2025 GMC Hummer EV SUV Technical Service Bulletins

115 technical service bulletins (TSBs) are on record for the 2025 GMC Hummer EV SUV. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11024324Sep 4, 2025Electrical system, Fuel system. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
• 11022782Aug 30, 2025Other or unknown. This information provides software update information for the K73 Telematics module to correct the symptoms described.
• 11022769Aug 26, 2025Other or unknown. This Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.
• 11026104Jun 7, 2025Wheels. This service bulletin provides information on Tire Sidewall Irregularities.
• 11023367May 17, 2025Fuel system, Electrical system. This service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty.
• 11023484May 16, 2025Fuel system, Electrical system. This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
• 11023388May 15, 2025Fuel system, Electrical system. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
• 11024498May 14, 2025Fuel system, Electrical system. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
• 11024496May 14, 2025Electrical system, Fuel system. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
• 11024488May 14, 2025Transmission and drivetrain. This informational bulletin provides information on Wheel Drive Shaft Retention Snap Ring Design Change.
• 11024487May 14, 2025Electrical system, Fuel system. This service bulletin provides information on High Voltage Drive Motor Battery - TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV, HUMMER EV/SUV.
• 11023365May 14, 2025Fuel system, Electrical system. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
• 11023266May 9, 2025Electrical system, Fuel system. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) illuminated on the Driver Information Center (DIC) and/or a no-start condition following a recent vehicle update.
• 11023051May 8, 2025Forward collision avoidance. This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.
• 11023058May 3, 2025Body and structure, Electrical system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the hood will not latch, open and/or gets stuck, hood ajar message displayed on driver information center (DIC), DTCs P257D, P257E, P257F, B1C80, B1C81, B1C85, B1C89, B1C8C, B1C8D, B1CB5 , B1CBF set.

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