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Service bulletins for the 2025 GMC Sierra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

759 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
PIT6406G2026-05-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
661.402026-05-01. Over-the-air update. UNKNOWN OR OTHER. • Fixes to help ensure successful vehicle software updates • Fixes to help protect battery life • Improvements to provide more accurate speed limit detection on the driver’s display • Improvements to the availability of driver assistance features and fewer notifications or warnings • Fixes to help ensure driver assistance features remain functional when the windshield freezes
PIC6602U2026-04-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIC6629D2026-04-30. Service bulletin. UNKNOWN OR OTHER. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
PIT6452D2026-04-29. Service bulletin. UNKNOWN OR OTHER. This is a diagnostic PI to assist on a repair to fix a concern for the HVAC temperature doors binding at times
PIT65032026-04-23. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on 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.
PIT5689N2026-04-23. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarily on hold while PIE0572 is active. PIE0572 has now ended and reinstating the PI.
N2625473302026-04-17. Service campaign. UNKNOWN OR OTHER. Certain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state. 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.
PIT3271Q2026-04-07. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
661.302026-04-02. Over-the-air update. UNKNOWN OR OTHER. • Improvements to the performance of driver assistance features • Fixes to help ensure accurate driver display messages and alerts • 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
661.102026-04-02. Over-the-air update. UNKNOWN OR OTHER. • Improvements to diagnostics and service messaging for battery health, particularly in humid conditions • Improvements to transmission diagnostics used for shifting • Improvements to charging system diagnostics • Fixes to help protect EV adapter from overheating while charging
661.202026-04-02. Over-the-air update. UNKNOWN OR OTHER. • Improvements to accuracy of Park Assist messaging. • Fixes to improve performance of driver assistance systems and rear view camera. • Improvements to responsiveness of rear view camera. • Fixes to address Super Cruise disengaging erroneously.
661.102026-04-02. Over-the-air update. UNKNOWN OR OTHER. • Fixes to help prevent false Service Driver Assist System messages. • Improvements to connectivity for OnStar.
N2525290802026-04-01. Service campaign. ELECTRICAL SYSTEM. Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing.
PIT6368C2026-03-31. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
PIT6476A2026-03-31. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates an issue with a Service Brake system message and DTC C055F due to a low battery condition. Dealer are to inspect the battery, battery connections and for any aftermarket devices.
PIT6473E2026-03-31. Service bulletin. UNKNOWN OR OTHER. This PI was created to help avoid unnecessary front camera module replacements
PIT6244A2026-03-31. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates how the left lower corner of the DIC is dual purpose and when vehicle is first started it displays the rear passenger seatbelt indicators and then after a short drive it will change and show the four-wheel drive indicator.
PIP61052026-03-31. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information (PI) relays to dealer technicians to replace the powertrain control relay in the under hood fuse relay center.
PIT6413A2026-03-24. Service bulletin. UNKNOWN OR OTHER. This preliminary information is for technicians that will have this message after USB updating the radio. The repair should not involve replacing a module as pressing the reset button will correct this issue.
PIT64952026-03-24. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform GM customers and technicians that engineering is investigating this issue and once a solution is avialable, it will be moved to a bulletin.
PIC6583H2026-03-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates how to move U018B from Current to History.
PIT6473C2026-03-19. Service bulletin. UNKNOWN OR OTHER. This PI was created to help avoid unnecessary front camera module replacements
PIT6473D2026-03-19. Service bulletin. UNKNOWN OR OTHER. This PI was created to help avoid unnecessary front camera module replacements
PIT6473B2026-03-17. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.