GMC Sierra Service Bulletins (2020)

1,991 manufacturer communications on file.

• August 17, 2020•Document ID: 10179637

  Service Bulletin/Repair Instructions
  EQUIPMENT; ENGINE

  Mfr Comm. #:

  PIT5666A

  Date Added:

  September 14, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with a noise caused by the engine harness rubbing on the floor pan.  Dealers are to reposition the harness to fix the noise.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10179637-0001.pdf↗
• August 14, 2020•Document ID: 10180697

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  990089019U

  Date Added:

  October 5, 2020

  Manufacturer:

  CADILLAC

  Summary

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

  Associated Products (239)

  2020 Buick Enclave2020 Buick Encore2020 Buick Encore GX2020 Buick Envision2020 Buick Regal2020 Cadillac CT42020 Cadillac CT52020 Cadillac CT62020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet 35002020 Chevrolet 4500HD2020 Chevrolet 5500HD2020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro2020 Chevrolet Colorado+ 219 more
  Associated Documents

  • DownloadMC-10180697-0001.pdf↗
• August 14, 2020•Document ID: 10180317

  Service Bulletin/Repair Instructions
  TIRES

  Mfr Comm. #:

  20NA159

  Date Added:

  September 28, 2020

  Manufacturer:

  CADILLAC

  Summary

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

  Associated Products (345)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Camaro2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 Chevrolet Trailblazer2021 GMC Acadia2021 GMC Canyon+ 325 more
  Associated Documents

  • DownloadMC-10180317-0001.pdf↗
• August 12, 2020•Document ID: 10213747

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, DIESEL

  Mfr Comm. #:

  N202300791

  Date Added:

  June 13, 2022

  Manufacturer:

  GMC

  Summary

  Service Update (population expanded). In some vehicles, equipped with diesel engines, the Diesel Exhaust Fluid (DEF) system may not immediately reactivate, as it should, after the vehicle?s control system finds that a DEF heater fault is no longer present. In these vehicles, after such a fault is detected as absent, DEF system reactivation, including DEF injection, may not occur until the ignition key is cycled. Dealers are to reprogram the reductant control module.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10213747-0001.pdf↗
• August 12, 2020•Document ID: 10179636

  Service Bulletin/Repair Instructions
  EQUIPMENT; POWER TRAIN:AXLE ASSEMBLY

  Mfr Comm. #:

  PIP5653H

  Date Added:

  September 14, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates that engineering has developed a repair for a chirp noise associated with the front axle assembly.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10179636-0001.pdf↗
• August 12, 2020•Document ID: 10179635

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

  Mfr Comm. #:

  PIP5667D

  Date Added:

  September 14, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates the part restriction for the diesel engine air delivery and exhaust system components

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10179635-0001.pdf↗
• August 10, 2020•Document ID: 10180705

  Service Bulletin/Repair Instructions
  VISIBILITY:POWER WINDOW DEVICES AND CONTROLS

  Mfr Comm. #:

  PIE0580

  Date Added:

  October 5, 2020

  Manufacturer:

  GMC

  Summary

  This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a noise coming from the window regulator area.

  Associated Products (4)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10180705-0001.pdf↗
• August 10, 2020•Document ID: 10180293

  Service Bulletin/Repair Instructions
  POWER TRAIN:AUTOMATIC TRANSMISSION

  Mfr Comm. #:

  16NA361

  Date Added:

  September 28, 2020

  Manufacturer:

  CADILLAC

  Summary

  This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed.

  Associated Products (93)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe+ 73 more
  Associated Documents

  • DownloadMC-10180293-0001.pdf↗
• August 6, 2020•Document ID: 10180704

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIE0578A

  Date Added:

  October 5, 2020

  Manufacturer:

  GMC

  Summary

  This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Slow Start and/or No Start, Battery Message Indicated, having to jump start on more then one occasion.

