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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
PIP6081C2026-07-21. 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,
PIT5767B2026-07-21. Service bulletin. UNKNOWN OR OTHER. This PI provides a diagnostic tip on poor a/c performance due to a condenser issue and instructions to replace the ac condenser.
PIT6146A2026-07-13. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates on a software anomaly for a DTC that sets for the incorrect side and how to address that concern.
PIT6455B2026-07-13. Service bulletin. UNKNOWN OR OTHER. This PI communications information that Engineering is investigating the Service Driver Assist message with current DTC B1B2F Telematics Control Module and U1624 Image Processing Control Module setting.
PIT65322026-07-13. Service bulletin. UNKNOWN OR OTHER. The purpose of this PI is to inform dealer technicians of a normal cab pressure relief valve noise to avoid unnecessary part replacement
PIT5910C2026-07-07. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the dome light off switch not working after the BCM goes asleep. Advise dealership it is working as designed.
PIT65312026-07-07. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates an issue with aftermarket LED lighting causing false front park assist alerts and dealers are to install the factory lighting before performing any in depth diagnostics.
PIT6476C2026-07-07. 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.
PIT5966F2026-07-07. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
PIT5544J2026-07-07. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates information on a hydraulic rush type noise from the power steering gear. 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.
N25-2523322026-06-24. Over-the-air update. UNKNOWN OR OTHER. • Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super Cruise.
PIT6503B2026-06-22. 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.
PIT65232026-06-18. Service bulletin. UNKNOWN OR OTHER. This PI provides diagnostic steps for dealer technicians to verify the condition and ensure that part replacement is necessary
PIT65222026-06-18. Service bulletin. UNKNOWN OR OTHER. This PI advises dealers that if the K160 Brake System Control Module sets DTC P0606 along with P0562 and/or P25A2, additional diagnostic aids should be followed before replacing parts. The PI provides guidance to inspect for low voltage conditions, wiring, terminal concerns, and module communication issues that may cause false or intermittent EBCM DTCs.
PIT6132E2026-06-18. 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.
N2625606802026-06-10. Service campaign. POWER TRAIN. Certain vehicles may have a condition in which the bolts for the transmission control valve body may be loose or missing. Dealers will retorque or replace the suspect valve body bolts.
PIT6477C2026-06-08. Service bulletin. UNKNOWN OR OTHER. This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
PIT6426B2026-06-08. Service bulletin. UNKNOWN OR OTHER. Fog lamp control may be missing from radio display after a BCM update. Engineering is investigating.
PIT6467B2026-06-08. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that this concern is being root caused and no repairs should be attempted at this time
PIT6503A2026-06-08. 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.
PIT6054D2026-06-08. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that the inner tailgate cannot be disabled if the vehicle is not equipped with passive entry.
N2625583002026-06-03. Service campaign. UNKNOWN OR OTHER. Certain vehicles may have been built with the incorrect Body Control Module (BCM) calibration data file. Dealers will reprogram the BCM with the correct software.
PIP61192026-06-02. Service bulletin. UNKNOWN OR OTHER. A dealer may encounter multiple DTCs when a B65 Manifold Absolute Pressure/Intake Air Temperature Sensor fails. Diagnostics may be misleading but if the Fuel Rail Temperature has the 419 degrees displayed this PI will assist with repairs.
PIT6209K2026-06-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates recovery procedure after return to dealer message.
PIT65192026-06-02. Service bulletin. UNKNOWN OR OTHER. This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.

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