GMC Hummer EV Pickup Service Bulletins (2022)

726 manufacturer communications on file.

• May 14, 2025•Document ID: 11024498

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

  Mfr Comm. #:

  25-NA-044

  Date Added:

  October 27, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.

  Associated Products (14)

  2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Vistiq2025 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 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11024498-0001.pdf↗
• May 14, 2025•Document ID: 11024496

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

  Mfr Comm. #:

  24-NA-202

  Date Added:

  October 27, 2025

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.

  Associated Products (18)

  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 Pickup2024 GMC Hummer EV SUV2023 Cadillac Lyriq2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 GMC Hummer EV Pickup2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 GMC Hummer EV Pickup2021 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11024496-0001.pdf↗
• May 14, 2025•Document ID: 11024487

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

  Mfr Comm. #:

  23-NA-202

  Date Added:

  October 25, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information on High Voltage Drive Motor Battery - TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV, HUMMER EV/SUV.

  Associated Products (7)

  2025 Cadillac Escalade IQ2025 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-11024487-0001.pdf↗
• May 14, 2025•Document ID: 11023365

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

  Mfr Comm. #:

  18-NA-180

  Date Added:

  September 26, 2025

  Manufacturer:

  GMC

  Summary

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

  Associated Products (21)

  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 Pickup2023 Cadillac Lyriq2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 GMC Hummer EV Pickup2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 GMC Hummer EV Pickup+ 1 more
  Associated Documents

  • DownloadMC-11023365-0001.pdf↗
• May 14, 2025•Document ID: 11018488

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6602B

  Date Added:

  May 20, 2025

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (14)

  2025 Chevrolet Corvette2025 GMC Hummer EV Pickup2024 Chevrolet Corvette2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Hummer EV Pickup2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11018488-0001.pdf↗
• May 9, 2025•Document ID: 11023266

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

  Mfr Comm. #:

  PIE0836

  Date Added:

  September 23, 2025

  Manufacturer:

  CADILLAC

  Summary

  This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) illuminated on the Driver Information Center (DIC) and/or a no-start condition following a recent vehicle update.

  Associated Products (9)

  2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac Lyriq2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11023266-0001.pdf↗
• May 8, 2025•Document ID: 11023051

  Service Bulletin/Repair Instructions
  FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

  Mfr Comm. #:

  25-NA-118

  Date Added:

  September 10, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.

  Associated Products (196)

  2026 Buick Enclave2026 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 Colorado2026 Chevrolet Equinox+ 176 more
  Associated Documents

  • DownloadMC-11023051-0001.pdf↗
• May 8, 2025•Document ID: 11018437

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6367A

  Date Added:

  May 19, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the technicians that this audio concern is a software issue and to not replace any parts at this time.

  Associated Products (17)

  2025 GMC Hummer EV Pickup2024 Chevrolet Corvette2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Hummer EV Pickup2023 GMC Yukon2023 GMC Yukon XL2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Hummer EV Pickup2022 GMC Yukon2022 GMC Yukon XL
  Associated Documents

  • DownloadMC-11018437-0001.pdf↗
• May 6, 2025•Document ID: 11018429

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6369A

  Date Added:

  May 19, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.

  Associated Products (39)

  2025 Chevrolet Corvette2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Corvette2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Buick Envision2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Corvette2023 Chevrolet Suburban+ 19 more
  Associated Documents

  • DownloadMC-11018429-0001.pdf↗
• May 6, 2025•Document ID: 11017910

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N252503100

  Date Added:

  May 6, 2025

  Manufacturer:

  GMC

  Summary

  On certain vehicles listed above, the 12V Battery Negative Cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to inspect and ensure that the High Voltage Service Lockout Harness has the Emergency Cut Loop label installed and the 12V Battery Negative Cable does not have the Emergency Cut Loop label installed.

  Associated Products (5)

  2025 Cadillac Escalade IQ2025 GMC Hummer EV Pickup2024 GMC Hummer EV Pickup2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11017910-0001.pdf↗
• May 6, 2025•Document ID: 11017908

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N242451390-03

  Date Added:

  May 6, 2025

  Manufacturer:

  GMC

  Summary

  On certain vehicles listed above, the 12V Battery Negative Cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to inspect and ensure that the High Voltage Service Lockout Harness has the Emergency Cut Loop label installed and the 12V Battery Negative Cable does not have the Emergency Cut Loop label installed.

