2026 Cadillac Lyriq TSBs
166 Technical Service Bulletins across 15 categories
Categories
Electrical
44 bulletinsIf a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing...
Read full bulletin
the Image processing module.
Additional protection for battery health and to help prevent battery drain Improved charging messaging in the driver...
Read full bulletin
display Improved vehicle diagnostics
Additional protection for battery health and to help prevent battery drain Improved charging messaging in the driver...
Read full bulletin
display Improved vehicle diagnostics Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras. Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. Cabin Glance, a new feature that displays a live feed of the seating area on your infotainment screen. This allows you to check on passengers, such as kids or pets. Fixes to help ensure responsiveness for the driver display and rear view camera. Improvements to reliability for alerts and chimes.
Improved vehicle performance when driving in Reverse on slippery surfaces Better One-Pedal Driving performance ...
Read full bulletin
Additional protection for battery health and prevention for battery drain Improved accuracy for driver display messages
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp)...
Read full bulletin
illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
This Preliminary information communicates how to recover the Image Processing Module.
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp)...
Read full bulletin
illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru...
Read full bulletin
TAC.
If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing...
Read full bulletin
the Image processing module.
This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this...
Read full bulletin
concern, to perform the steps listed and should be able to reprogram the module and correct this.
Certain vehicles may have a condition in which the Telematic Control Module may enter an unrecoverable state.
Read full bulletin
Dealers are to reprogram the Telematic Control Module. IMPORTANT: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru...
Read full bulletin
TAC.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
Read full bulletin
correct it.
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru...
Read full bulletin
TAC.
This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
Read full bulletin
correct it.
Certain vehicles may have a condition in which the Telematic Control Module may enter an unrecoverable state.
Read full bulletin
Dealers are to reprogram the Telematic Control Module. IMPORTANT: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This Preliminary information communicates an issue with a replace or low FOB battery message
Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras.
Read full bulletin
Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. Cabin Glance, a new feature that displays a live feed of the seating area on your infotainment screen. This allows you to check on passengers, such as kids or pets. Fixes to help ensure responsiveness for the driver display and rear view camera. Improvements to reliability for alerts and chimes.
Certain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state.
Read full bulletin
Dealers are to reprogram the Telematic Control Module. Important: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This preliminary information is for technicians that will have this message after USB updating the radio.
Read full bulletin
The repair should not involve replacing a module as pressing the reset button will correct this issue.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
Read full bulletin
correct it.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
Read full bulletin
DTC'ss
This P/I is advising that the TCM should not be replaced for DTC P16F4 and to follow the repair instructions.
This Preliminary information communicates that a front license plate frame may cause interference with the park assist...
Read full bulletin
sensors.
Improvements to help protect battery health in low temperatures.
Read full bulletin
Improvements to diagnostics to reduce service messages. Fixes to help protect battery health in high temperatures. Fixes to improve responsiveness for vehicle diagnostics.
This P/I is advising that the TCM should not be replaced for DTC P16F4 and to request FSE assistance for a TCM data...
Read full bulletin
pull.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
Read full bulletin
DTC's
This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
This preliminary information communicates an issue with the DRL LED strips flickering and dealer are to replace the...
Read full bulletin
lighting control module.
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp)...
Read full bulletin
illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
Read full bulletin
DTC's
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
Read full bulletin
DTC's
The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission...
Read full bulletin
information.
This information provides software update information for the K73 Telematics module to correct the symptoms described.
This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history...
Read full bulletin
- U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission...
Read full bulletin
information.
This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history...
Read full bulletin
- U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
This Preliminary information communicates the active safety features and/or cameras are inoperative or unavailable after...
Read full bulletin
a 12 volt battery replacement or battery charge after a low voltage condition.
This Preliminary Information communication provides information to the technician about vehicles that have an...
Read full bulletin
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.
This preliminary information is for technicians that will have this message after USB updating the radio.
