Chevrolet Blazer Service Bulletins (2020)

856 manufacturer communications on file.

• May 25, 2021•Document ID: 10198848

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION

  Mfr Comm. #:

  19NA076

  Date Added:

  July 6, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides repair information to correct a customer concern of Blue or Black Screen and Service Rear Vision System Message on Radio Display Shifting into Reverse.

  Associated Products (24)

  2020 Buick Enclave2020 Buick Encore GX2020 Cadillac CT62020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro2020 Chevrolet Equinox2020 Chevrolet Silverado2020 Chevrolet Traverse2020 GMC Acadia2020 GMC Sierra2020 GMC Terrain2019 Buick LaCrosse2019 Cadillac CT62019 Cadillac XT42019 Chevrolet Blazer2019 Chevrolet Camaro+ 4 more
  Associated Documents

  • DownloadMC-10198848-0001.pdf↗
• May 25, 2021•Document ID: 10199281

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER

  Mfr Comm. #:

  21NA124

  Date Added:

  July 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

  Associated Products (773)

  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 35002021 Chevrolet 4500HD2021 Chevrolet 5500HD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox+ 753 more
  Associated Documents

  • DownloadMC-10199281-0001.pdf↗
• May 25, 2021•Document ID: 10198890

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  21NA124

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

  Associated Products (773)

  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 35002021 Chevrolet 4500HD2021 Chevrolet 5500HD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox+ 753 more
  Associated Documents

  • DownloadMC-10198890-0001.pdf↗
• May 24, 2021•Document ID: 10199244

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  19NA256

  Date Added:

  July 19, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides diagnostic aid procedure to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine.

  Associated Products (193)

  2021 Buick Enclave2021 Cadillac CT52021 Cadillac XT52021 Chevrolet Blazer2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Traverse2021 GMC Acadia2021 GMC Canyon2020 Buick Enclave2020 Buick Regal2020 Cadillac CT52020 Cadillac CT62020 Cadillac XT52020 Chevrolet Blazer2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Impala2020 Chevrolet Traverse2020 GMC Acadia+ 173 more
  Associated Documents

  • DownloadMC-10199244-0001.pdf↗
• May 24, 2021•Document ID: 10198853

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  19NA256

  Date Added:

  July 6, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides diagnostic aid procedure to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine.

  Associated Products (193)

  2021 Buick Enclave2021 Cadillac CT52021 Cadillac XT52021 Chevrolet Blazer2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Traverse2021 GMC Acadia2021 GMC Canyon2020 Buick Enclave2020 Buick Regal2020 Cadillac CT52020 Cadillac CT62020 Cadillac XT52020 Chevrolet Blazer2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Impala2020 Chevrolet Traverse2020 GMC Acadia+ 173 more
  Associated Documents

  • DownloadMC-10198853-0001.pdf↗
• May 21, 2021•Document ID: 10199235

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  18NA306

  Date Added:

  July 19, 2021

  Manufacturer:

  GMC

  Summary

  This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).

  Associated Products (396)

  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+ 376 more
  Associated Documents

  • DownloadMC-10199235-0001.pdf↗
• May 21, 2021•Document ID: 10198844

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  18NA306

  Date Added:

  July 6, 2021

  Manufacturer:

  BUICK

  Summary

  This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).

  Associated Products (396)

  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+ 376 more
  Associated Documents

  • DownloadMC-10198844-0001.pdf↗
• May 19, 2021•Document ID: 10199278

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  21NA118

  Date Added:

  July 19, 2021

  Manufacturer:

  CADILLAC

  Summary

  This technical bulletin provides a procedure to align the exhaust causing a vibration.

  Associated Products (8)

  2021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 GMC Acadia2020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 GMC Acadia
  Associated Documents

  • DownloadMC-10199278-0001.pdf↗
• May 19, 2021•Document ID: 10198887

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  21NA118

  Date Added:

  July 6, 2021

  Manufacturer:

  CADILLAC

  Summary

  This technical bulletin provides a procedure to align the exhaust causing a vibration.

