GMC Sierra Service Bulletins (2021)

1,650 manufacturer communications on file.

• October 25, 2022•Document ID: 10225708

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

  Mfr Comm. #:

  15-NA-087

  Date Added:

  November 3, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin advises the technician to rest the MIL and diagnose additional DTCs for why the code is setting and disabling the start/stop system.

  Associated Products (95)

  2023 Buick Enclave2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 Chevrolet Traverse2023 GMC Acadia2022 Buick Enclave2022 Buick Encore2022 Buick Envision2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 Chevrolet Equinox2022 Chevrolet Malibu2022 Chevrolet Silverado2022 Chevrolet Traverse+ 75 more
  Associated Documents

  • DownloadMC-10225708-0001.pdf↗
• October 20, 2022•Document ID: 10225662

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  21-NA-138

  Date Added:

  November 3, 2022

  Manufacturer:

  GMC

  Summary

  This service bulletin provides a repair procedure to correct a customer concern of a Squeak, Grind or Clunking Noise from Rear Leaf Springs.

  Associated Products (16)

  2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra2016 Chevrolet Silverado2016 GMC Sierra2015 Chevrolet Silverado2015 GMC Sierra
  Associated Documents

  • DownloadMC-10225662-0001.pdf↗
• October 19, 2022•Document ID: 10226385

  Service Bulletin/Repair Instructions
  POWER TRAIN; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  PIP5845A

  Date Added:

  November 21, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic Transmission Fluid Cooling Exchanger. The dealer should refer to bulletin 08-07-30-035 for the recommended components that should be replaced in the transmission and to flush the engine cooling system following service information.

  Associated Products (12)

  2022 Cadillac Escalade ESV2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Sierra2022 GMC Yukon XL2021 Cadillac Escalade ESV2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon XL
  Associated Documents

  • DownloadMC-10226385-0001.pdf↗
• October 19, 2022•Document ID: 10225615

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  22-NA-205

  Date Added:

  November 2, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on Module Harvesting.

  Associated Products (943)

  2023 BrightDrop Zevo2023 Buick Enclave2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 Chevrolet Camaro2023 Chevrolet Corvette2023 Chevrolet Equinox2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 Chevrolet Traverse2023 GMC Acadia2023 GMC Hummer EV Pickup+ 923 more
  Associated Documents

  • DownloadMC-10225615-0001.pdf↗
• October 18, 2022•Document ID: 10226384

  Service Bulletin/Repair Instructions
  POWER TRAIN; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  PIP5175E

  Date Added:

  November 21, 2022

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed.

  Associated Products (74)

  2022 Chevrolet Colorado2022 Chevrolet Silverado2022 GMC Canyon2021 Chevrolet Colorado2021 Chevrolet Silverado2021 GMC Canyon2021 GMC Sierra2020 Cadillac Escalade2020 Chevrolet Colorado2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Canyon2020 GMC Sierra2020 GMC Yukon XL2019 Cadillac Escalade2019 Chevrolet Colorado2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe+ 54 more
  Associated Documents

  • DownloadMC-10226384-0001.pdf↗
• October 18, 2022•Document ID: 10226382

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  PIT3665L

  Date Added:

  November 21, 2022

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.

  Associated Products (133)

  2023 Chevrolet Express2023 Chevrolet Silverado2023 GMC Savana2023 GMC Sierra2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Silverado2022 GMC Savana2022 GMC Sierra2021 Chevrolet Express2021 Chevrolet Silverado2021 GMC Savana2021 GMC Sierra2020 Chevrolet Express2020 Chevrolet Silverado2020 GMC Savana2020 GMC Sierra2019 Chevrolet Express2019 Chevrolet Silverado2019 Chevrolet Suburban+ 113 more
  Associated Documents

  • DownloadMC-10226382-0001.pdf↗
• October 18, 2022•Document ID: 10225612

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  22-NA-085

  Date Added:

  November 2, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues.

  Associated Products (24)

  2022 Chevrolet Colorado2022 Chevrolet Silverado2022 Chevrolet Trax2022 GMC Canyon2022 GMC Sierra2021 Chevrolet Colorado2021 Chevrolet Equinox2021 Chevrolet Silverado2021 Chevrolet Trax2021 GMC Canyon2021 GMC Sierra2021 GMC Terrain2020 Chevrolet Blazer2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Equinox2020 Chevrolet Malibu2020 Chevrolet Silverado2020 Chevrolet Sonic2020 Chevrolet Trax+ 4 more
  Associated Documents

  • DownloadMC-10225612-0001.pdf↗
• October 17, 2022•Document ID: 10225608

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  22-NA-201

  Date Added:

  November 2, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides repair information to correct a customer concern of MIL L5P ECM/TCM Update with DTCs Set.

  Associated Products (4)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10225608-0001.pdf↗
• October 17, 2022•Document ID: 10226379

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

  Mfr Comm. #:

  PIT5940A

  Date Added:

  November 21, 2022

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates that a customer may notice that the gridlines on the backup camera are very dim. They may mention that this occurred after an OTA update. The dealer technician is advised to perform no repairs. The technician is advised that engineering is looking into a resolution and the resolution will be communicated through this PI or a bulletin when it becomes available.

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  Associated Documents

  • DownloadMC-10226379-0001.pdf↗
• October 14, 2022•Document ID: 10226370

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION

  Mfr Comm. #:

  PIT5955

  Date Added:

  November 21, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates and issue when driving at highway speeds (above 60 mph) that there is a noise from the rear seat area that could be described as a buffering, pulsing, vibrating, roaring, booming type noise. Dealers are to fill the C pillar cavities with sound deadening material to correct the issue.

