GMC Sierra Service Bulletins (2021)

1,650 manufacturer communications on file.

• March 2, 2025•Document ID: 11014622

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5966A

  Date Added:

  March 2, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement

  Associated Products (102)

  2024 Cadillac CT42024 Chevrolet Express2024 GMC Savana2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 Chevrolet Express2023 Chevrolet Silverado2023 GMC Canyon2023 GMC Savana2023 GMC Sierra2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Silverado2022 GMC Canyon2022 GMC Savana2022 GMC Sierra+ 82 more
  Associated Documents

  • DownloadMC-11014622-0001.pdf↗
• March 2, 2025•Document ID: 11014621

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5966A

  Date Added:

  March 2, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement

  Associated Products (102)

  2024 Cadillac CT42024 Chevrolet Express2024 GMC Savana2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 Chevrolet Express2023 Chevrolet Silverado2023 GMC Canyon2023 GMC Savana2023 GMC Sierra2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Silverado2022 GMC Canyon2022 GMC Savana2022 GMC Sierra+ 82 more
  Associated Documents

  • DownloadMC-11014621-0001.pdf↗
• February 28, 2025•Document ID: 11014643

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP5901B

  Date Added:

  March 3, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates that the tool for the HD transfer cases to measure clutch pack shim selection is in development.

  Associated Products (12)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-11014643-0001.pdf↗
• February 28, 2025•Document ID: 11014640

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIT5689L

  Date Added:

  March 3, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarily on hold while PIE0572 is active.  PIE0572 has now ended and reinstating the PI.

  Associated Products (14)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11014640-0001.pdf↗
• February 25, 2025•Document ID: 11015409

  Service Bulletin/Repair Instructions
  SUSPENSION; WHEELS

  Mfr Comm. #:

  05-03-07-009L

  Date Added:

  March 8, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.

  Associated Products (432)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Express+ 412 more
  Associated Documents

  • DownloadMC-11015409-0001.pdf↗
• February 22, 2025•Document ID: 11015146

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER; STRUCTURE:BODY

  Mfr Comm. #:

  PIE0818

  Date Added:

  March 6, 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 regard to the outside rearview mirror skull cap missing.

  Associated Products (12)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-11015146-0001.pdf↗
• February 22, 2025•Document ID: 11015387

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  11-00-89-005Y

  Date Added:

  March 8, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).

  Associated Products (457)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Express+ 437 more
  Associated Documents

  • DownloadMC-11015387-0001.pdf↗
• February 22, 2025•Document ID: 11014461

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6344

  Date Added:

  February 25, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue with blower motor speed changing when air flow is blocked by snow.

  Associated Products (41)

  2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Suburban2023 Chevrolet Tahoe+ 21 more
  Associated Documents

  • DownloadMC-11014461-0001.pdf↗
• February 21, 2025•Document ID: 11014457

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT4506H

  Date Added:

  February 25, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician that some owners of Heavy Duty Trucks and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" will ensure the safe handling and ride characteristics of the truck and should not be lowered.

  Associated Products (55)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 Chevrolet Suburban2018 GMC Sierra2017 Chevrolet Silverado2017 Chevrolet Suburban2017 GMC Sierra+ 35 more
  Associated Documents

  • DownloadMC-11014457-0001.pdf↗
• February 21, 2025•Document ID: 11014458

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5734H

  Date Added:

  February 25, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.

  Associated Products (41)

  2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 Chevrolet Suburban+ 21 more
  Associated Documents

  • DownloadMC-11014458-0001.pdf↗
• February 20, 2025•Document ID: 11015042

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  19-NA-129

  Date Added:

  March 5, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides repair information to correct a customer concern of a squeak and/or clunking noise coming from the rear of the vehicle.

  Associated Products (14)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11015042-0001.pdf↗
• February 20, 2025•Document ID: 11015382

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  05-08-51-001L

  Date Added:

  March 8, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.

  Associated Products (457)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Express+ 437 more
  Associated Documents

  • DownloadMC-11015382-0001.pdf↗
• February 20, 2025•Document ID: 11014455

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP5358D

  Date Added:

  February 25, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

  Associated Products (801)

  2025 Chevrolet Silverado2024 Chevrolet Silverado2023 Chevrolet Silverado2022 Buick Enclave2022 Buick Encore2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu+ 781 more
  Associated Documents

  • DownloadMC-11014455-0001.pdf↗
• February 19, 2025•Document ID: 11014579

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; BACK OVER PREVENTION: WARNINGS; STRUCTURE:BODY

  Mfr Comm. #:

  22-NA-068

  Date Added:

  February 28, 2025

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs.

  Associated Products (14)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11014579-0001.pdf↗
• February 18, 2025•Document ID: 11014449

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5744E

  Date Added:

  February 25, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body.

  Associated Products (14)

  2025 Chevrolet Silverado2025 GMC Sierra2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11014449-0001.pdf↗
• February 18, 2025•Document ID: 11014577

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  16-NA-109

  Date Added:

  February 28, 2025

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.

  Associated Products (544)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox+ 524 more
  Associated Documents

  • DownloadMC-11014577-0001.pdf↗
• February 18, 2025•Document ID: 11014450

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5551Q

  Date Added:

  February 25, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting.  This is normal when the FAB has been set to  "Alert".

  Associated Products (232)

  2025 Buick Enclave2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Equinox2025 Chevrolet Malibu2025 Chevrolet Silverado2025 Chevrolet Tahoe2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax+ 212 more
  Associated Documents

  • DownloadMC-11014450-0001.pdf↗
• February 18, 2025•Document ID: 11014448

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6276A

  Date Added:

  February 25, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issues with a service keyless entry message caused by aftermarket door handle covers and they should be removed.

  Associated Products (44)

  2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 Chevrolet Suburban+ 24 more
  Associated Documents

  • DownloadMC-11014448-0001.pdf↗
• February 17, 2025•Document ID: 11014602

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  25-NA-032

  Date Added:

  February 28, 2025

  Manufacturer:

  GMC

  Summary

  This bulletin provides information to the tech on how to diagnosis the EGR system from possible issue that may cause the DTCs to set and cause the customers concern of a MIL Illuminated.

  Associated Products (32)

  2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon2023 GMC Yukon XL2022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Sierra+ 12 more
  Associated Documents

  • DownloadMC-11014602-0001.pdf↗
• February 15, 2025•Document ID: 11014323

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5986C

  Date Added:

  February 18, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates a diagnostic tip for a thump, click, pop, clunk type noise that is heard from the front end.   Dealers are to inspect for something contacting the grill shutters as they open and close.

  Associated Products (30)

  2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Sierra2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2022 Cadillac Escalade2022 Cadillac Escalade ESV+ 10 more
  Associated Documents

  • DownloadMC-11014323-0001.pdf↗