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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
PIT6406C2025-11-03. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
PIP60902025-11-03. Service bulletin. UNKNOWN OR OTHER. This PI communicates to dealer technicians that DTC P0381 is under investigation and to clear the DTC and return the vehicle to the customer.
PIP60912025-11-03. Service bulletin. UNKNOWN OR OTHER. PIP6091 was created to advise technicians engineering is aware of a misfire during a passing maneuver is being investigated.
PIT64462025-11-03. Service bulletin. UNKNOWN OR OTHER. This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
PIC6602M2025-11-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIT6393F2025-11-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
PIT6132C2025-11-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.
PIT6234A2025-11-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with an aftermarket device wired into the vehicle and cause the vehicle to turn off when shifted into gear. This PI provides a diagnostic tip to inform dealership to inspect for this aftermarket device.
PIC6591C2025-11-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealer to contact TAC for a specific display issue.
PIT64352025-11-02. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates an issue with the battery going dead due to the tailgate release switch and dealerships are to replace the switch.
N25-F163BU2025-10-31. Over-the-air update. UNKNOWN OR OTHER. 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. 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.
25-NA-1212025-10-27. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information on the radio software related issues to update the radio to the latest software version Y177.
25-NA-1192025-10-27. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. This service bulletin provides information on the Service Safety Restraint Message displayed on the DIC Airbag malfunction indicator illuminated.
25-NA-1082025-10-27. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides a procedure to inspect and verify the drive shafts are over extending past the 5mm tolerance, causing the customers concern of a fluid leak under the vehicle.
25-NA-0442025-10-27. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
24-NA-2022025-10-27. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
23-NA-2022025-10-25. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information on High Voltage Drive Motor Battery - TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV, HUMMER EV/SUV.
23-NA-1702025-10-25. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
23-NA-1532025-10-25. Service bulletin. ENGINE. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
PIC6602K2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIC6602L2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIT6425B2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
PIC6551A2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
PIT6425A2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
PIT64352025-10-24. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates an issue with the battery going dead due to the tailgate release switch and dealerships are to replace the switch.

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