  Associated Products (10)

  2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10226370-0001.pdf↗
• October 13, 2022•Document ID: 10226369

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL

  Mfr Comm. #:

  PIT5702D

  Date Added:

  November 21, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communication provides information to the technician on installing Regular Production Option Code 9L7 Up-fitter Auxiliary Switches. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 153. The information can be found at http://www.gmupfitter.com/ under the "Technical Bulletin" Tab and then "Show all bulletins."

  Associated Products (10)

  2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10226369-0001.pdf↗
• October 10, 2022•Document ID: 10224856

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

  Mfr Comm. #:

  21-NA-149

  Date Added:

  October 28, 2022

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.

  Associated Products (20)

  2022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Sierra2022 GMC Yukon2022 GMC Yukon XL2021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2021 GMC Yukon XL2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10224856-0001.pdf↗
• October 10, 2022•Document ID: 10224850

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL

  Mfr Comm. #:

  21-NA-006

  Date Added:

  October 28, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This bulletin provides a possible location of a bad connection at the reductant fluid tanks electrical connector.

  Associated Products (18)

  2022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Chevrolet Silverado2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Sierra2022 GMC Yukon2022 GMC Yukon XL2021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2021 GMC Yukon XL2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10224850-0001.pdf↗
• October 7, 2022•Document ID: 10226364

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION:DISPLAY FUNCTION

  Mfr Comm. #:

  PIT5897A

  Date Added:

  November 21, 2022

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to dealer of a possible concern with a display and the actions needed to correct the concern.

  Associated Products (10)

  2022 Chevrolet Colorado2022 Chevrolet Silverado2022 GMC Canyon2022 GMC Sierra2021 Chevrolet Colorado2021 Chevrolet Silverado2021 GMC Canyon2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10226364-0001.pdf↗
• October 7, 2022•Document ID: 10224820

  Service Bulletin/Repair Instructions
  EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

  Mfr Comm. #:

  10-00-89-006I

  Date Added:

  October 28, 2022

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).

  Associated Products (1040)

  2023 Buick Enclave2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 Chevrolet Camaro2023 Chevrolet Corvette2023 Chevrolet Equinox2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 Chevrolet Traverse2023 GMC Acadia2023 GMC Hummer EV Pickup2023 GMC Sierra+ 1020 more
  Associated Documents

  • DownloadMC-10224820-0001.pdf↗
• October 6, 2022•Document ID: 10222648

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION: CAMERA SYSTEM

  Mfr Comm. #:

  N212356230

  Date Added:

  October 7, 2022

  Manufacturer:

  CHEVROLET

  Summary

  Certain vehicles may have a condition where the Front Camera Module (FCM) becomes unresponsive and generates a Diagnostic Trouble Code (DTC). Dealers are to re-program the FCM with the latest software available.

  Associated Products (5)

  2022 Chevrolet Equinox2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10222648-0001.pdf↗
• October 4, 2022•Document ID: 10224831

  Service Bulletin/Repair Instructions
  STRUCTURE

  Mfr Comm. #:

  99-00-89-019X

  Date Added:

  October 28, 2022

  Manufacturer:

  GMC

  Summary

  This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.

  Associated Products (381)

  2023 BrightDrop Zevo2023 Buick Enclave2023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer2023 Chevrolet Bolt EUV2023 Chevrolet Bolt EV2023 Chevrolet Camaro2023 Chevrolet Corvette2023 Chevrolet Equinox2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 Chevrolet Traverse2023 GMC Acadia2023 GMC Hummer EV Pickup+ 361 more
  Associated Documents

  • DownloadMC-10224831-0001.pdf↗
• October 3, 2022•Document ID: 10222263

  Service Bulletin/Repair Instructions
  VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

  Mfr Comm. #:

  N222375000

  Date Added:

  October 3, 2022

  Manufacturer:

  CHEVROLET

  Summary

  In certain vehicles, equipped with a manual HVAC system (RPO: C4P), the K33 HVAC Control Module may not properly enable the heater auxiliary coolant pump to maintain cabin heater temperature during engine auto stop events. Reprogram the K33 HVAC Control Module with updated software.

  Associated Products (6)

  2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10222263-0001.pdf↗
• October 3, 2022•Document ID: 10226356

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5882

  Date Added:

  November 21, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates diagnostic aid to help isolate possible repeat thermal by-pass valve concern.

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  2021 Chevrolet Express2021 Chevrolet Silverado2021 GMC Savana2021 GMC Sierra2020 Chevrolet Express2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Savana2020 GMC Sierra2020 GMC Yukon XL2019 Chevrolet Express2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Savana2019 GMC Sierra2019 GMC Yukon2018 Chevrolet Express2018 Chevrolet Silverado+ 33 more
  Associated Documents

  • DownloadMC-10226356-0001.pdf↗
• September 29, 2022•Document ID: 10222842

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  PIE0665C

  Date Added:

  October 13, 2022

  Manufacturer:

  CHEVROLET

  Summary

  This engineering information (EI) closure ends the need for further information from the field in regards to Service Engine Soon (SES) Lamp illuminated and/or “Service Emissions System” message on the Driver Information Center (DIC).

  Associated Products (8)

  2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10222842-0001.pdf↗