GMC Sierra Service Bulletins (2021)

1,650 manufacturer communications on file.

• February 7, 2024•Document ID: 10250505

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

  Mfr Comm. #:

  19-NA-044

  Date Added:

  February 21, 2024

  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 (629)

  2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Express2024 Chevrolet Malibu2024 Chevrolet Silverado2024 Chevrolet Suburban+ 609 more
  Associated Documents

  • DownloadMC-10250505-0001.pdf↗
• February 7, 2024•Document ID: 10250503

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  16-NA-222

  Date Added:

  February 21, 2024

  Manufacturer:

  GMC

  Summary

  This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.

  Associated Products (595)

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  Associated Documents

  • DownloadMC-10250503-0001.pdf↗
• February 6, 2024•Document ID: 10251685

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  PIT5479F

  Date Added:

  March 18, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.

  Associated Products (82)

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  Associated Documents

  • DownloadMC-10251685-0001.pdf↗
• February 5, 2024•Document ID: 10250507

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

  Mfr Comm. #:

  22-NA-150

  Date Added:

  February 23, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset.

  Associated Products (35)

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  Associated Documents

  • DownloadMC-10250507-0001.pdf↗
• February 2, 2024•Document ID: 10251681

  Service Bulletin/Repair Instructions
  TIRES

  Mfr Comm. #:

  PIT4506G

  Date Added:

  March 18, 2024

  Manufacturer:

  GMC

  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 (54)

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  Associated Documents

  • DownloadMC-10251681-0001.pdf↗
• February 2, 2024•Document ID: 10250347

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

  Mfr Comm. #:

  16-NA-338

  Date Added:

  February 17, 2024

  Manufacturer:

  GMC

  Summary

  This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.

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  Associated Documents

  • DownloadMC-10250347-0001.pdf↗
• January 31, 2024•Document ID: 10250007

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL

  Mfr Comm. #:

  PIT6097C

  Date Added:

  February 12, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue where the vehicles wireless charger no longer works with certain ISO updates on Apple 15 phones and advises customer to update their phone to the lastest ISO update.

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  Associated Documents

  • DownloadMC-10250007-0001.pdf↗
• January 30, 2024•Document ID: 10250003

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY:TAILGATE

  Mfr Comm. #:

  PIT6119

  Date Added:

  February 12, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue where the minor tailgate will not open due to an aftermarket device installed on the vehicle.

  Associated Products (10)

  2024 Chevrolet Silverado2024 GMC Sierra2023 Chevrolet Silverado2023 GMC Sierra2022 Chevrolet Silverado2022 GMC Sierra2021 Chevrolet Silverado2021 GMC Sierra2020 GMC Sierra2019 GMC Sierra
  Associated Documents

  • DownloadMC-10250003-0001.pdf↗
• January 30, 2024•Document ID: 10250002

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5702E

  Date Added:

  February 12, 2024

  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-10250002-0001.pdf↗
• January 30, 2024•Document ID: 10250276

  Service Bulletin/Repair Instructions
  EQUIPMENT; ELECTRICAL SYSTEM

  Mfr Comm. #:

  23-NA-055

  Date Added:

  February 14, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.

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  Associated Documents

  • DownloadMC-10250276-0001.pdf↗
• January 30, 2024•Document ID: 10250001

  Service Bulletin/Repair Instructions
  EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

  Mfr Comm. #:

  PIT5734G

  Date Added:

  February 12, 2024

  Manufacturer:

  GMC

  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.

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  Associated Documents

  • DownloadMC-10250001-0001.pdf↗
• January 29, 2024•Document ID: 10249999

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5810B

  Date Added:

  February 12, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development.

  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-10249999-0001.pdf↗
• January 29, 2024•Document ID: 10250278

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EQUIPMENT

  Mfr Comm. #:

  23-NA-189

  Date Added:

  February 14, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present on network communication circuits.

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  Associated Documents

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• January 26, 2024•Document ID: 10250258

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  23-NA-214

  Date Added:

  February 14, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides Information on Purge Pump Part Replacement and Purge pump Part Number Interchangeability.

  Associated Products (69)

  2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Silverado2024 Chevrolet Trailblazer2024 Chevrolet Traverse2024 Chevrolet Trax2024 GMC Acadia2024 GMC Canyon2024 GMC Sierra2023 Buick Encore GX2023 Buick Envision2023 Cadillac CT4+ 49 more
  Associated Documents

  • DownloadMC-10250258-0001.pdf↗
• January 25, 2024•Document ID: 10250249

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

  Mfr Comm. #:

  21-NA-132

  Date Added:

  February 14, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides Changes to the Automatic Stop/Start feature for Certain 2021 Escalade models, Silverado 1500, Suburban, Tahoe, Sierra 1500, Yukon models Equipped with RPO NSS.

  Associated Products (16)

  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 XL
  Associated Documents

  • DownloadMC-10250249-0001.pdf↗
• January 22, 2024•Document ID: 10250250

  Service Bulletin/Repair Instructions
  POWER TRAIN; EQUIPMENT

  Mfr Comm. #:

  21-NA-238

  Date Added:

  February 14, 2024

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides a procedure to inspect the front pump of the transmission for a possible leak.

  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-10250250-0001.pdf↗
• January 19, 2024•Document ID: 10249713

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

  Mfr Comm. #:

  22-NA-112

  Date Added:

  February 5, 2024

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides repair information to correct a customer concern of 2020 - 2022 Silverado and Sierra Equipped with Diesel Engine Setting DTCs P20BB or P20C3.

  Associated Products (6)

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  Associated Documents

  • DownloadMC-10249713-0001.pdf↗
• January 18, 2024•Document ID: 10250244

  Service Bulletin/Repair Instructions
  STRUCTURE

  Mfr Comm. #:

  PI0281K

  Date Added:

  February 14, 2024

  Manufacturer:

  GMC

  Summary

  This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.

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• January 18, 2024•Document ID: 10249745

  Service Bulletin/Repair Instructions
  STRUCTURE

  Mfr Comm. #:

  19-NA-255

  Date Added:

  February 6, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).

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  Associated Documents

  • DownloadMC-10249745-0001.pdf↗
• January 18, 2024•Document ID: 10249743

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  22-NA-246

  Date Added:

  February 6, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin advises the technician that the possible cause may not be from a faulty clutch piston or extension housing and to perform testing on transmission for other possible issues, but it still may be possible on high mileage vehicles that orifices in housing may have come dislodged, causing the same customer concern.

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  • DownloadMC-10249743-0001.pdf↗