Chevrolet Trailblazer Service Bulletins (2023)

485 manufacturer communications on file.

• October 16, 2026•Document ID: 11038592

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6626B

  Date Added:

  October 19, 2026

  Manufacturer:

  BUICK

  Summary

  PI created to guide technicians through radio restriction process

  Associated Products (29)

  2026 Chevrolet Blazer2026 Chevrolet Traverse2026 Chevrolet Trax2025 Chevrolet Blazer2025 Chevrolet Malibu2025 Chevrolet Traverse2025 Chevrolet Trax2024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Traverse2024 Chevrolet Trax2024 GMC Terrain2023 Buick Encore GX2023 Chevrolet Blazer2023 Chevrolet Equinox2023 Chevrolet Malibu2023 Chevrolet Trailblazer2023 Chevrolet Traverse2023 GMC Acadia+ 9 more
  Associated Documents

  • DownloadMC-11038592-0001.pdf↗
• October 7, 2026•Document ID: 11038460

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6110L

  Date Added:

  October 14, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

  Associated Products (84)

  2027 Buick Encore GX2027 Chevrolet Trailblazer2026 Buick Encore GX2026 Buick Envision2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac XT52026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Express2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Trailblazer2026 GMC Canyon2026 GMC Savana2026 GMC Sierra2026 GMC Yukon+ 64 more
  Associated Documents

  • DownloadMC-11038460-0001.pdf↗
• September 28, 2026•Document ID: 11038136

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6457C

  Date Added:

  October 5, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.

  Associated Products (173)

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  Associated Documents

  • DownloadMC-11038136-0001.pdf↗
• September 28, 2026•Document ID: 11038132

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6540K

  Date Added:

  October 5, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealers a procedure to reset the radio.

  Associated Products (173)

  2027 Buick Enclave2027 Buick Encore GX2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Blazer2027 Chevrolet Bolt EV2027 Chevrolet Corvette2027 Chevrolet Equinox2027 Chevrolet Suburban2027 Chevrolet Tahoe2027 Chevrolet Trailblazer2027 Chevrolet Traverse2027 GMC Acadia2027 GMC Sierra2027 GMC Terrain2027 GMC Yukon2027 GMC Yukon XL+ 153 more
  Associated Documents

  • DownloadMC-11038132-0001.pdf↗
• September 26, 2026•Document ID: 11037555

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5698F

  Date Added:

  September 30, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

  Associated Products (619)

  2027 Buick Enclave2027 Buick Encore GX2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Blazer2027 Chevrolet Bolt EV2027 Chevrolet Corvette2027 Chevrolet Equinox2027 Chevrolet Suburban2027 Chevrolet Tahoe2027 Chevrolet Trailblazer2027 Chevrolet Traverse2027 GMC Acadia2027 GMC Sierra2027 GMC Terrain2027 GMC Yukon2027 GMC Yukon XL+ 599 more
  Associated Documents

  • DownloadMC-11037555-0001.pdf↗
• September 4, 2026•Document ID: 11037253

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902W

  Date Added:

  September 10, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

  Associated Products (751)

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  Associated Documents

  • DownloadMC-11037253-0001.pdf↗
• September 4, 2026•Document ID: 11037252

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5995B

  Date Added:

  September 10, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information provides the dealer information of the location of the rear seat child anchors.

  Associated Products (19)

  2026 Buick Encore GX2026 Buick Envista2026 Chevrolet Trailblazer2026 Chevrolet Trax2025 Buick Encore GX2025 Buick Envista2025 Chevrolet Trailblazer2025 Chevrolet Trax2024 Buick Encore GX2024 Buick Envista2024 Chevrolet Trailblazer2024 Chevrolet Trax2023 Buick Encore GX2023 Chevrolet Trailblazer2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer2020 Buick Encore GX
  Associated Documents

  • DownloadMC-11037252-0001.pdf↗
• August 28, 2026•Document ID: 11036693

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6196A

  Date Added:

  September 2, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information provides a diagnostic tip for diagnosing an issue with Cruise Control, Adaptive Cruise and Lane Keep Assist Turns Off or Inoperative.

  Associated Products (13)

  2026 Buick Encore GX2026 Chevrolet Trailblazer2025 Buick Encore GX2025 Chevrolet Trailblazer2024 Buick Encore GX2024 Chevrolet Trailblazer2023 Buick Encore GX2023 Chevrolet Trailblazer2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer2020 Buick Encore GX
  Associated Documents

  • DownloadMC-11036693-0001.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

  Associated Products (233)

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  Associated Documents

  • DownloadMC-11036392-0001.pdf↗
• July 31, 2026•Document ID: 11035696

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6589B

  Date Added:

  August 4, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the techicians a diagnostic tip if a customer has a complaint of a whistle/wind noise at highway speeds.

  Associated Products (6)

  2026 Chevrolet Trailblazer2025 Chevrolet Trailblazer2024 Chevrolet Trailblazer2023 Chevrolet Trailblazer2022 Chevrolet Trailblazer2021 Chevrolet Trailblazer
  Associated Documents

  • DownloadMC-11035696-0001.pdf↗
• July 28, 2026•Document ID: 11035693

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6110K

  Date Added:

  August 4, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.

  Associated Products (84)

  2027 Buick Encore GX2027 Chevrolet Trailblazer2026 Buick Encore GX2026 Buick Envision2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac XT52026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Express2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Trailblazer2026 GMC Canyon2026 GMC Savana2026 GMC Sierra2026 GMC Yukon+ 64 more
  Associated Documents

  • DownloadMC-11035693-0001.pdf↗
• July 23, 2026•Document ID: 11035349

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6548B

  Date Added:

  July 30, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the technician the direction needed when encountering an issue with switching between adaptive cruise control and regular cruise control or an issue with automatic high beam feature after the front camera was replaced.

  Associated Products (19)

  2026 Buick Encore GX2026 Buick Envista2026 Chevrolet Trailblazer2026 Chevrolet Trax2025 Buick Encore GX2025 Buick Envista2025 Chevrolet Trailblazer2025 Chevrolet Trax2024 Buick Encore GX2024 Buick Envista2024 Chevrolet Trailblazer2024 Chevrolet Trax2023 Buick Encore GX2023 Chevrolet Trailblazer2022 Buick Encore GX2022 Chevrolet Trailblazer2021 Buick Encore GX2021 Chevrolet Trailblazer2020 Buick Encore GX
  Associated Documents

  • DownloadMC-11035349-0001.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 (505)

  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 BrightDrop+ 485 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 (232)

  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 BrightDrop+ 212 more
  Associated Documents

  • DownloadMC-11034769-0001.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:

  CHEVROLET

  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: 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 (28)

  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+ 8 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:

  CHEVROLET

  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 (170)

  2027 Chevrolet Bolt EV2027 Chevrolet Corvette2026 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 BrightDrop+ 150 more
  Associated Documents

  • DownloadMC-11033150-0001.pdf↗
• May 14, 2026•Document ID: 11032784

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6540J

  Date Added:

  May 19, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealers a procedure to reset the radio.

  Associated Products (153)

  2027 Chevrolet Bolt EV2026 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 Blazer+ 133 more
  Associated Documents

  • DownloadMC-11032784-0001.pdf↗
• May 11, 2026•Document ID: 11032767

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6540H

  Date Added:

  May 19, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to dealers a procedure to reset the radio.

  Associated Products (153)

  2027 Chevrolet Bolt EV2026 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 Blazer+ 133 more
  Associated Documents

  • DownloadMC-11032767-0001.pdf↗