set up a replacement BCM, which includes loading the odometer value that is displayed and stored in the IPC. A replacement IPC will display the previously stored vehicle odometer value, communicated from the BCM, after cycling the ignition or driving the vehicle. *The odometer programming is integrated as part of the BCM programming procedure. It is not a stand-alone event.

technicians may notice the TCM may fail during the reprogramming event and become unresponsive to the Service Programming System (SPS), unresponsive to the GDS2 tool. This bulletin addresses corrective actions to attempt to recover the module before declaring the TCM as a bad part and replacing. During reprogramming, an interruption can cause the module to lock up. A module reset may recover the TCM

temperatures of 15F (−9C) or less, customers may comment on an Exhaust Fluid Range message displaying on the DIC even though the DEF fluid has been filled. When the DEF is frozen, the level sensor cannot determine the fluid level in the tank. If this occurs the logic of the PCM will assume a default fluid level. The logic will use the calculated range based on DEF dosing history and the assumed fluid level. If there is a high learned dosing rate and the fluid has not thawed to where the pins of the level sensor can function, there is a possibility the Exhaust Fluid Range message can set with the range from approximately 1609 km (1000 mi) to less than 482 km (300 mi), even though the tank is known to have fluid or be full. This is an operating characteristic of the system. However to increase or eliminate the range message, once the range drops below 482 km (300 mi), the DEF tank should be refilled. This should allow refill detection to occur and turn off the range indicator. The operator must be sure not to overfill the DEF tank using the instructions provided in this bulletin or in the owners manual. When in frozen tank status, refill detections are not allowed until the warning strategy reaches the point at which the distance remaining is less than 482 km (300 mi). The refill detection is dependent on the DEF thawing enough that the level sensor pins can be read. A fully frozen tank can take almost an hour to detect a refill, after the vehicle is started. This condition should not be confused with the situation described in PIP4864: Low Or Speed Limited Diesel Exhaust Fluid Message (DEF) Will Not Reset.

The new electrical architecture for the Silverado and Sierra has made swapping mirrors a more involved procedure than with previous models. The recommendation has been divided into three upgrades, depending on which mirrors the truck was built with (RPO DE2, DL8 or DL3). Please follow the correct RPO group below, because not all camper mirrors can be installed on all trucks. After selecting the correct RPO mirror the truck was built with, this PI will aid in determining which camper mirrors can be installed.

battery cold cranking amperage (CCA) ratings and type are critical for proper test results when using the EL-50313. Access to the battery specification label, which contains the OEM part number and CCA rating and type, may be difficult without component removal. Refer to the table below for the original equipment ratings and part numbers used to set up a proper battery test. There has been some confusion as to the correct ACDelco battery warranty replacement. Refer to the table below for the correct battery warranty replacement. The correct ACDelco battery warranty replacement in the catalog is designated by the "Original Equipment Replacement" note in the description field.

keys, fobs, and key tags together on a single crimped loop or a cable. This practice may result in unintended key rotation, and should be discontinued immediately. The information in this bulletin details the proper configurations for the ignition key, fob, key rings and key tags and applying a QR code sticker or barcode sticker to a key fob.

Surging and Stalling Condition Some customers may comment that the Malfunction Indicator Light (MIL) is illuminated. Some customers may also comment on one or more of the following symptoms: Hesitation Surging Stalling Note: In ambient temperatures 100 F (37.7 C) degrees or higher, DTCs P2635 and/or P018B may set. The Technician may find one or more of the following DTCs set: P2635 P018B Cause This condition may be caused by a vapor buildup in fuel feed line. Correction If the conditions stated above are met, replace the fuel pump module with an updated version

The new electrical architecture for the Silverado and Sierra has made swapping mirrors a more involved procedure than with previous models. The recommendation has been divided into three upgrades, depending on which mirrors the truck was built with (RPO DE2, DL8 or DL3). Please follow the correct RPO group below, because not all camper mirrors can be installed on all trucks. After selecting the correct RPO mirror the truck was built with, this PI will aid in determining which camper mirrors can be installed.

keys, fobs, and key tags together on a single crimped loop or a cable. This practice may result in unintended key rotation, and should be discontinued immediately. The information in this bulletin details the proper configurations for the ignition key, fob, key rings and key tags and applying a QR code sticker or barcode sticker to a key fob.