Read full bulletin
The repair should not involve replacing a module as pressing the reset button will correct this issue.
This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history...
Read full bulletin
-U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use...
Read full bulletin
for certain repairs, such as Wiring Harness Repairs.
Other
32 bulletinsThis preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
Read full bulletin
They should follow the notes mentioned prior to anything being replaced.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with...
Read full bulletin
the image processor #2 and how to restore communication
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
This preliminary information informs customers and technicians of the short term work around to restore the proper Themes operation.
Read full bulletin
No parts should be replaced at this time.
This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM.
Read full bulletin
Advises of how to contact PQC to authorize SDGM replacement.
Pi created to provide GM dealers with information on gathering information for projection issue
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical...
Read full bulletin
Assistance Case in CX Connect.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the field about a normal condition about a message that appears when using...
Read full bulletin
a NFC card to start the vehicle when a key fob or a digital key device is not present.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
Read full bulletin
They should follow the notes mentioned prior to anything being replaced.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
Read full bulletin
They should follow the notes mentioned prior to anything being replaced.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
Read full bulletin
They should follow the notes mentioned prior to anything being replaced.
A vehicle may come in with B3A6B set in history.
Read full bulletin
Tech is directed to clear code and advise the customer an OTA will be released for the code.
New Vehicle Monitoring Programs Section in IVH
A vehicle may come in with B3A6B set in history.
Read full bulletin
Tech is directed to clear code and advise the customer an OTA will be released for the code.
PI is created to advise dealer of an issue that may have been induced by OTA programming
A vehicle may come in with B3A6B set in history.
Read full bulletin
Tech is directed to clear code and advise the customer an OTA will be released for the code.
Diagnostic Guidance for U3000-97 Long Range Radar Blocked
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera...
Read full bulletin
and dealers to replace the camera.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
Read full bulletin
50 terminal test probe, replacement terminals, and terminated leads.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication...
Read full bulletin
configuration did not complete correctly.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
Read full bulletin
50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
Read full bulletin
50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
Read full bulletin
50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
Read full bulletin
50 terminal test probe, replacement terminals, and terminated leads.
Infotainment
32 bulletinsThis Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and...
Read full bulletin
how to reset/clear the message.
Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super...
Read full bulletin
Cruise.
This PI details a possible issue with the heads up display being inop, due to a possible software anomaly.
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
The head-up display will now be less likely to experience any loss of image.
Read full bulletin
Fixes to help ensure successful vehicle software updates. Improvements to the performance of electric vehicle sound enhancement. Fixes to help prevent loss of functionality for Dolby Atmos. Fixes to ensure proper audio options display in menu.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
This PI details a possible issue with the heads up display being inop, due to a possible software anomaly.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
This Preliminary Information communicates the steps on diagnosing certain EV vehicles with a blank IPC screen, no charge or start concerns.
Read full bulletin
Information includes steps to resolve for various symptoms are provided to the dealership technician.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
Read full bulletin
to the vehicle.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
Read full bulletin
to the vehicle.
This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed...
Read full bulletin
limit sign displayed on instrument cluster.
This PI details a possible issue with the heads up display being inop, due to a possible software anomaly.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
Read full bulletin
to the vehicle.
Improvements to the infotainment system from Android update.
Read full bulletin
This Android update removes Alexa Built-in (if supported). Google Assistant will remain available. Fixes to improve responsiveness for the center display, driver display, and camera. Fixes for Apple CarPlay functionality and connectivity (if supported). Fixes to help ensure proper functionality for Bluetooth. Improvements to audio system performance.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
Read full bulletin
to the vehicle.
This Preliminary information communicates to dealers a procedure to reset the radio.
This update will allow you to enable digital key with the myCadillac mobile app.
