GMC Hummer EV SUV Service Bulletins

328 manufacturer communications on file.

• October 17, 2025•Document ID: 11024455

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6425A

  Date Added:

  October 24, 2025

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11024455-0001.pdf↗
• October 16, 2025•Document ID: 11024458

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6551A

  Date Added:

  October 24, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues

  Associated Products (176)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac Celestiq2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox+ 156 more
  Associated Documents

  • DownloadMC-11024458-0001.pdf↗
• October 16, 2025•Document ID: 11024337

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N232401570

  Date Added:

  October 16, 2025

  Manufacturer:

  GMC

  Summary

  Certain vehicles listed above may have a condition in which the Battery Energy Control Module will not exit “commissioning” (start-up), because a Cell Monitoring Unit is offline. Dealers will reprogram the Battery Energy Control Module. 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.

  Associated Products (6)

  2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2023 Cadillac Lyriq2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11024337-0001.pdf↗
• October 9, 2025•Document ID: 11024466

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6602K

  Date Added:

  October 24, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.

  Associated Products (19)

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  Associated Documents

  • DownloadMC-11024466-0001.pdf↗
• October 7, 2025•Document ID: 11023952

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N252516700

  Date Added:

  October 7, 2025

  Manufacturer:

  GMC

  Summary

  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.

  Associated Products (4)

  2025 Cadillac Escalade IQ2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11023952-0001.pdf↗
• October 4, 2025•Document ID: 11024439

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6440

  Date Added:

  October 24, 2025

  Manufacturer:

  GMC

  Summary

  The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11024439-0001.pdf↗
• October 3, 2025•Document ID: 11025555

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  25-NA-152

  Date Added:

  November 15, 2025

  Manufacturer:

  GMC

  Summary

  this 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)

  2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11025555-0001.pdf↗
• October 1, 2025•Document ID: 11023904

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6437

  Date Added:

  October 6, 2025

  Manufacturer:

  GMC

  Summary

  This information provides software update information for the K73 Telematics module to correct the symptoms described.

  Associated Products (12)

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  Associated Documents

  • DownloadMC-11023904-0001.pdf↗
• September 30, 2025•Document ID: 11023410

  Over The Air
  UNKNOWN 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)

  2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11023410-0001.pdf↗
• September 20, 2025•Document ID: 11023351

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6356C

  Date Added:

  September 26, 2025

  Manufacturer:

  GMC

  Summary

  This 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)

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  Associated Documents

  • DownloadMC-11023351-0001.pdf↗
• September 15, 2025•Document ID: 11023344

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6426

  Date Added:

  September 25, 2025

  Manufacturer:

  GMC

  Summary

  If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.

  Associated Products (26)

  2026 Buick Enclave2026 Cadillac Escalade IQL2026 Cadillac Vistiq2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Celestiq2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia+ 6 more
  Associated Documents

  • DownloadMC-11023344-0001.pdf↗
• September 10, 2025•Document ID: 11023158

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6424B

  Date Added:

  September 17, 2025

  Manufacturer:

  CADILLAC

  Summary

  A 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)

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  Associated Documents

  • DownloadMC-11023158-0001.pdf↗
• September 9, 2025•Document ID: 11023157

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5479H

  Date Added:

  September 17, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This 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)

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  Associated Documents

  • DownloadMC-11023157-0001.pdf↗
• September 9, 2025•Document ID: 11023149

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6298A

  Date Added:

  September 16, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the field about a false DTC that is setting and how to address the issue.

  Associated Products (3)

  2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11023149-0001.pdf↗
• September 9, 2025•Document ID: 11023148

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6433

  Date Added:

  September 16, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the field on a unwanted history DTC that is setting due to a software anomaly.

  Associated Products (2)

  2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11023148-0001.pdf↗
• September 9, 2025•Document ID: 11023091

  Other
  UNKNOWN OR OTHER

  Mfr Comm. #:

  13598

  Date Added:

  September 10, 2025

  Manufacturer:

  CHEVROLET

  Summary

  New Vehicle Monitoring Programs Section in IVH

  Associated Products (208)

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  Associated Documents

  • DownloadMC-11023091-0001.pdf↗
• September 8, 2025•Document ID: 11023143

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6431

  Date Added:

  September 16, 2025

  Manufacturer:

  CADILLAC

  Summary

  This preliminarily information communication an issue with the supercruise dropping out when next to a merging lane and engineering is investigating.

  Associated Products (11)

  2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL
  Associated Documents

  • DownloadMC-11023143-0001.pdf↗
• September 5, 2025•Document ID: 11023032

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6424A

  Date Added:

  September 9, 2025

  Manufacturer:

  CADILLAC

  Summary

  A 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 Lyriq
  Associated Documents

  • DownloadMC-11023032-0001.pdf↗
• September 4, 2025•Document ID: 11024324

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  18-NA-180

  Date Added:

  October 16, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.

  Associated Products (22)

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  Associated Documents

  • DownloadMC-11024324-0001.pdf↗
• August 30, 2025•Document ID: 11022782

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6411A

  Date Added:

  September 5, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This information provides software update information for the K73 Telematics module to correct the symptoms described.

  Associated Products (20)

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  Associated Documents

  • DownloadMC-11022782-0001.pdf↗