GMC Hummer EV SUV Service Bulletins

356 manufacturer communications on file.

• August 28, 2026•Document ID: 11036715

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6533B

  Date Added:

  September 2, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.

  Associated Products (25)

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  Associated Documents

  • DownloadMC-11036715-0001.pdf↗
• August 27, 2026•Document ID: 11036690

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6541

  Date Added:

  September 2, 2026

  Manufacturer:

  GMC

  Summary

  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

  Associated Products (130)

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  Associated Documents

  • DownloadMC-11036690-0001.pdf↗
• August 26, 2026•Document ID: 11036348

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N252516700-01

  Date Added:

  August 26, 2026

  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 (11)

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  Associated Documents

  • DownloadMC-11036348-0001.pdf↗
• August 20, 2026•Document ID: 11036392

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6551C

  Date Added:

  August 27, 2026

  Manufacturer:

  CADILLAC

  Summary

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

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  Associated Documents

  • DownloadMC-11036392-0001.pdf↗
• August 14, 2026•Document ID: 11036222

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6533A

  Date Added:

  August 17, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.

  Associated Products (26)

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  Associated Documents

  • DownloadMC-11036222-0001.pdf↗
• August 3, 2026•Document ID: 11036194

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6512A

  Date Added:

  August 14, 2026

  Manufacturer:

  BUICK

  Summary

  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.

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  Associated Documents

  • DownloadMC-11036194-0001.pdf↗
• July 30, 2026•Document ID: 11035710

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6517C

  Date Added:

  August 5, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI advise dealers If U3000 is present, follow the correct service doc by Symptom Byte before contacting PQC; if not present, verify the camera is clean, then contact PQC if no issue is found.

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  Associated Documents

  • DownloadMC-11035710-0001.pdf↗
• July 24, 2026•Document ID: 11035351

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6446A

  Date Added:

  July 30, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.

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  Associated Documents

  • DownloadMC-11035351-0001.pdf↗
• July 23, 2026•Document ID: 11035157

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N262559120

  Date Added:

  July 23, 2026

  Manufacturer:

  GMC

  Summary

  Certain vehicles listed above may have a condition in which the Vehicle Leveling Module (VLM) may enter a faulted state during normal vehicle operation due to a software calibration issue. Dealers will reprogram the Vehicle Leveling Module (VLM). 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 (2)

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  Associated Documents

  • DownloadMC-11035157-0001.pdf↗
• July 22, 2026•Document ID: 11036499

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.40

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Improvements to OnStar through enhancements for charging, Super Cruise, remote start, and collision notification. • Fixes to address connectivity issue

  Associated Products (2)

  2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11036499-0001.pdf↗
• July 21, 2026•Document ID: 11035340

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5099J

  Date Added:

  July 29, 2026

  Manufacturer:

  CHEVROLET

  Summary

  PI to help diagnose A/C concern

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  Associated Documents

  • DownloadMC-11035340-0001.pdf↗
• July 15, 2026•Document ID: 11036500

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.30

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  Reduces unnecessary service messages, check engine light activations, and OnStar emergency calls from your vehicle.

  Associated Products (2)

  2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11036500-0001.pdf↗
• July 14, 2026•Document ID: 11035129

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6081C

  Date Added:

  July 21, 2026

  Manufacturer:

  GMC

  Summary

  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,

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  Associated Documents

  • DownloadMC-11035129-0001.pdf↗
• July 13, 2026•Document ID: 11036502

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.30

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • Improvements to system responsiveness • Improvements to camera image clarity • Fixes to prevent blank screens and audio drop-outs • Improvements to vehicle software update installation • Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics • Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display message • Updates to allow drive mode selection from the center display

  Associated Products (2)

  2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11036502-0001.pdf↗
• July 13, 2026•Document ID: 11036501

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.00

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  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.

  Associated Products (2)

  2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11036501-0001.pdf↗
• July 8, 2026•Document ID: 11036504

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • 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

  Associated Products (2)

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  Associated Documents

  • DownloadMC-11036504-0001.pdf↗
• July 8, 2026•Document ID: 11036503

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.10

  Date Added:

  August 31, 2026

  Manufacturer:

  GMC

  Summary

  • 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

  Associated Products (2)

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  Associated Documents

  • DownloadMC-11036503-0001.pdf↗
• July 8, 2026•Document ID: 11034981

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6146A

  Date Added:

  July 13, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates on a software anomaly for a DTC that sets for the incorrect side and how to address that concern.

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  Associated Documents

  • DownloadMC-11034981-0001.pdf↗
• June 25, 2026•Document ID: 11034930

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  July 8, 2026

  Manufacturer:

  GMC

  Summary

  • Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics • Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display message

  Associated Products (2)

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  Associated Documents

  • DownloadMC-11034930-0001.pdf↗
• June 24, 2026•Document ID: 11034768

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6056B

  Date Added:

  July 7, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates how to erase a DTC that is falsely setting due to a software concern with the Image Processing Module

  Associated Products (1)

  2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11034768-0001.pdf↗