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Service bulletins for the 2023 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.

1426 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
PIT6446A2026-07-30. 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.
PIT5680B2026-07-30. Service bulletin. UNKNOWN OR OTHER. This PI provides information to repair the door water deflector which is not sealed properly allows water into the door jam/sill area.
PIT5099J2026-07-29. Service bulletin. UNKNOWN OR OTHER. PI to help diagnose A/C concern
PIT5509N2026-07-29. Service bulletin. UNKNOWN OR OTHER. This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
PIT6473F2026-07-21. Service bulletin. UNKNOWN OR OTHER. This PI was created to help avoid unnecessary front camera module replacements
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.
PIT6529A2026-07-21. Service bulletin. UNKNOWN OR OTHER. This PI was created to address an Intermittent Loss of Connectivity, GPS, or Wi-Fi Due to OnStar Module concern.
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.
PIT65292026-07-07. Service bulletin. UNKNOWN OR OTHER. This PI was created to address an Intermittent Loss of Connectivity, GPS, or Wi-Fi Due to OnStar Module concern.
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.
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.
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.
PIP61182026-05-28. Service bulletin. UNKNOWN OR OTHER. This PI shares with Technician that a DTC may occur P2002 LZ0 After OTA Update N25-251385
PIP61152026-05-28. Service bulletin. UNKNOWN OR OTHER. The document advise technicians after an engine repair involving removal of the camshaft actuators, the vehicle may set p1101 P0172 and or stalls when taken off idle. The technician is instructed to verify the intake and exhaust camshaft actuators are installed onto the correct camshafts.
PIC6602X2026-05-28. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIT6209J2026-05-19. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates recovery procedure after return to dealer message.
PIC6540J2026-05-19. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers a procedure to reset the radio.

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