GMC Hummer EV SUV Service Bulletins (2024)

259 manufacturer communications on file.

• August 20, 2026•Document ID: 11036392

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6551C

  Date Added:

  August 27, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11036392-0001.pdf↗
• August 3, 2026•Document ID: 11036194

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6512A

  Date Added:

  August 14, 2026

  Manufacturer:

  CADILLAC

  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.

  Associated Products (59)

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  Associated Documents

  • DownloadMC-11036194-0001.pdf↗
• July 24, 2026•Document ID: 11035351

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6446A

  Date Added:

  July 30, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (50)

  2026 Cadillac CT42026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac CT42025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Yukon2025 GMC Yukon XL+ 30 more
  Associated Documents

  • DownloadMC-11035351-0001.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

  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 more
  Associated Documents

  • DownloadMC-11035340-0001.pdf↗
• July 14, 2026•Document ID: 11035129

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6081C

  Date Added:

  July 21, 2026

  Manufacturer:

  CADILLAC

  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,

  Associated Products (11)

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  Associated Documents

  • DownloadMC-11035129-0001.pdf↗
• July 8, 2026•Document ID: 11034981

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6146A

  Date Added:

  July 13, 2026

  Manufacturer:

  GMC

  Summary

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

  Associated Products (11)

  2026 Cadillac Escalade2026 Cadillac Escalade IQL2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2025 Cadillac Escalade2025 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-11034981-0001.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↗
• June 23, 2026•Document ID: 11034769

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5966F

  Date Added:

  July 7, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11034769-0001.pdf↗
• June 22, 2026•Document ID: 11034939

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  July 8, 2026

  Manufacturer:

  GMC

  Summary

  • The active cabin ventilation feature will operate more reliably • Additional protection for the health of your battery and updates to help prevent excessive battery drain and overheating • Improvements will support successful software updates for your vehicle and allow you to access new features and fixes

  Associated Products (2)

  2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11034939-0001.pdf↗
• June 22, 2026•Document ID: 11034936

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.30

  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

  Associated Products (2)

  2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11034936-0001.pdf↗
• June 17, 2026•Document ID: 11034935

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.10

  Date Added:

  July 8, 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)

  2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11034935-0001.pdf↗
• June 15, 2026•Document ID: 11034933

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N26-G172AL

  Date Added:

  July 8, 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. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior.

  Associated Products (2)

  2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11034933-0001.pdf↗
• June 15, 2026•Document ID: 11034931

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.22

  Date Added:

  July 8, 2026

  Manufacturer:

  GMC

  Summary

  • The active cabin ventilation feature will operate more reliably • Additional protection for the health of your battery and updates to help prevent excessive battery drain and overheating • Improvements will support successful software updates for your vehicle and allow you to access new features and fixes • Improvements to leveling corrections • Improvements to the performance of One-Pedal Driving • Fixes to help maintain Electronic Stability Control and One-Pedal Driving availability after a vehicle software update • Improvements to the power swing gate. • iPhone charging

  Associated Products (2)

  2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV
  Associated Documents

  • DownloadMC-11034931-0001.pdf↗
• June 10, 2026•Document ID: 11034001

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6523

  Date Added:

  June 18, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This PI provides diagnostic steps for dealer technicians to verify the condition and ensure that part replacement is necessary

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  Associated Documents

  • DownloadMC-11034001-0001.pdf↗
• June 5, 2026•Document ID: 11033753

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6477C

  Date Added:

  June 8, 2026

  Manufacturer:

  CADILLAC

  Summary

  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

  Associated Products (41)

  2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Tahoe+ 21 more
  Associated Documents

  • DownloadMC-11033753-0001.pdf↗
• June 3, 2026•Document ID: 11033726

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503A

  Date Added:

  June 8, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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 specific step that directs camera replacement.

  Associated Products (101)

  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+ 81 more
  Associated Documents

  • DownloadMC-11033726-0001.pdf↗
• May 29, 2026•Document ID: 11033186

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6209K

  Date Added:

  June 2, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates recovery procedure after return to dealer message.

  Associated Products (20)

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  Associated Documents

  • DownloadMC-11033186-0001.pdf↗
• May 27, 2026•Document ID: 11033150

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6519

  Date Added:

  June 2, 2026

  Manufacturer:

  GMC

  Summary

  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.

  Associated Products (152)

  2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Express+ 132 more
  Associated Documents

  • DownloadMC-11033150-0001.pdf↗
• May 27, 2026•Document ID: 11033130

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6117

  Date Added:

  June 2, 2026

  Manufacturer:

  GMC

  Summary

  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.

  Associated Products (8)

  2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2025 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-11033130-0001.pdf↗
• May 21, 2026•Document ID: 11032952

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6215C

  Date Added:

  May 28, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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.

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  Associated Documents

  • DownloadMC-11032952-0001.pdf↗