Read full bulletin
Digital key is a new feature that lets you lock, unlock, and start your vehicle using your smartphone or smartwatch. This feature allows for convenient vehicle access without a key fob. For more information, refer to the Cadillac support site. Digital key requires a compatible device and active OnStar service plan. See onstar.com for details and limitations. Fixes for active cabin ventilation. Fixes to help ensure your vehicle can recognize the key when using digital key. Improvements to the performance of vehicle software updates. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
Read full bulletin
to the vehicle.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
Read full bulletin
display
Fixes to help prevent loss of functionality for OnStar, infotainment apps, and connectivity features.
Read full bulletin
During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle.
Great News! Your vehicle keeps getting better.
Read full bulletin
This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. Better Never Stops During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Improvements to Apple CarPlay performance.
Read full bulletin
During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and...
Read full bulletin
how to reset/clear the message.
Engine
19 bulletinsThis Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
Read full bulletin
Engineering is working on a new module.
This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
Read full bulletin
Engineering is working on a new module.
Fog lamp control may be missing from radio display after a BCM update.
Read full bulletin
Engineering is investigating.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on...
Read full bulletin
part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications.
Read full bulletin
Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
Improvements to diagnostics and service messaging for battery health, particularly in humid conditions.
Read full bulletin
Improvements to transmission diagnostics used for shifting. Improvements to charging system diagnostics. Fixes to help protect EV adapter from overheating while charging. Reduces unnecessary service messages, check engine light activations, and OnStar calls from your vehicle.
This PI Communicates that a grind noise maybe heard if the spring plate is not transferred to the new sunroof/shade...
Read full bulletin
motor.
This preliminary information is to inform technicians and customers to not replace anything at this time and engineering...
Read full bulletin
is investigating the OTA concern that caused this.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on...
Read full bulletin
part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
Read full bulletin
Engineering is working on a new module.
This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and...
Read full bulletin
Brake after an Ignition Cycle due to an Engineering change.
This Preliminary information communicates procedure to relearn window motor when it reverses when expressing up.
This Preliminary Information communication provides information to the technician about vehicles that have had multiple...
Read full bulletin
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.
This Preliminary information communicates ordering process for the front and rear drive units are on restriction for all...
Read full bulletin
listed EV vehicles for engineering review.
This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that...
Read full bulletin
Engineering is working on a resolution.
This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and...
Read full bulletin
Brake after an Ignition Cycle due to an Engineering change.
This preliminarily information communication an issue with the supercruise dropping out when next to a merging lane and...
Read full bulletin
engineering is investigating.
This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
Read full bulletin
Engineering is working on a new module.
This preliminary information is for service technicians who come across this concern to verify the operation in GDS2 and...
Read full bulletin
that engineering is aware of this issue and this PI will be updated to a bulletin once a determination has been made.
Pre-Delivery & Maintenance
9 bulletinsThis Preliminary information communicates a condition my exist causing a service theft alarm message.
A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete.
Read full bulletin
Tech is directed to drive a city route to complete the procedure.
A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete.
Read full bulletin
Tech is directed to drive a city route to complete the procedure.
A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete.
Read full bulletin
Tech is directed to drive a city route to complete the procedure.
This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.
This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector...
Read full bulletin
Reconnect Labor Code Numbers.
This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance...
Read full bulletin
programs.
This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector...
Read full bulletin
Reconnect Labor Code Numbers.
The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for...
Read full bulletin
causing multiple customer concerns that do not have other diagnostic methods to identify them.
Body & Paint
6 bulletinsThis Preliminary information communicates an issue with the virtual garage door opener not programming to a garage...
Read full bulletin
opener and to replace the opener with a new updated part.
This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position...
Read full bulletin
after curbview assist is used.
This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position...
Read full bulletin
after curbview assist is used.
This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position...
Read full bulletin
after curbview assist is used.
This PI addresses a possible roll up then down window message.
This Preliminary information communicates a diagnostic tip on how to resolve a issue of the horn sounding when vehicle...
Read full bulletin
doors are being closed and the key in vehicle reminder set to off.
