2025 GMC Hummer EV Pickup Technical Service Bulletins

391 technical service bulletins (TSBs) are on record for the 2025 GMC Hummer EV Pickup. 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.

• 11038684Oct 26, 2026Electrical system. Customer Satisfaction Program. Certain vehicles listed above may have a condition in which remanufactured high voltage battery packs were built using modules that were ineligible for reuse and require a second replacement. Dealers will replace the high voltage battery.
• 11038743Oct 24, 2026Other or unknown. Vehicles may display a MIL or “Service High Voltage” message, with DTC P061B stored as current or history. The condition may be caused by a software anomaly and may clear after a vehicle sleep cycle. install the lasted program.
• 11038596Oct 17, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11038459Oct 7, 2026Other or unknown. This Preliminary information communicates how to resolve a issue where a vehicle is not receiving OTA updates
• 11038139Oct 5, 2026Other or unknown. This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
• 11037980Oct 5, 2026Electrical 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.
• 11038136Sep 28, 2026Other or unknown. This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
• 11038132Sep 28, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11037555Sep 26, 2026Other or unknown. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
• 11037445Sep 15, 2026Other or unknown. This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly.
• 11037320Sep 10, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11037253Sep 4, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
• 11037258Sep 3, 2026Other or unknown. This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly. Do not replace parts. Engineering is investigating the root cause; customers may continue to drive the vehicle. This PI will be updated or replaced by a TSB once a resolution is…
• 11037751Sep 2, 2026Other or unknown. • Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages
• 11037749Sep 2, 2026Other or unknown. • Improved availability and map updates for Super Cruise • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system
• 11037748Sep 2, 2026Other or unknown. This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior.
• 11036690Aug 27, 2026Other or unknown. This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication
• 11036348Aug 26, 2026Other or unknown. 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.
• 11036392Aug 20, 2026Other or unknown. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
• 11036194Aug 3, 2026Other or unknown. This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
• 11035351Jul 24, 2026Other or unknown. This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
• 11036499Jul 22, 2026Other or unknown. • Improvements to OnStar through enhancements for charging, Super Cruise, remote start, and collision notification. • Fixes to address connectivity issue
• 11035340Jul 21, 2026Other or unknown. PI to help diagnose A/C concern
• 11036500Jul 15, 2026Other or unknown. Reduces unnecessary service messages, check engine light activations, and OnStar emergency calls from your vehicle.
• 11035129Jul 14, 2026Other or unknown. This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
• 11036504Jul 8, 2026Other or unknown. • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system
• 11036503Jul 8, 2026Other or unknown. • This update enables functionality for King Crab mode. • King Crab mode provides enhanced rear steering for off-road use • To enable this feature, press and hold the right four-wheel steering button on the Drive Mode selector for five seconds • For more information, refer to the Driving and Operating section in the owner's manual
• 11034981Jul 8, 2026Other or unknown. This Preliminary information communicates on a software anomaly for a DTC that sets for the incorrect side and how to address that concern.
• 11034769Jun 23, 2026Other or unknown. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
• 11034001Jun 10, 2026Other or unknown. This PI provides diagnostic steps for dealer technicians to verify the condition and ensure that part replacement is necessary
• 11033753Jun 5, 2026Other or unknown. This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
• 11033726Jun 3, 2026Other or unknown. This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and…
• 11033186May 29, 2026Other or unknown. This Preliminary information communicates recovery procedure after return to dealer message.
• 11033150May 27, 2026Other or unknown. 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.
• 11033130May 27, 2026Other or unknown. This Preliminary Information communicates possible conditions arising from corrosion on the JX310 splice pack that could affect vehicle operation including the ability to start, drive, charge their EV.
• 11032952May 21, 2026Other or unknown. 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.
• 11032948May 19, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11032784May 14, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11032768May 11, 2026Other or unknown. This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
• 11032767May 11, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11032764May 11, 2026Other or unknown. Pi created to provide GM dealers with information on gathering information for projection issue
• 11032763May 11, 2026Other or unknown. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
• 11032658May 8, 2026Other or unknown. PI created to provide dealer technicians with procedures for updating Google Maps.
• 11032625May 8, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to recover an IOK radio.
• 11032624May 8, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11032621May 6, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11032622May 4, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11032560Apr 30, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11032559Apr 30, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11031749Apr 30, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.

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