GMC Sierra Service Bulletins (2021)

1,650 manufacturer communications on file.

• August 27, 2024•Document ID: 11008898

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  24-NA-174

  Date Added:

  October 10, 2024

  Manufacturer:

  CHEVROLET

  Summary

  The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.

  Associated Products (648)

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  Associated Documents

  • DownloadMC-11008898-0001.pdf↗
• August 26, 2024•Document ID: 11006621

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  General Communication

  Date Added:

  August 26, 2024

  Manufacturer:

  CHEVROLET

  Summary

  Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

  Associated Products (1209)

  2025 Buick Enclave2025 Buick Encore2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Cadillac XT62025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Terrain2024 BrightDrop Zevo2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX+ 1189 more
  Associated Documents

  • DownloadMC-11006621-0001.pdf↗
• August 22, 2024•Document ID: 11007936

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  05-03-08-002J

  Date Added:

  September 20, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.

  Associated Products (825)

  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 XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 805 more
  Associated Documents

  • DownloadMC-11007936-0001.pdf↗
• August 22, 2024•Document ID: 11007935

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  05-03-08-002J

  Date Added:

  September 20, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.

  Associated Products (825)

  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 XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 805 more
  Associated Documents

  • DownloadMC-11007935-0001.pdf↗
• August 19, 2024•Document ID: 11008906

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  18-NA-073

  Date Added:

  October 11, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.

  Associated Products (638)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 Chevrolet Trailblazer+ 618 more
  Associated Documents

  • DownloadMC-11008906-0001.pdf↗
• August 16, 2024•Document ID: 11006487

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIT5689H

  Date Added:

  August 16, 2024

  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 (12)

  2024 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-11006487-0001.pdf↗
• August 16, 2024•Document ID: 11006486

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP5991

  Date Added:

  August 16, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer technician to reference the electronic parts catalog to check the EGR valve part number that was installed.

  Associated Products (14)

  2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra
  Associated Documents

  • DownloadMC-11006486-0001.pdf↗
• August 16, 2024•Document ID: 11006456

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5990

  Date Added:

  August 16, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates a part restriction for certain MY 2.7 L3B service engines

  Associated Products (11)

  2022 Cadillac CT42022 Chevrolet Silverado2022 GMC Sierra2021 Cadillac CT42021 Chevrolet Silverado2021 GMC Sierra2020 Cadillac CT42020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11006456-0001.pdf↗
• August 16, 2024•Document ID: 11007721

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  23-NA-044

  Date Added:

  September 11, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on AGM batteries that require less frequent charging in storage.

  Associated Products (521)

  2025 Buick Enclave2025 Buick Encore2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Cadillac XT62025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Sierra2025 GMC Terrain2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX+ 501 more
  Associated Documents

  • DownloadMC-11007721-0001.pdf↗
• August 16, 2024•Document ID: 11006500

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5481J

  Date Added:

  August 16, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist. Starting with 2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.

  Associated Products (59)

  2024 Cadillac Escalade2024 Chevrolet Blazer2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2023 Cadillac Escalade2023 Chevrolet Blazer2023 Chevrolet Silverado2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon2022 Cadillac Escalade2022 Chevrolet Blazer2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Sierra2022 GMC Yukon+ 39 more
  Associated Documents

  • DownloadMC-11006500-0001.pdf↗
• August 16, 2024•Document ID: 11006497

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT6110B

  Date Added:

  August 16, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is working on a fix.

  Associated Products (24)

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  Associated Documents

  • DownloadMC-11006497-0001.pdf↗
• August 16, 2024•Document ID: 11006495

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6036A

  Date Added:

  August 16, 2024

  Manufacturer:

  CHEVROLET

  Summary

  his Preliminary information communicates an issue that when an engine mount is replaced there may be additional parts replaced along with the engine mount and dealership are to reference the parts catalog to determine if additional parts are needed.

  Associated Products (12)

  2022 Chevrolet Silverado2022 GMC Sierra2021 Cadillac Escalade ESV2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-11006495-0001.pdf↗
• August 16, 2024•Document ID: 11006460

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  PIT5918B

  Date Added:

  August 16, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix is available.

  Associated Products (5)

  2022 GMC Sierra2022 GMC Yukon2021 GMC Sierra2021 GMC Yukon2020 GMC Sierra
  Associated Documents

  • DownloadMC-11006460-0001.pdf↗
• August 15, 2024•Document ID: 11007430

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  18-NA-150

  Date Added:

  September 7, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on 6.6L Duramax Possible Oil Leak Path Information.

  Associated Products (17)

  2025 Chevrolet Silverado2024 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 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra
  Associated Documents

  • DownloadMC-11007430-0001.pdf↗
• August 15, 2024•Document ID: 11007429

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  17-NA-374

  Date Added:

  September 7, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin advises the technician of how the Soot information has changed from grams to percentage.

  Associated Products (17)

  2025 Chevrolet Silverado2024 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 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra
  Associated Documents

  • DownloadMC-11007429-0001.pdf↗
• August 15, 2024•Document ID: 11006399

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5811A

  Date Added:

  August 15, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with the out of park signal, used by upfitters, being inoperative.  Dealers are to reprogram the BCM with updated cals to enable the upfitter out of park signal.

  Associated Products (6)

  2024 Chevrolet Silverado2024 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-11006399-0001.pdf↗
• August 14, 2024•Document ID: 11006357

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5832P

  Date Added:

  August 14, 2024

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.

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  2024 BrightDrop Zevo2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Canyon2024 GMC Hummer EV Pickup2024 GMC Sierra2024 GMC Yukon+ 35 more
  Associated Documents

  • DownloadMC-11006357-0001.pdf↗
• August 13, 2024•Document ID: 11006322

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  PIT6177

  Date Added:

  August 13, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issues of the left rear leaf spring making a squeaking noise due to diesel fuel contamination that may occur during refueling after the fuel nozzle is removed from the fuel filler pipe.  Dealers are to create a foam seal around the fuel filler pipe to prevent fuel from leaking onto the left spring.

  Associated Products (10)

  2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-11006322-0001.pdf↗
• August 13, 2024•Document ID: 11006276

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5926C

  Date Added:

  August 13, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates that the t-case input seal, and/or the o-ring most likely is the source of the leak between the transmission and the t-case.

  Associated Products (10)

  2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-11006276-0001.pdf↗
• August 13, 2024•Document ID: 11006324

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  PIP5865C

  Date Added:

  August 13, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates the possibility of DTC P30BF failing on low mile vehicles due to the possibility of the cylinder 1/2 sliding barrel binding on intake camshaft.

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  Associated Documents

  • DownloadMC-11006324-0001.pdf↗