GMC Sierra Service Bulletins (2021)

1,650 manufacturer communications on file.

• May 7, 2021•Document ID: 10198862

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  20NA218

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.

  Associated Products (28)

  2021 Buick Encore GX2021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Chevrolet Camaro2021 Chevrolet Equinox2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 Chevrolet Trailblazer2021 GMC Acadia2021 GMC Sierra2021 GMC Terrain2021 GMC Yukon2021 GMC Yukon XL2020 Buick Encore GX2020 Buick Regal2020 Cadillac CT52020 Chevrolet Corvette2020 Chevrolet Equinox+ 8 more
  Associated Documents

  • DownloadMC-10198862-0001.pdf↗
• May 7, 2021•Document ID: 10197284

  Service Bulletin/Repair Instructions
  EQUIPMENT; EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS

  Mfr Comm. #:

  PIT5839A

  Date Added:

  June 14, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to GM dealers that the above mentioned concern is software related and that General Motors is working on a solution.

  Associated Products (18)

  2021 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 Trax2020 GMC Canyon2020 GMC Sierra2020 GMC Terrain
  Associated Documents

  • DownloadMC-10197284-0001.pdf↗
• May 6, 2021•Document ID: 10199272

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  21NA110

  Date Added:

  July 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides information for dealers/technicians on Information on GM Accessories - Instructions on Claim Submission on Dealer-Replaced Tonneau Covers During Warranty Period.

  Associated Products (6)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10199272-0001.pdf↗
• May 6, 2021•Document ID: 10199237

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL

  Mfr Comm. #:

  18NA361

  Date Added:

  July 19, 2021

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.

  Associated Products (20)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Cruze2019 Chevrolet Equinox2019 Chevrolet Silverado2019 GMC Sierra2019 GMC Terrain2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Silverado2018 GMC Sierra2018 GMC Terrain2017 Chevrolet Silverado2017 GMC Sierra2016 Chevrolet Silverado2016 GMC Sierra2015 Chevrolet Cruze2014 Chevrolet Cruze
  Associated Documents

  • DownloadMC-10199237-0001.pdf↗
• May 6, 2021•Document ID: 10198881

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  21NA110

  Date Added:

  July 6, 2021

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information for dealers/technicians on Information on GM Accessories - Instructions on Claim Submission on Dealer-Replaced Tonneau Covers During Warranty Period.

  Associated Products (6)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10198881-0001.pdf↗
• May 6, 2021•Document ID: 10198846

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE

  Mfr Comm. #:

  18NA361

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.

  Associated Products (20)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Cruze2019 Chevrolet Equinox2019 Chevrolet Silverado2019 GMC Sierra2019 GMC Terrain2018 Chevrolet Cruze2018 Chevrolet Equinox2018 Chevrolet Silverado2018 GMC Sierra2018 GMC Terrain2017 Chevrolet Silverado2017 GMC Sierra2016 Chevrolet Silverado2016 GMC Sierra2015 Chevrolet Cruze2014 Chevrolet Cruze
  Associated Documents

  • DownloadMC-10198846-0001.pdf↗
• May 6, 2021•Document ID: 10199249

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  20NA159

  Date Added:

  July 19, 2021

  Manufacturer:

  CADILLAC

  Summary

  This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).

  Associated Products (353)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Silverado+ 333 more
  Associated Documents

  • DownloadMC-10199249-0001.pdf↗
• May 6, 2021•Document ID: 10198858

  Service Bulletin/Repair Instructions
  TIRES

  Mfr Comm. #:

  20NA159

  Date Added:

  July 6, 2021

  Manufacturer:

  GMC

  Summary

  This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).

  Associated Products (353)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Silverado+ 333 more
  Associated Documents

  • DownloadMC-10198858-0001.pdf↗
• May 5, 2021•Document ID: 10200097

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  PIE0602B

  Date Added:

  August 9, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center.

  Associated Products (4)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10200097-0001.pdf↗
• May 5, 2021•Document ID: 10199240

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  19NA129

  Date Added:

  July 19, 2021

  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 (6)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10199240-0001.pdf↗
• May 5, 2021•Document ID: 10198849

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION

  Mfr Comm. #:

  19NA129

  Date Added:

  July 6, 2021

  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 (6)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10198849-0001.pdf↗
• May 4, 2021•Document ID: 10197316

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  N212335340

  Date Added:

  June 14, 2021

  Manufacturer:

  CHEVROLET

  Summary

  Customer Satisfaction Program. Certain vehicles, equipped with a 5.3 L engine, may have a diagnostic calibration in the engine control module (ECM) causing it to stay awake resulting in a parasitic drain on the battery. This could cause diagnostic trouble code (DTC) P0111 and the presence of other low voltage DTC?s. Dealers will update the ECM with the latest calibrations.

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10197316-0001.pdf↗
• May 3, 2021•Document ID: 10199268

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  21NA096

  Date Added:

  July 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to program the ECM to correct the customers concern.

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10199268-0001.pdf↗
• May 3, 2021•Document ID: 10199261

  Service Bulletin/Repair Instructions
  STRUCTURE; SEATS

  Mfr Comm. #:

  21NA079

  Date Added:

  July 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error.

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10199261-0001.pdf↗
• May 3, 2021•Document ID: 10198877

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  21NA096

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to program the ECM to correct the customers concern.

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10198877-0001.pdf↗
• May 3, 2021•Document ID: 10198870

  Service Bulletin/Repair Instructions
  SEATS

  Mfr Comm. #:

  21NA079

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error.

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10198870-0001.pdf↗
• May 3, 2021•Document ID: 10199271

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  21NA109

  Date Added:

  July 19, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides diagnostic information for a customer concern of engine vibration.

  Associated Products (83)

  2021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Chevrolet Camaro2021 Chevrolet Express2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Savana2021 GMC Sierra2021 GMC Yukon2021 GMC Yukon XL2020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Chevrolet Camaro2020 Chevrolet Express2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Savana2020 GMC Sierra+ 63 more
  Associated Documents

  • DownloadMC-10199271-0001.pdf↗
• May 3, 2021•Document ID: 10199265

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION

  Mfr Comm. #:

  21NA091

  Date Added:

  July 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display.

  Associated Products (24)

  2021 Cadillac CT52021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Cadillac XT42021 Chevrolet Corvette2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2021 GMC Yukon XL2020 Cadillac CT42020 Cadillac CT52020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Cadillac XT42020 Chevrolet Bolt EV2020 Chevrolet Corvette2020 Chevrolet Silverado2020 Chevrolet Suburban+ 4 more
  Associated Documents

  • DownloadMC-10199265-0001.pdf↗
• May 3, 2021•Document ID: 10199238

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  19NA044

  Date Added:

  July 19, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.

  Associated Products (519)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Silverado+ 499 more
  Associated Documents

  • DownloadMC-10199238-0001.pdf↗
• May 3, 2021•Document ID: 10198880

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  21NA109

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides diagnostic information for a customer concern of engine vibration.

  Associated Products (83)

  2021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Chevrolet Camaro2021 Chevrolet Express2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Savana2021 GMC Sierra2021 GMC Yukon2021 GMC Yukon XL2020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Chevrolet Camaro2020 Chevrolet Express2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Savana2020 GMC Sierra+ 63 more
  Associated Documents

  • DownloadMC-10198880-0001.pdf↗