Software & Calibration
5 bulletinsThis preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven.
Read full bulletin
When a repair is available, this PI will be updated.
This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost...
Read full bulletin
left or right side object detection alerts.
This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost...
Read full bulletin
left or right side object detection alerts.
This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
Brakes
4 bulletinsImprovements to Super Cruise disengagement alerts.
Read full bulletin
Improvements to the availability of Super Cruise. Improvements to driver attention monitoring to help reduce unnecessary OnStar escalation calls. Improvements to Super Cruise lane merging performance. Improvements to the responsiveness of rear view camera display. Improvements to the performance of Brake Assist. Fixes to help ensure proper Super Cruise lane change functionality. Improved visuals for Lane Keep Assist feature
Improvements to Super Cruise disengagement alerts.
Read full bulletin
Improvements to the availability of Super Cruise. Improvements to driver attention monitoring to help reduce unnecessary OnStar escalation calls. Improvements to Super Cruise lane merging performance. Improvements to the responsiveness of rear view camera display. Improvements to the performance of Brake Assist. Fixes to help ensure proper Super Cruise lane change functionality. Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.
This service bulletin provides a service procedure to correct a customer concern of Grind, Groan and/or Rubbing Type...
Read full bulletin
Noise Coming from Front of Vehicle During Braking Hard (High Deceleration).
This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to...
Read full bulletin
facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.
HVAC & Climate
4 bulletinsPI to help diagnose A/C concern
This Preliminary information communicates that the upper compressor mount could be twisted causing a vibration or noise...
Read full bulletin
concern while the compressor is running.
This Preliminary information communicates that the upper compressor mount could be twisted causing a vibration or noise...
Read full bulletin
concern while the compressor is running.
This Preliminary information communicates that the upper compressor mount could be twisted causing a vibration or noise...
Read full bulletin
concern while the compressor is running.
Lighting
4 bulletinsThis PI communicates a possible concern with the customer experiencing a service headlamp message on startup and DTC's...
Read full bulletin
B1B5F SYM49 and/or B1B60 SYM49 maybe found current or history.
This PI communicates a possible concern with the customer experiencing a service headlamp message on startup and DTC's...
Read full bulletin
B1B5F SYM49 and/or B1B60 SYM49 maybe found current or history.
Certain vehicles listed above may be missing relevant information regarding the use of snow chains, snow socks, or other...
Read full bulletin
traction devices from the Owners Manual. Vehicle owners will be mailed an owners manual insert to include with other important printed material in the glovebox. For vehicles currently on dealer lots, dealers will include the insert prior to delivery.
Certain vehicles may be missing relevant information regarding the use of snow chains, snow socks, or other traction devices from the Owners Manual.
Read full bulletin
Vehicle owners will be mailed an owners manual insert to include with other important printed material in the glovebox. For vehicles currently on dealer lots, dealers will include the insert prior to delivery.
Tires & Wheels
2 bulletinsThis preliminary information communicates information about how to determine if a wheel and tires size change is...
Read full bulletin
available.
This service bulletin provides information on Tire Sidewall Irregularities.
Fuel System
2 bulletinsThis PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and...
Read full bulletin
advises of warranty direction.
This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for...
Read full bulletin
analysis.
Hybrid & EV
1 bulletinCertain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified.
Read full bulletin
Dealers are to provide the customer with the latest design charging adapter.
Transmission
1 bulletinFixes for active cabin ventilation.
Read full bulletin
Fixes to help ensure proper functionality for heating and cooling features. Improvements to night mode lights for shifting gears. Fixes for Daytime Running Lamps turning on when set to Off. Improvements to the performance of electric vehicle sound enhancement. Fixes to help prevent loss of functionality for Dolby Atmos. Fixes to ensure proper audio options display in menu. Fixes to help ensure accurate driver display messages and alerts.
Air Bags & Safety
1 bulletinThis Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.