GMC Hummer EV SUV Service Bulletins (2025)
105 manufacturer communications on file.
- October 7, 2025•Document ID: 11023952Service CampaignUNKNOWN OR OTHER
- Mfr Comm. #:
- N252516700
- Date Added:
- October 7, 2025
- Manufacturer:
- CADILLAC
SummaryThe 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.
Associated Products (4)Associated Documents - October 4, 2025•Document ID: 11024439Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6440
- Date Added:
- October 24, 2025
- Manufacturer:
- CADILLAC
SummaryThe Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
Associated Products (210)2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet Colorado+ 190 moreAssociated Documents - October 3, 2025•Document ID: 11025555Service Bulletin/Repair InstructionsSUSPENSION
- Mfr Comm. #:
- 25-NA-152
- Date Added:
- November 15, 2025
- Manufacturer:
- GMC
Summarythis bulletin advises the tech not to replace the shock for possible air leak, but to replace the air valve on the shock.
Associated Products (6)Associated Documents - September 30, 2025•Document ID: 11023410Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- N25-251670
- Date Added:
- October 1, 2025
- Manufacturer:
- GMC
Summary• Improvements to battery health diagnostics • Fixes for efficiency when using fast charging stations • Improvements to reliability for climate control and charging • Improvements to the accuracy of efficiency values • Improvements to shifting • Fixes to protect battery health and adjust charge limits • Improvements to diagnostics that impact propulsion, charging, and One-Pedal Driving During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Associated Products (3)Associated Documents - September 20, 2025•Document ID: 11023351Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6356C
- Date Added:
- September 26, 2025
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates A vehicle may be encountered with super cruise inop due to not seeing drivers face clearly. The tech is directed to inspect the Infrared LED's on the steering wheel and replace the wheel if necessary.
Associated Products (32)2026 Cadillac Vistiq2025 Buick Enclave2025 Cadillac Celestiq2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT62025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Cadillac Lyriq+ 12 moreAssociated Documents - September 10, 2025•Document ID: 11023158Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6424B
- Date Added:
- September 17, 2025
- Manufacturer:
- CADILLAC
SummaryA vehicle may come in with B3A6B set in history. Tech is directed to clear code and advise the customer an OTA will be released for the code.
Associated Products (14)2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Cadillac Vistiq2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2025 Cadillac Celestiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac LyriqAssociated Documents - September 9, 2025•Document ID: 11023157Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT5479H
- Date Added:
- September 17, 2025
- Manufacturer:
- CHEVROLET
SummaryThis Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston.
Associated Products (56)2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Chevrolet Colorado2026 Chevrolet Tahoe2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Chevrolet Colorado2025 Chevrolet Tahoe2025 GMC Canyon2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Yukon+ 36 moreAssociated Documents - September 9, 2025•Document ID: 11023149Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6298A
- Date Added:
- September 16, 2025
- Manufacturer:
- GMC
SummaryThis Preliminary information communicates to the field about a false DTC that is setting and how to address the issue.
Associated Products (3)Associated Documents - September 9, 2025•Document ID: 11023091OtherUNKNOWN OR OTHER
- Mfr Comm. #:
- 13598
- Date Added:
- September 10, 2025
- Manufacturer:
- CHEVROLET
SummaryNew Vehicle Monitoring Programs Section in IVH
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- Mfr Comm. #:
- PIT6424A
- Date Added:
- September 9, 2025
- Manufacturer:
- GMC
SummaryA vehicle may come in with B3A6B set in history. Tech is directed to clear code and advise the customer an OTA will be released for the code.
Associated Products (14)2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Cadillac Vistiq2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2025 Cadillac Celestiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac LyriqAssociated Documents - September 4, 2025•Document ID: 11024324Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM
- Mfr Comm. #:
- 18-NA-180
- Date Added:
- October 16, 2025
- Manufacturer:
- CHEVROLET
SummaryThis Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
Associated Products (22)2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2023 Cadillac Lyriq2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 GMC Hummer EV Pickup2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV+ 2 moreAssociated Documents - August 30, 2025•Document ID: 11022782Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6411A
- Date Added:
- September 5, 2025
- Manufacturer:
- GMC
SummaryThis information provides software update information for the K73 Telematics module to correct the symptoms described.
Associated Products (20)2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 GMC Acadia2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Terrain2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Chevrolet Equinox2025 Chevrolet Tahoe2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC TerrainAssociated Documents - August 26, 2025•Document ID: 11022769Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT5854D
- Date Added:
- September 5, 2025
- Manufacturer:
- GMC
SummaryThis Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.
Associated Products (41)2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV Pickup2024 GMC Yukon+ 21 moreAssociated Documents - June 7, 2025•Document ID: 11026104Service Bulletin/Repair InstructionsWHEELS
- Mfr Comm. #:
- 25-NA-156
- Date Added:
- December 4, 2025
- Manufacturer:
- CHEVROLET
SummaryThis service bulletin provides information on Tire Sidewall Irregularities.
Associated Products (210)2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet Colorado+ 190 moreAssociated Documents - May 17, 2025•Document ID: 11023367Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM
- Mfr Comm. #:
- 22-NA-083
- Date Added:
- September 27, 2025
- Manufacturer:
- CADILLAC
SummaryThis service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty.
Associated Products (14)2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac Lyriq2023 Chevrolet Bolt EUV2023 GMC Hummer EV Pickup2022 Chevrolet Bolt EUV2022 GMC Hummer EV PickupAssociated Documents - May 16, 2025•Document ID: 11023484Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 23-NA-151
- Date Added:
- October 2, 2025
- Manufacturer:
- CADILLAC
SummaryThis service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
Associated Products (12)Associated Documents - May 15, 2025•Document ID: 11023388Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM
- Mfr Comm. #:
- PIE0753I
- Date Added:
- September 30, 2025
- Manufacturer:
- CHEVROLET
SummaryThis 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.
Associated Products (19)2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Vistiq2025 Cadillac Celestiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac Lyriq2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 GMC Hummer EV Pickup2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 GMC Hummer EV Pickup2021 Chevrolet Bolt EVAssociated Documents - May 14, 2025•Document ID: 11024498Service Bulletin/Repair InstructionsFUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM
- Mfr Comm. #:
- 25-NA-044
- Date Added:
- October 27, 2025
- Manufacturer:
- GMC
SummaryThis service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
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- Mfr Comm. #:
- 24-NA-202
- Date Added:
- October 27, 2025
- Manufacturer:
- CADILLAC
SummaryThis service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
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- Mfr Comm. #:
- 24-NA-133
- Date Added:
- October 25, 2025
- Manufacturer:
- GMC
SummaryThis informational bulletin provides information on Wheel Drive Shaft Retention Snap Ring Design Change.
Associated Products (4)Associated Documents