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.

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.

connector to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated - DTC P0333 Set.

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

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

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

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

the vent and route down the fuel feed line and secure with zip ties.

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.

replacements.

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.

additional information may be needed when submitting Global Warranty transactions when doing wiring repairs.

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.

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.

the vent and route down the fuel feed line and secure with zip ties.

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.

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.

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.

reading on the volt gauge during the first several minutes after a cold start. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.

replacements.

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".

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.

when replacing a module.

transactions when doing wiring repairs.

replacements.

Transport Bus Diagnostic Tool Kit (EL-51578) has been released to help diagnose any of the Media Oriented Systems Transport bus concerns. The kit contains header connectors that are installed to bypass Media Oriented Systems Transport bus modules. The bypass connector also contains a terminal for verifying Media Oriented Systems Transport control circuit voltages. Technician should review Media Oriented Systems Transport bus description and operation and Diagnostic Trouble Code U0028 diagnostic procedures.

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.

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.

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.

analysis.

additive.

additive.

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.

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

additive.

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

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.

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.

Driver Information Center Messages

additive.

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.

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.

customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

Filter Keep Driving Until Message is Cleared messages 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.

additive.

diesel fuel.

Filter Keep Driving Until Message is Cleared messages 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.

fuel system caused by a failed part.

performance in regards to the customers concerns.

cause of excessive soot from the tailpipe.

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.

DIC, DTC P2463 May be set

customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

fuel system caused by a failed part.

fuel system causing the vehicle to have a hard or no start.

customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

fuel system caused by a failed part.

fuel system causing the vehicle to have a hard or no start.

contacting the drive shaft.

rivabilityissues that it can cause. The ongoing Coronavirus (COVID-19) pandemic has caused significant reductions in driving and fuel use. Due to the surplus of winter grade fuel sitting in storage (pipelines/stations) the EPA is waiving the fuel vapor requirement. This will extend the use of winter fuel into the summer months. The drivability concernsshould not be single events but should be multiple occurrences associated with hot days.

fuel system causing the vehicle to have a hard or no start.

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.

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

fuel system caused by a failed part.

excessive soot from the tailpipe.

fuel system caused by a failed part.

line to correct the customers concern.

excessive soot from the tailpipe.

part and ordering it from the EPC.

rivabilityissues that it can cause. The ongoing Coronavirus (COVID-19) pandemic has caused significant reductions in driving and fuel use. Due to the surplus of winter grade fuel sitting in storage (pipelines/stations) the EPA is waiving the fuel vapor requirement. This will extend the use of winter fuel into the summer months. The drivability concernsshould not be single events but should be multiple occurrences associated with hot days.

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.

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.

excessive soot from the tailpipe.

fuel system causing the vehicle to have a hard or no start.

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.

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.

the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

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

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

The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.

transmission installation.

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 cruising 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.

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.

Conditions

repair of 8 Speed Transmissions

the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

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

engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed.

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.

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

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

test.

Start Up/Shift of the Day Under Light Throttle.

setting up the pinion bearing pre-loads during reassembly of the 9.5/9.76 inch rear axles. Technician will need to use pinion gear install washer part number 11609638 onto the pinion shaft between the flange and nut. Tighten the pinion nut until you achieve 10 pound inch or 1.0 newton rotating torque. After the torque has been achieved back the nut off and remove the washer. Tighten the nut back down until you achieve 15 pound inch or 1.7 newton meters for used bearings or 20 pound inch 2.25 newton meters for new bearings.

no problem was found, to replace the tbv.

for metal.

for metal.