  Associated Products (8)

  2021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 GMC Acadia2020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 GMC Acadia
  Associated Documents

  • DownloadMC-10198887-0001.pdf↗
• May 17, 2021•Document ID: 10200090

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  100089006H

  Date Added:

  August 9, 2021

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (849)

  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+ 829 more
  Associated Documents

  • DownloadMC-10200090-0001.pdf↗
• May 17, 2021•Document ID: 10200088

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  070089037P

  Date Added:

  August 9, 2021

  Manufacturer:

  GMC

  Summary

  This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.

  Associated Products (636)

  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 35002021 Chevrolet 4500HD2021 Chevrolet 5500HD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox+ 616 more
  Associated Documents

  • DownloadMC-10200088-0001.pdf↗
• May 17, 2021•Document ID: 10197300

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5843

  Date Added:

  June 14, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates that a vehicle may come to the dealer with concerns of various warning messages, possibly the door locks cycling, passive entry inoperative or other concerns. The technician is instructed to inspect G401 for loose or missing terminals.

  Associated Products (2)

  2021 Chevrolet Blazer2020 Chevrolet Blazer
  Associated Documents

  • DownloadMC-10197300-0001.pdf↗
• May 12, 2021•Document ID: 10199234

  Service Bulletin/Repair Instructions
  LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM

  Mfr Comm. #:

  18NA279

  Date Added:

  July 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.

  Associated Products (74)

  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 Camaro2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Spark2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 Chevrolet Trailblazer2021 Chevrolet Traverse+ 54 more
  Associated Documents

  • DownloadMC-10199234-0001.pdf↗
• May 12, 2021•Document ID: 10198843

  Service Bulletin/Repair Instructions
  LATCHES/LOCKS/LINKAGES

  Mfr Comm. #:

  18NA279

  Date Added:

  July 6, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.

  Associated Products (74)

  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 Camaro2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Spark2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 Chevrolet Trailblazer2021 Chevrolet Traverse+ 54 more
  Associated Documents

  • DownloadMC-10198843-0001.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: 10197283

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5720A

  Date Added:

  June 14, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates that a possible trans fluid leak found may only be residual fluid that was left during the assembly process with no repairs needed if no dye is detected after cleaning and re-evaluation.

  Associated Products (10)

  2020 Buick Encore GX2020 Buick Regal2020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 Chevrolet Equinox2020 Chevrolet Malibu2020 GMC Acadia2020 GMC Terrain
  Associated Documents

  • DownloadMC-10197283-0001.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: 10197282

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  PIP5804

  Date Added:

  June 14, 2021

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates the possibility of a inaccurate #1 Coolant Temperature Sensor causing the engine to run hot or overheat with possible over temperature message displayed on DIC

  Associated Products (13)

  2021 Cadillac CT42021 Cadillac CT52021 Cadillac XT42021 Cadillac XT52021 Chevrolet Blazer2021 GMC Acadia2020 Cadillac CT42020 Cadillac CT52020 Cadillac XT42020 Cadillac XT52020 Chevrolet Blazer2020 GMC Acadia2019 Cadillac XT4
  Associated Documents

  • DownloadMC-10197282-0001.pdf↗
• May 4, 2021•Document ID: 10197281

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  PIP5257E

  Date Added:

  June 14, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses. Also updated to include ALL HFV6 engines Gen1 and Gen2.

  Associated Products (142)

  2020 Buick Enclave2020 Cadillac CT52020 Cadillac CT62020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Impala2020 Chevrolet Traverse2020 GMC Acadia2020 GMC Canyon2019 Buick Enclave2019 Buick LaCrosse2019 Cadillac ATS2019 Cadillac CT62019 Cadillac CTS2019 Cadillac XT52019 Cadillac XTS2019 Chevrolet Blazer+ 122 more
  Associated Documents

  • DownloadMC-10197281-0001.pdf↗