  Associated Products (5)

  2025 Cadillac Escalade IQ2025 GMC Hummer EV Pickup2024 GMC Hummer EV Pickup2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11017908-0001.pdf↗
• May 5, 2025•Document ID: 11018426

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6129B

  Date Added:

  May 19, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates a program has been released to fix DTCs U2BF2, U2BF3, and/or U2BF6.

  Associated Products (3)

  2024 GMC Hummer EV Pickup2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11018426-0001.pdf↗
• May 3, 2025•Document ID: 11023058

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIE0834

  Date Added:

  September 10, 2025

  Manufacturer:

  GMC

  Summary

  This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the hood will not latch, open and/or gets stuck, hood ajar message displayed on driver information center (DIC), DTCs P257D, P257E, P257F, B1C80, B1C81, B1C85, B1C89, B1C8C, B1C8D, B1CB5 , B1CBF set.

  Associated Products (6)

  2025 Cadillac Escalade IQ2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2024 GMC Hummer EV Pickup2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11023058-0001.pdf↗
• May 2, 2025•Document ID: 11020260

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  24-NA-029

  Date Added:

  July 7, 2025

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information on HUMMER EV Water Leak Diagnostic Tips.

  Associated Products (4)

  2025 GMC Hummer EV Pickup2024 GMC Hummer EV Pickup2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11020260-0001.pdf↗
• May 1, 2025•Document ID: 11017374

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N232427510-01

  Date Added:

  May 1, 2025

  Manufacturer:

  CADILLAC

  Summary

  Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Powertrain Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.

  Associated Products (37)

  2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Cadillac Lyriq2024 Cadillac XT62024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Cadillac XT6+ 17 more
  Associated Documents

  • DownloadMC-11017374-0001.pdf↗
• April 29, 2025•Document ID: 11019755

  Service Bulletin/Repair Instructions
  AIR BAGS; ELECTRICAL SYSTEM; SEATS

  Mfr Comm. #:

  25-NA-101

  Date Added:

  June 26, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information on the restraint warning lamp being illuminated and the correction to this by replacing the passenger presence module.

  Associated Products (34)

  2025 Cadillac Escalade2025 Chevrolet Colorado2025 Chevrolet Tahoe2025 GMC Canyon2025 GMC Hummer EV Pickup2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Colorado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Canyon2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Colorado2023 Chevrolet Suburban+ 14 more
  Associated Documents

  • DownloadMC-11019755-0001.pdf↗
• April 29, 2025•Document ID: 11017332

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N232427510

  Date Added:

  April 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.

  Associated Products (37)

  2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Cadillac Lyriq2024 Cadillac XT62024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Cadillac XT6+ 17 more
  Associated Documents

  • DownloadMC-11017332-0001.pdf↗
• April 28, 2025•Document ID: 11017780

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6056A

  Date Added:

  May 5, 2025

  Manufacturer:

  CADILLAC

  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 (34)

  2025 Cadillac CT52024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Hummer EV Pickup2023 GMC Yukon2023 GMC Yukon XL2022 Cadillac CT4+ 14 more
  Associated Documents

  • DownloadMC-11017780-0001.pdf↗
• April 25, 2025•Document ID: 11019624

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

  Mfr Comm. #:

  24-NA-143

  Date Added:

  June 18, 2025

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.

  Associated Products (12)

  2026 Cadillac Lyriq2026 Cadillac Vistiq2025 Cadillac Celestiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac Lyriq2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11019624-0001.pdf↗
• April 23, 2025•Document ID: 11019548

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  24-NA-113

  Date Added:

  June 16, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.

  Associated Products (22)

  2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 GMC Terrain2025 Cadillac Celestiq2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Lyriq2024 Cadillac XT42024 GMC Hummer EV Pickup2023 Cadillac Lyriq2023 Chevrolet Colorado2023 GMC Canyon+ 2 more
  Associated Documents

  • DownloadMC-11019548-0001.pdf↗