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Service bulletins for the 2025 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.

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

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Only bulletins with type: Service campaign are shown. Show all

Bulletins, newest first
N2525140012026-10-05. Service campaign. ELECTRICAL SYSTEM. Service Update. Certain vehicles listed above may enable the new King Crab Feature through OTA programming or programming at the dealer. Dealers will perform a comprehensive software update. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
N252516700-012026-08-26. Service campaign. UNKNOWN OR OTHER. The Battery Energy Control Module (BECM) in certain vehicles include battery-monitoring software. An update is available for this software that improves the BECM’s ability to detect moisture inside the RESS enclosure. Dealers are to reprogram the BECM with the updated software.
N2525290802026-04-01. Service campaign. ELECTRICAL SYSTEM. Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing.
N2525415102026-03-03. Service campaign. UNKNOWN OR OTHER. Certain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified. Dealers are to provide the customer with the latest design charging adapter.
N2525167002025-10-07. Service campaign. UNKNOWN OR OTHER. The Battery Energy Control Module (BECM) in certain vehicles include battery-monitoring software. An update is available for this software that improves the BECM’s ability to detect moisture inside the RESS enclosure. Dealers are to reprogram the BECM with the updated software.
N252494770-012025-06-20. Service campaign. UNKNOWN OR OTHER. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from seeking civil penalties in litigation. Vehicle owners of the affected vehicles will be mailed an owner’s manual and warranty insert containing this information in English and Spanish.
N2524947702025-06-17. Service campaign. UNKNOWN OR OTHER. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from seeking civil penalties in litigation. Vehicle owners of the applicable vehicles will be mailed an owner’s manual and warranty insert containing this information in English and Spanish.
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.
N2524997502025-04-14. Service campaign. SERVICE BRAKES. Certain vehicles listed above may have a condition in which the front brake lines are below torque specification. Dealers will inspect and if necessary, correct the front brake line torque to specification.
N242451390-022025-01-21. Service campaign. UNKNOWN OR OTHER. Service Update. On certain vehicles, the 12V battery negative cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to inspect and confirm whether or not the High Voltage Service Lockout Harness has the Emergency Cut Loop label installed and ensure that the 12V Battery Negative Cable does not have the Emergency Cut Loop label installed.
N242451390-012024-12-12. Service campaign. UNKNOWN OR OTHER. Service Update. On certain vehicles, the 12V battery negative cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to remove the First Responder Emergency Cut Loop label from the 12V battery negative cable.
N2424702302024-11-19. Service campaign. UNKNOWN OR OTHER. Certain vehicles listed above may need an updated Owner’s Manual insert which includes improved feature descriptions for Remote Key Operation (Key Fobs), Power Hood (eTrunk) for all, and Swing Gate information (for HUMMER EV SUV). Dealers will insert the updated insert into the Owner’s Manual. Since the insert can be easily installed, and to reduce customer inconvenience, the insert will be sent directly to customers of record along with instructions. Customers may place the insert into their Owner’s Manual or, if they desire, they may ask the dealer to perform this task.
N2424731302024-11-14. Service campaign. SERVICE BRAKES. Service Update. On certain vehicles, there may be debris/machining chips in the rear knuckles. Dealers will inspect, and if necessary, retap the rear brake caliper bracket threads.
General Communication2024-08-26. Service campaign. ELECTRICAL SYSTEM. Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
N2424513902024-08-01. Service campaign. UNKNOWN OR OTHER. Service Update. On certain vehicles, the 12V battery negative cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to remove the First Responder Emergency Cut Loop label from the 12V battery negative cable.

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