GMC Terrain Service Bulletins (2026)

160 manufacturer communications on file.

• August 21, 2026•Document ID: 11036400

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503D

  Date Added:

  August 27, 2026

  Manufacturer:

  GMC

  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 (27)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Lyriq2025 Cadillac XT42025 Chevrolet Equinox2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Terrain+ 7 more
  Associated Documents

  • DownloadMC-11036400-0001.pdf↗
• 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)

  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-11036392-0001.pdf↗
• August 14, 2026•Document ID: 11036221

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6537

  Date Added:

  August 17, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information describes steps needed to resolve a rattle or vibration from the door panel.

  Associated Products (6)

  2027 Chevrolet Equinox2027 GMC Terrain2026 Chevrolet Equinox2026 GMC Terrain2025 Chevrolet Equinox2025 GMC Terrain
  Associated Documents

  • DownloadMC-11036221-0001.pdf↗
• August 12, 2026•Document ID: 11036219

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503C

  Date Added:

  August 17, 2026

  Manufacturer:

  GMC

  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 (25)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Lyriq2025 Cadillac XT42025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Terrain2025 GMC Yukon2025 GMC Yukon XL+ 5 more
  Associated Documents

  • DownloadMC-11036219-0001.pdf↗
• August 10, 2026•Document ID: 11036212

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6128

  Date Added:

  August 17, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates the potential for shudder and all cylinder misfire concerns on RPO LSD

  Associated Products (4)

  2026 Chevrolet Equinox2026 GMC Terrain2025 Chevrolet Equinox2025 GMC Terrain
  Associated Documents

  • DownloadMC-11036212-0001.pdf↗
• August 5, 2026•Document ID: 11036195

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6368D

  Date Added:

  August 14, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.

  Associated Products (39)

  2026 Buick Enclave2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq+ 19 more
  Associated Documents

  • DownloadMC-11036195-0001.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)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Terrain+ 39 more
  Associated Documents

  • DownloadMC-11036194-0001.pdf↗
• August 1, 2026•Document ID: 11035434

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  19.00

  Date Added:

  August 1, 2026

  Manufacturer:

  GMC

  Summary

  • Smoother vehicle startups in cold temperatures

  Associated Products (2)

  2026 Chevrolet Equinox2026 GMC Terrain
  Associated Documents

  • DownloadMC-11035434-0001.pdf↗
• July 30, 2026•Document ID: 11035710

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6517C

  Date Added:

  August 5, 2026

  Manufacturer:

  CHEVROLET

  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.

  Associated Products (29)

  2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Equinox2027 GMC Terrain2026 Buick Enclave2026 Cadillac Celestiq2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV+ 9 more
  Associated Documents

  • DownloadMC-11035710-0001.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↗
• 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)

  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-11034769-0001.pdf↗
• June 23, 2026•Document ID: 11034081

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.20

  Date Added:

  June 26, 2026

  Manufacturer:

  GMC

  Summary

  • Improvements to the performance of driver assistance features • Fixes to help ensure accurate driver display messages and alerts

  Associated Products (2)

  2026 Chevrolet Equinox2026 GMC Terrain
  Associated Documents

  • DownloadMC-11034081-0001.pdf↗
• June 17, 2026•Document ID: 11034014

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503B

  Date Added:

  June 22, 2026

  Manufacturer:

  GMC

  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 (27)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Lyriq2025 Cadillac XT42025 Chevrolet Equinox2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Terrain+ 7 more
  Associated Documents

  • DownloadMC-11034014-0001.pdf↗
• June 16, 2026•Document ID: 11034038

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N25-252332

  Date Added:

  June 24, 2026

  Manufacturer:

  GMC

  Summary

  • Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super Cruise.

  Associated Products (25)

  2026 Buick Enclave2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Lyriq2026 Cadillac Optiq2026 Chevrolet Equinox2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2025 Buick Enclave2025 Cadillac Celestiq2025 Cadillac CT42025 Cadillac CT52025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Traverse2025 GMC Acadia2024 Cadillac Lyriq+ 5 more
  Associated Documents

  • DownloadMC-11034038-0001.pdf↗
• June 10, 2026•Document ID: 11033990

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6121

  Date Added:

  June 18, 2026

  Manufacturer:

  GMC

  Summary

  This PI communicates a possible speedometer and/or odometer error due to an error in the parts catalog

  Associated Products (6)

  2027 Chevrolet Equinox2027 GMC Terrain2026 Chevrolet Equinox2026 GMC Terrain2025 Chevrolet Equinox2025 GMC Terrain
  Associated Documents

  • DownloadMC-11033990-0001.pdf↗
• June 8, 2026•Document ID: 11033719

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6033B

  Date Added:

  June 8, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to technicians to remove the pulley assembly and inspect the drive chain and pulley surfaces.

  Associated Products (22)

  2027 Buick Encore GX2027 Chevrolet Equinox2027 Chevrolet Trailblazer2027 GMC Terrain2026 Buick Encore GX2026 Chevrolet Equinox2026 Chevrolet Trailblazer2026 GMC Terrain2025 Buick Encore GX2025 Chevrolet Equinox2025 Chevrolet Malibu2025 Chevrolet Trailblazer2025 GMC Terrain2024 Buick Encore GX2024 Chevrolet Malibu2024 Chevrolet Trailblazer2023 Buick Encore GX2023 Chevrolet Malibu2023 Chevrolet Trailblazer2022 Buick Encore GX+ 2 more
  Associated Documents

  • DownloadMC-11033719-0001.pdf↗
• June 5, 2026•Document ID: 11033725

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6031E

  Date Added:

  June 8, 2026

  Manufacturer:

  BUICK

  Summary

  This PI addresses leaks from the case half and provides repair direction to dealer technicians

  Associated Products (22)

  2027 Buick Encore GX2027 Chevrolet Equinox2027 Chevrolet Trailblazer2027 GMC Terrain2026 Buick Encore GX2026 Chevrolet Equinox2026 Chevrolet Trailblazer2026 GMC Terrain2025 Buick Encore GX2025 Chevrolet Equinox2025 Chevrolet Malibu2025 Chevrolet Trailblazer2025 GMC Terrain2024 Buick Encore GX2024 Chevrolet Malibu2024 Chevrolet Trailblazer2023 Buick Encore GX2023 Chevrolet Malibu2023 Chevrolet Trailblazer2022 Buick Encore GX+ 2 more
  Associated Documents

  • DownloadMC-11033725-0001.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↗
• June 3, 2026•Document ID: 11033723

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6032C

  Date Added:

  June 8, 2026

  Manufacturer:

  BUICK

  Summary

  PIP6032B provides diagnostic direction for dealers when encountering transmission leaks

  Associated Products (25)

  2027 Buick Encore GX2027 Chevrolet Equinox2027 Chevrolet Trailblazer2027 GMC Terrain2026 Buick Encore GX2026 Chevrolet Equinox2026 Chevrolet Trailblazer2026 GMC Terrain2025 Buick Encore GX2025 Chevrolet Equinox2025 Chevrolet Malibu2025 Chevrolet Trailblazer2025 GMC Terrain2024 Buick Encore GX2024 Chevrolet Malibu2024 Chevrolet Trailblazer2023 Buick Encore GX2023 Chevrolet Malibu2023 Chevrolet Trailblazer2022 Buick Encore GX+ 5 more
  Associated Documents

  • DownloadMC-11033723-0001.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↗