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.

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

up conditions when the clutch packs are full of residual oil.

for metal.

Shifts, Slips, or Flares.

for metal.

Shifts, Slips, or Flares.

Shifts, Slips, or Flares.

repaired for the flare and its still noticed.

for metal.

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.

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.

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

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.

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.

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.

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

test.

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

in addressing torque converter clutch shudder concerns.

in addressing torque converter clutch shudder concerns.

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.

Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.

Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.

addressing underbody component corrosion with customers.

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

shipping film.

Guidelines.

characteristic.

Aluminum Wheels.

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

addressing underbody component corrosion with customers.

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

Guidelines.

addressing underbody component corrosion with customers.

characteristic.

Replacement Guidelines.

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

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

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

addressing underbody component corrosion with customers.

Replacement Guidelines.

percentage.

that it is considered a normal condition.

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

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

characteristic.

Aluminum Wheels.

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

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

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

addressing underbody component corrosion with customers.

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

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 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).

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

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.

strut due to fluid leak.

strut due to fluid leak.

disk on gasket sealing surfaces or reused parts.

Turns.

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.

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.

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.

disk on gasket sealing surfaces or reused parts.

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.

strut due to fluid leak.

from brakes, uneven front brake pad wear.

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.

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.

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.

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.

and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" will ensure the safe handling and ride characteristics of the truck and should not be lowered.

Vehicles.

and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" will ensure the safe handling and ride characteristics of the truck and should not be lowered.

and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" will ensure the safe handling and ride characteristics of the truck and should not be lowered.

repairs requiring balance and Road Force measurement.

Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).

repairs requiring balance and Road Force measurement.

Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).

ride characteristics of GM cars and trucks.

ride characteristics of GM cars and trucks.

Shake, Flat Spotting) of GM Original Equipment Tires.

The Communication ID field did not permit me to enter the complete Communication ID as it is in our internal system. This product is a steel wheel. The customer communication requested return of unsold inventory to inspect the wheel for material dimension. If the material fails to meet the manufacturing specification, the wheel may not perform as expected. If the wheels are not returned, then warranty rate may increase. This product affects the following vehicles: 2011-2019 Chevrolet Silverado 2500HD & 3500HD, 2011-2019 GMC Sierra 2500HD & Sierra 3500HD.

and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" will ensure the safe handling and ride characteristics of the truck and should not be lowered.

GM Vehicles.

The customer communication requested return of unsold inventory to inspect for the shape of the centerpiece of the tire hoist being round when it should be square. If the centerpiece is the incorrect shape then the tire hoist cannot be operated with the OE tools, and the end user would therefore not be able to lower the spare tire with the vehicles original tools.

along with several low speed lan DTCs.

Schedules.

Accessories.

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.

Fog/Driving Lamp Damage.

Accessories.

This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.

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.

This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.

Tires and PDI installed Limited Production Option (LPO) Tires.

This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.

Coverage Period.

This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.

This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.

the Proper use of GM Simplified Maintenance Schedules.

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.

equipped with IOB Radio.

an OnStar In-Vehicle Voice Message Is Heard.

Times After Being Turned Off in Settings and no parts should be replaced due to this condition.

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

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.

Year vehicles.

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

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.

from Rear Leaf Springs.

from Rear Leaf Springs.

from Rear Leaf Springs.

from Rear Leaf Springs.

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.

noise from the metals making contact.

correct the noise.

noise from the metals making contact.

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.

weather climates and testing those batteries.

customers concern.

and/or Insufficient Cooling due to the seals going bad within the part.

and/or Insufficient Cooling due to the seals going bad within the part.

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.

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.

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

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

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

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

fluid leak concern that is caused during extremely low temperatures.

fluid leak concern that is caused during extremely low temperatures.

experience a steering hose leak.

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.

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.

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.

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.