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Service bulletins for the 2023 GMC Hummer EV Pickup

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
PIC6602C2025-06-04. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
24-NA-2292025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
N2525023902025-06-02. Service campaign. ENGINE. Service Update. Certain vehicles listed above may require software updates that improve the customer experience and optimize future over-the-air updates. Dealers will perform a comprehensive software update.
PIT5966E2025-05-29. 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.
PIC6602B2025-05-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
PIT6367A2025-05-19. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technicians that this audio concern is a software issue and to not replace any parts at this time.
PIT6215B2025-05-19. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.
PIT6369A2025-05-19. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
PIT6129B2025-05-19. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a program has been released to fix DTCs U2BF2, U2BF3, and/or U2BF6.
N232427510-022025-05-15. Service campaign. UNKNOWN OR OTHER. Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Powertrain Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.
N2525031002025-05-06. Service campaign. UNKNOWN OR OTHER. On certain vehicles listed above, the 12V Battery Negative Cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to inspect and ensure that the High Voltage Service Lockout Harness has the Emergency Cut Loop label installed and the 12V Battery Negative Cable does not have the Emergency Cut Loop label installed.
N242451390-032025-05-06. Service campaign. UNKNOWN OR OTHER. On certain vehicles listed above, the 12V Battery Negative Cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to inspect and ensure that the High Voltage Service Lockout Harness has the Emergency Cut Loop label installed and the 12V Battery Negative Cable does not have the Emergency Cut Loop label installed.
23-NA-1512025-05-06. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
07-00-89-037W2025-05-05. Service bulletin. UNKNOWN OR OTHER. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
PIT6056A2025-05-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates how to erase a DTC that is falsely setting due to a software concern with the Image Processing Module
25-NA-0872025-05-02. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
24-NA-0282025-05-02. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. This service bulletin provides information on Power Tonneau Cover Diagnostic Tips.
23-NA-0362025-05-02. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides diagnostic information for dealers/technicians on an Amber Light on Dual Level Portable Charge Cord Set.
N232427510-012025-05-01. Service campaign. UNKNOWN OR OTHER. Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Powertrain Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.
N2324275102025-04-29. Service campaign. UNKNOWN OR OTHER. Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.
PIT6144G2025-04-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal software concern
PIT63692025-04-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
PIT6286A2025-04-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a normal charteristic with the outside passengers mirror and not to replace the mirror for a normal concern.
PIT6151B2025-04-28. 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.
24-NA-1432025-04-28. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.

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