GMC Sierra Service Bulletins (2025)

766 manufacturer communications on file.

• October 26, 2026•Document ID: 11038684

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  N262565450

  Date Added:

  October 26, 2026

  Manufacturer:

  GMC

  Summary

  Customer Satisfaction Program. Certain vehicles listed above may have a condition in which remanufactured high voltage battery packs were built using modules that were ineligible for reuse and require a second replacement. Dealers will replace the high voltage battery.

  Associated Products (19)

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  Associated Documents

  • DownloadMC-11038684-0001.pdf↗
• October 24, 2026•Document ID: 11038744

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6368F

  Date Added:

  October 29, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener and to replace the opener with a new updated part.

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  Associated Documents

  • DownloadMC-11038744-0001.pdf↗
• October 24, 2026•Document ID: 11038743

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6140

  Date Added:

  October 29, 2026

  Manufacturer:

  GMC

  Summary

  Vehicles may display a MIL or “Service High Voltage” message, with DTC P061B stored as current or history. The condition may be caused by a software anomaly and may clear after a vehicle sleep cycle. install the lasted program.

  Associated Products (9)

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  Associated Documents

  • DownloadMC-11038743-0001.pdf↗
• October 19, 2026•Document ID: 11038591

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6558

  Date Added:

  October 19, 2026

  Manufacturer:

  CADILLAC

  Summary

  Squeaking or creaking noise from the rear upper front control arm bushing, over bumps or when turning.

  Associated Products (9)

  2026 Cadillac Escalade2026 Cadillac Escalade IQL2026 Chevrolet Silverado2026 GMC Sierra2025 Cadillac Escalade2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11038591-0001.pdf↗
• October 17, 2026•Document ID: 11038596

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6602Y

  Date Added:

  October 20, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

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  Associated Documents

  • DownloadMC-11038596-0001.pdf↗
• October 16, 2026•Document ID: 11038814

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Infotainment 2026.3

  Date Added:

  October 31, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • More responsive map controls when switching views • Trailer Theft Alert settings are saved between drives • More reliable access to on-screen controls for temperature, fan speed, and heated seats • Improvements that help prevent the center display from freezing or unexpectedly losing audio

  Associated Products (8)

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  Associated Documents

  • DownloadMC-11038814-0001.pdf↗
• October 8, 2026•Document ID: 11038821

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Gateway 2026.3

  Date Added:

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

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  Associated Documents

  • DownloadMC-11038821-0001.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.

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  Associated Documents

  • DownloadMC-11038460-0001.pdf↗
• October 5, 2026•Document ID: 11038139

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6477D

  Date Added:

  October 6, 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

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  Associated Documents

  • DownloadMC-11038139-0001.pdf↗
• October 1, 2026•Document ID: 11037675

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N262567130

  Date Added:

  October 1, 2026

  Manufacturer:

  GMC

  Summary

  Certain vehicles may have an Owner’s Manual that contains incorrect information regarding the vehicle’s tires. Vehicle owners will be mailed an insert to include in their Owner’s Manual. For vehicles in dealer inventory, dealers will install the insert.

  Associated Products (1)

  2025 GMC Sierra
  Associated Documents

  • DownloadMC-11037675-0001.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.

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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.

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  Associated Documents

  • DownloadMC-11038132-0001.pdf↗
• September 28, 2026•Document ID: 11037797

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6368E

  Date Added:

  October 2, 2026

  Manufacturer:

  GMC

  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.

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  Associated Documents

  • DownloadMC-11037797-0001.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.

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  Associated Documents

  • DownloadMC-11037555-0001.pdf↗
• September 21, 2026•Document ID: 11037551

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6549

  Date Added:

  September 29, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information communicates an issue with a service column lock message and DTC U3000. Engineering is working on the issue and in the meantime dealerships are to reset/clear the DTC and perform four sleep cycles to verify the DTC does not return.

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  Associated Documents

  • DownloadMC-11037551-0001.pdf↗
• September 15, 2026•Document ID: 11037446

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6426C

  Date Added:

  September 22, 2026

  Manufacturer:

  GMC

  Summary

  If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.

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  Associated Documents

  • DownloadMC-11037446-0001.pdf↗
• September 15, 2026•Document ID: 11037445

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6545A

  Date Added:

  September 22, 2026

  Manufacturer:

  GMC

  Summary

  This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly.

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  Associated Documents

  • DownloadMC-11037445-0001.pdf↗
• September 10, 2026•Document ID: 11037320

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629F

  Date Added:

  September 16, 2026

  Manufacturer:

  BUICK

  Summary

  This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

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  Associated Documents

  • DownloadMC-11037320-0001.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.

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  Associated Documents

  • DownloadMC-11037253-0001.pdf↗
• September 3, 2026•Document ID: 11037255

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6543

  Date Added:

  September 10, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information communicates a diagnostic tip for the tailgate release system and tailgate ajar message.

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  Associated Documents

  • DownloadMC-11037255-0001.pdf↗