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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
PIT62242024-09-13. Service bulletin. ENGINE. This Preliminary information communicates the Heavy Fuel Usage message in the DIC is normal due to low fuel range and current driving habits.
PIT62232024-09-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a diagnostic tip for unwanted washer pump activation, flickering headlamp, and horn unwanted, due to a possible concern with ground G104.
PIP5901A2024-09-12. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that the tool for the HD transfer cases to measure clutch pack shim selection is in development.
PIT6177A2024-09-12. Service bulletin. SUSPENSION. This Preliminary information communicates an issues of the left rear leaf spring making a squeaking noise due to diesel fuel contamination that may occur during refueling after the fuel nozzle is removed from the fuel filler pipe. Dealers are to create a foam seal around the fuel filler pipe to prevent fuel from leaking onto the left spring.
23-NA-1832024-09-12. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This technical bulletin provides repair information to correct a customer concern of Radio Software Version Y171 – Multiple Updates.
23-NA-0442024-09-11. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This service bulletin provides information on AGM batteries that require less frequent charging in storage.
19-NA-2372024-09-11. Service bulletin. ENGINE. This service bulletin explains how to identify possible DEF system contamination.
PIT62202024-09-11. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that a dealer may find the underhood beauty covers missing. The dealer is advised that these are missing by design and should not be ordered for the vehicle.
PIT6151A2024-09-11. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician that GM is aware of this concern and to update the Google maps application through the playstore.
PIT6101H2024-09-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates Engineering is investigating a no audio issue.
PIT6193A2024-09-11. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealer instructions for diagnosing Google Maps concerns
PIT5509L2024-09-11. Service bulletin. SERVICE BRAKES. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System” message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
PIC6086H2024-09-11. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communication provides the technician with steps to resolve the issue of an oily substance that may be found on the inside windshield surface, and appears to be leaking from the rear view mirror area. Technician will remove the moisture sensor and clean the glass and mounting bracket with alcohol wipe. If the gel separates from the sensor the sensor will need to be replaced.
PIT62122024-09-11. Service bulletin. SERVICE BRAKES. This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set.
N242435631-032024-09-11. Service campaign. ELECTRICAL SYSTEM. Customer Satisfaction Program - certain vehicles may have a condition where the battery is at risk for a drain following an over-the-air update. Dealers are to reprogram the serial data gateway module and the radio.
PIT6192A2024-09-10. Service bulletin. ENGINE. This Preliminary information communicates an issue with the engine harness chaffing on an a/c pipe causing communication issues.
PIT62092024-09-10. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates recovery procedure after return to dealer message.
PIP5984D2024-09-09. Service bulletin. ENGINE. This Preliminary information communicates the part ordering restriction of the 6.2L L87 engine.
PIT6101G2024-09-09. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates Engineering is investigating a no audio issue.
18-NA-1502024-09-07. Service bulletin. ENGINE. This service bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information.
17-NA-3742024-09-07. Service bulletin. ENGINE. This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.
PIT6134B2024-09-06. Service bulletin. SERVICE BRAKES. This Preliminary information communicates an issue with premature brake pad life and engineering is working on release new pad lining material.
PIT6073C2024-09-06. Service bulletin. SEATS. This Preliminary information communicates an issue with the front heated seat on indicators being inoperative, but the heated seats work.
PIP5984C2024-09-06. Service bulletin. ENGINE. This Preliminary information communicates the part ordering restriction of the 6.2L L87 engine.
PIP5964D2024-09-06. Service bulletin. ENGINE. This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stored. Technicians are directed to replace the K111FPDCM if any of these conditions can be validated and code P023F or P129F is found.

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