GMC Sierra Service Bulletins

10,018 manufacturer communications on file.

• October 20, 2026•Document ID: 11038843

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Energy 2026.3

  Date Added:

  November 1, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improved reliability for propulsion and acceleration

  Associated Products (4)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11038843-0001.pdf↗
• October 20, 2026•Document ID: 11038742

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6139

  Date Added:

  October 29, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information advises dealers that Engine Control Module designation E94 is on an ordering restriction through technical assistance.

  Associated Products (2)

  2027 Chevrolet Silverado2027 GMC Sierra
  Associated Documents

  • DownloadMC-11038742-0001.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.

  Associated Products (29)

  2026 Chevrolet Silverado2026 GMC Sierra2025 Chevrolet Corvette2025 Chevrolet Silverado2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Sierra2024 Chevrolet Corvette2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 BrightDrop Zevo2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe+ 9 more
  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)

  2025 Chevrolet Blazer2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11038814-0001.pdf↗
• October 16, 2026•Document ID: 11038594

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6559

  Date Added:

  October 20, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communicates the fact that multiple parts for this vehicle are on a part restriction. Dealers are directed to check EPC for restriction notes and that it will require additional processes to obtain a restricted part.

  Associated Products (2)

  2027 Chevrolet Silverado2027 GMC Sierra
  Associated Documents

  • DownloadMC-11038594-0001.pdf↗
• October 15, 2026•Document ID: 11038589

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6136

  Date Added:

  October 19, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information informs dealers that the 2027 5.7L (L76) and 6.6L (L78) engines are on an exchange program. Dealers are instructed to contact the Product Quality Center to order an engine assembly.

  Associated Products (2)

  2027 Chevrolet Silverado2027 GMC Sierra
  Associated Documents

  • DownloadMC-11038589-0001.pdf↗
• October 15, 2026•Document ID: 11038468

  Service Campaign
  ENGINE

  Mfr Comm. #:

  N262576260

  Date Added:

  October 15, 2026

  Manufacturer:

  GMC

  Summary

  General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust leak at the catalytic converter inlet. Dealers are to replace the catalytic converter inlet clamp and to inspect the catalytic converter – replacing it if damage is observed. The repairs will be made at no charge to the customer.

  Associated Products (2)

  2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11038468-0001.pdf↗
• October 12, 2026•Document ID: 11038824

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Energy 2026.3

  Date Added:

  November 1, 2026

  Manufacturer:

  GMC

  Summary

  • Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages

  Associated Products (8)

  2025 Cadillac Lyriq2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Sierra2024 Cadillac Lyriq2024 Chevrolet Equinox2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11038824-0001.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.

  Associated Products (42)

  2027 Cadillac Escalade2027 Cadillac Escalade ESV2027 Cadillac Optiq2027 Chevrolet Equinox2027 Chevrolet Tahoe2026 Buick Envision2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Optiq2026 Chevrolet BrightDrop2026 Chevrolet Corvette2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 GMC Sierra2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Lyriq+ 22 more
  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.

  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↗
• October 5, 2026•Document ID: 11038837

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Assisted Driving 2026.3

  Date Added:

  November 1, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Improved guidance for Lane Centering Assistance in the driver display • System changes to support future improvements

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11038837-0001.pdf↗
• October 5, 2026•Document ID: 11038825

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  663.40

  Date Added:

  November 1, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11038825-0001.pdf↗
• October 5, 2026•Document ID: 11038463

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6127B

  Date Added:

  October 14, 2026

  Manufacturer:

  GMC

  Summary

  This document assists GM dealer technicians with diagnosing torque converter concerns to ensure torque converter replacement is necessary. The torque converter part number will be placed on order restriction, and the technician will be asked to follow 25-NA-148 before requesting a part through PQC.

  Associated Products (20)

  2026 Chevrolet Colorado2026 Chevrolet Silverado2026 GMC Canyon2025 Chevrolet Colorado2025 Chevrolet Silverado2025 GMC Canyon2024 Chevrolet Colorado2024 Chevrolet Silverado2024 GMC Canyon2023 Chevrolet Colorado2023 Chevrolet Silverado2023 GMC Canyon2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11038463-0001.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

  Associated Products (69)

  2027 Cadillac Escalade2027 Cadillac Escalade ESV2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Chevrolet Silverado2027 Chevrolet Suburban2027 Chevrolet Tahoe2027 GMC Sierra2027 GMC Yukon2027 GMC Yukon XL2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Sierra+ 49 more
  Associated Documents

  • DownloadMC-11038139-0001.pdf↗
• October 3, 2026•Document ID: 11038817

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  663.10

  Date Added:

  October 31, 2026

  Manufacturer:

  GMC

  Summary

  • Better responsiveness for the driver display and rear-view camera • Infotainment system improvements for media, navigation, device switching, head-up display, and comfort controls • Updates to enable memory seat buttons to be linked to a user profile. Up to two user profiles can be linked to your vehicle's memory seat buttons. • After this update, you may need to turn your Turn Signal Activated View setting back on

  Associated Products (2)

  2026 Chevrolet Silverado2026 GMC Sierra
  Associated Documents

  • DownloadMC-11038817-0001.pdf↗
• October 2, 2026•Document ID: 11038164

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6554

  Date Added:

  October 6, 2026

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information is to help technicians decide if the DTC needs to be diagnosed if relating to the concern and if it is not, the DTC can be ignored.

  Associated Products (18)

  2027 Cadillac Escalade2027 Cadillac Escalade ESV2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Chevrolet Silverado2027 Chevrolet Suburban2027 Chevrolet Tahoe2027 GMC Hummer EV Pickup2027 GMC Hummer EV SUV2027 GMC Sierra2027 GMC Yukon2027 GMC Yukon XL2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 GMC Yukon2026 GMC Yukon XL
  Associated Documents

  • DownloadMC-11038164-0001.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.

  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-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↗