  Associated Products (1)

  2020 GMC Sierra
  Associated Documents

  • DownloadMC-10180704-0001.pdf↗
• August 6, 2020•Document ID: 10180306

  Service Bulletin/Repair Instructions
  SERVICE BRAKES, HYDRAULIC

  Mfr Comm. #:

  20NA020

  Date Added:

  September 28, 2020

  Manufacturer:

  GMC

  Summary

  This technical bulleti provides a procedure to replace the front and rear brake pads if the brakes are squealing.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10180306-0001.pdf↗
• August 6, 2020•Document ID: 10179626

  Service Bulletin/Repair Instructions
  FORWARD COLLISION AVOIDANCE: DYNAMIC BRAKE SUPPORT/BRAKE ASSIST; EQUIPMENT; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5735C

  Date Added:

  September 14, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with a SES MIL and the Brake System Control Module setting false DTC's during shut down.  GM Engineering released updated cals for the BSCM to repair the issue.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10179626-0001.pdf↗
• August 6, 2020•Document ID: 10179625

  Service Bulletin/Repair Instructions
  ENGINE; EQUIPMENT

  Mfr Comm. #:

  PIP5733B

  Date Added:

  September 14, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history.  Under Investigation

  Associated Products (22)

  2021 Cadillac Escalade2021 Chevrolet Equinox2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Terrain2021 GMC Yukon2020 Cadillac CT52020 Cadillac Escalade2020 Chevrolet Corvette2020 Chevrolet Equinox2020 Chevrolet Malibu2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Terrain2020 GMC Yukon+ 2 more
  Associated Documents

  • DownloadMC-10179625-0001.pdf↗
• August 5, 2020•Document ID: 10180299

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

  Mfr Comm. #:

  18NA099

  Date Added:

  September 28, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.

  Associated Products (853)

  2020 Buick Enclave2020 Buick Encore2020 Buick Encore GX2020 Buick Envision2020 Buick Regal2020 Cadillac CT42020 Cadillac CT52020 Cadillac CT62020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet 35002020 Chevrolet 4500HD2020 Chevrolet 5500HD2020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro2020 Chevrolet Colorado+ 833 more
  Associated Documents

  • DownloadMC-10180299-0001.pdf↗
• August 4, 2020•Document ID: 10180702

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIE0576

  Date Added:

  October 5, 2020

  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 a start/stop event or during a normal start using the push button on the dash the vehicle would not crank causing it to not start.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10180702-0001.pdf↗
• August 4, 2020•Document ID: 10180301

  Service Bulletin/Repair Instructions
  VISIBILITY:GLASS, SIDE/REAR

  Mfr Comm. #:

  18NA383

  Date Added:

  September 28, 2020

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides repair information to correct a customer concern of water found in rear interior of cab due to water leak at rear sliding window.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10180301-0001.pdf↗
• July 29, 2020•Document ID: 10178964

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  20NA021

  Date Added:

  August 31, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides repair information to correct a customer concern of Intermittent "Service Steering Column Lock" message displayed with U0155 Set.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10178964-0001.pdf↗
• July 29, 2020•Document ID: 10178395

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5745

  Date Added:

  August 10, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to technicians a possible cause and correction for a P026A

  Associated Products (4)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10178395-0001.pdf↗
• July 29, 2020•Document ID: 10178390

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5742A

  Date Added:

  August 10, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with the engine wiring harness shorting on the ecm mounting bracket and provides repair instructions.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10178390-0001.pdf↗
• July 29, 2020•Document ID: 10178394

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5733A

  Date Added:

  August 10, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history.  Under Investigation

  Associated Products (20)

  2021 Cadillac Escalade2021 Chevrolet Equinox2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2021 GMC Yukon XL2020 Cadillac Escalade2020 Chevrolet Equinox2020 Chevrolet Malibu2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Terrain2020 GMC Yukon2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10178394-0001.pdf↗
• July 28, 2020•Document ID: 10178949

  Service Bulletin/Repair Instructions
  ENGINE; POWER TRAIN

  Mfr Comm. #:

  16NA338

  Date Added:

  August 31, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This 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.

  Associated Products (653)

  2020 Buick Enclave2020 Buick Encore2020 Buick Envision2020 Buick Regal2020 Cadillac CT42020 Cadillac CT52020 Cadillac CT62020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Corvette2020 Chevrolet Equinox2020 Chevrolet Express2020 Chevrolet Impala+ 633 more
  Associated Documents

  • DownloadMC-10178949-0001.pdf↗