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Service bulletins for the 2026 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.

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

By type

By component

By trouble code

Bulletins, newest first
PIT6366A2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to have the dealer verify the vehicle has RPO TRG - Trailer Camera Provisions to ensure the vehicle is equipped with Turn Signal Activated Camera View.
PIT6406B2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
PIT64402025-10-24. Service bulletin. UNKNOWN OR OTHER. The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
25-NA-2642025-10-21. Service bulletin. SERVICE BRAKES. This informational bulletin provides information on Automated Brake Bleed and/or Brake Hydraulic Test procedure fails when attempting to perform either procedure.
18-NA-1802025-10-16. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
N2525233902025-10-09. Service campaign. STEERING. Certain vehicles may have a condition in which the Intermediate Steering Shaft Lower Bolt is below torque specification. Dealers will inspect and if necessary, correct the front brake line torque to specification.
PIT6411B2025-10-06. Service bulletin. UNKNOWN OR OTHER. This information provides software update information for the K73 Telematics module to correct the symptoms described.
PIC6607B2025-10-06. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history - U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
18-NA-1802025-09-26. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIT64262025-09-25. Service bulletin. UNKNOWN OR OTHER. If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.
PIT6424B2025-09-17. Service bulletin. UNKNOWN OR OTHER. A vehicle may come in with B3A6B set in history. Tech is directed to clear code and advise the customer an OTA will be released for the code.
PIT5479H2025-09-17. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston.
PIT64322025-09-17. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates an issue with an SES MIL and reduced power steering, and brake assist that engineering is working on a fix.
PIC6607A2025-09-16. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history - U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
PIP5865H2025-09-16. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates the possibility of DTC P30BF failing on low mile vehicles due to the possibility of the cylinder 1/2 sliding barrel binding on intake camshaft.
PIT64312025-09-16. Service bulletin. UNKNOWN OR OTHER. This preliminarily information communication an issue with the supercruise dropping out when next to a merging lane and engineering is investigating.
PIT6053C2025-09-16. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates information to inform dealer there is a check valve in the washer fluid hose that connects to the washer pump.
135982025-09-10. Other. UNKNOWN OR OTHER. New Vehicle Monitoring Programs Section in IVH
25-NA-1182025-09-10. Service bulletin. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.
PIT6424A2025-09-09. Service bulletin. UNKNOWN OR OTHER. A vehicle may come in with B3A6B set in history. Tech is directed to clear code and advise the customer an OTA will be released for the code.
PIT5854D2025-09-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.
PIT6236B2025-08-26. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates the active safety features and/or cameras are inoperative or unavailable after a 12 volt battery replacement or battery charge after a low voltage condition.
PIP5865G2025-08-26. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates the possibility of DTC P30BF failing on low mile vehicles due to the possibility of the cylinder 1/2 sliding barrel binding on intake camshaft.
PIT64242025-08-26. Service bulletin. UNKNOWN OR OTHER. A vehicle may come in with B3A6B set in history. Tech is directed to clear code and advise the customer an OTA will be released for the code.
PIP60812025-08-26. Service bulletin. UNKNOWN OR OTHER. This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,

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