Chevrolet Express Service Bulletins (2021)

643 manufacturer communications on file.

• June 28, 2021•Document ID: 10200149

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

  Mfr Comm. #:

  21NA152

  Date Added:

  August 9, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers/technicians on glass ultraviolet (UV) Ray protection and tint percentage.

  Associated Products (459)

  2022 Buick Encore2022 Buick Encore GX2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet 35002022 Chevrolet 4500HD2022 Chevrolet 5500HD2022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Silverado2022 Chevrolet Spark+ 439 more
  Associated Documents

  • DownloadMC-10200149-0001.pdf↗
• June 28, 2021•Document ID: 10200127

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)

  Mfr Comm. #:

  21NA115

  Date Added:

  August 9, 2021

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information for dealers/technicians on Available ECM Calibration to Activate High Idle Mode for Fleet Vehicles

  Associated Products (2)

  2021 Chevrolet Express2021 GMC Savana
  Associated Documents

  • DownloadMC-10200127-0001.pdf↗
• June 21, 2021•Document ID: 10200151

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

  Mfr Comm. #:

  010842001N

  Date Added:

  August 9, 2021

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.

  Associated Products (939)

  2022 Buick Encore2022 Buick Encore GX2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Silverado2022 Chevrolet Spark2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer+ 919 more
  Associated Documents

  • DownloadMC-10200151-0001.pdf↗
• June 16, 2021•Document ID: 10201285

  Service Bulletin/Repair Instructions
  TIRES:SIDEWALL

  Mfr Comm. #:

  PIT4261G

  Date Added:

  September 13, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles with tire sidewall irregularities. This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.

  Associated Products (408)

  2021 Buick Enclave2021 Buick Encore2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Spark2021 Chevrolet Suburban2021 Chevrolet Tahoe+ 388 more
  Associated Documents

  • DownloadMC-10201285-0001.pdf↗
• June 16, 2021•Document ID: 10200184

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:HOSES/VALVES/SENSORS; EQUIPMENT:OTHER:LABELS

  Mfr Comm. #:

  N212336951

  Date Added:

  August 9, 2021

  Manufacturer:

  GMC

  Summary

  Emission Recall. On certain vehicles, The Vehicle Emissions Control Information (VECI) label may not contain the correct OBD (On-Board Diagnostic) system identifier. Since a new label can be easily installed, and to reduce customer inconvenience, the label will be sent directly to customers of record along with the installation instructions. Customers may install the label or, if they desire, they may take the label to their dealer for installation at no charge.

  Associated Products (2)

  2021 Chevrolet Express2021 GMC Savana
  Associated Documents

  • DownloadMC-10200184-0001.pdf↗
• June 15, 2021•Document ID: 10201281

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL:ACCESSORY GENERATOR:CONTROLS

  Mfr Comm. #:

  PIP5632E

  Date Added:

  September 13, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.

  Associated Products (408)

  2021 Buick Enclave2021 Buick Encore2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Silverado2021 Chevrolet Spark2021 Chevrolet Suburban2021 Chevrolet Tahoe+ 388 more
  Associated Documents

  • DownloadMC-10201281-0001.pdf↗
• June 15, 2021•Document ID: 10200154

  Service Bulletin/Repair Instructions
  POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT

  Mfr Comm. #:

  990420002L

  Date Added:

  August 9, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.

  Associated Products (471)

  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+ 451 more
  Associated Documents

  • DownloadMC-10200154-0001.pdf↗
• June 10, 2021•Document ID: 10200137

  Service Bulletin/Repair Instructions
  COMMUNICATION: VEHICLE TO INFRASTRUCTURE

  Mfr Comm. #:

  21NA135

  Date Added:

  August 9, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

  Associated Products (108)

  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+ 88 more
  Associated Documents

  • DownloadMC-10200137-0001.pdf↗
• June 7, 2021•Document ID: 10200152

  Service Bulletin/Repair Instructions
  EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN

  Mfr Comm. #:

  080730035E

  Date Added:

  August 9, 2021

  Manufacturer:

  BUICK

  Summary

  This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.

  Associated Products (692)

  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+ 672 more
  Associated Documents

  • DownloadMC-10200152-0001.pdf↗
• June 4, 2021•Document ID: 10201268

  Service Bulletin/Repair Instructions
  STRUCTURE; STRUCTURE:BODY:BUMPERS:ACTIVE SHUTTERS/GRILL

  Mfr Comm. #:

  PIT5039D

  Date Added:

  September 13, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that the customer or up-fitter may have removed the rear bumper, install a different rear bumper, or add a different box/flat bed/cube box/hitch, etc. to the rear of the truck, which affects the rear park assist operation. Technician can disable the rear park assist for this concern.

  Associated Products (34)

  2021 Chevrolet Express2021 GMC Savana2020 Chevrolet Express2020 GMC Savana2019 Chevrolet Express2019 GMC Savana2018 Chevrolet Express2018 GMC Savana2017 Chevrolet Express2017 GMC Savana2016 Chevrolet Express2016 GMC Savana2015 Chevrolet Express2015 GMC Savana2014 Chevrolet Express2014 Chevrolet Silverado2014 GMC Savana2014 GMC Sierra2013 Chevrolet Express2013 Chevrolet Silverado+ 14 more
  Associated Documents

  • DownloadMC-10201268-0001.pdf↗
• June 4, 2021•Document ID: 10199284

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY:BUMPERS

  Mfr Comm. #:

  PIT5039D

  Date Added:

  July 19, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that the customer or up-fitter may have removed the rear bumper, install a different rear bumper, or add a different box/flat bed/cube box/hitch, etc. to the rear of the truck, which affects the rear park assist operation. Technician can disable the rear park assist for this concern.

  Associated Products (34)

  2021 Chevrolet Express2021 GMC Savana2020 Chevrolet Express2020 GMC Savana2019 Chevrolet Express2019 GMC Savana2018 Chevrolet Express2018 GMC Savana2017 Chevrolet Express2017 GMC Savana2016 Chevrolet Express2016 GMC Savana2015 Chevrolet Express2015 GMC Savana2014 Chevrolet Express2014 Chevrolet Silverado2014 GMC Savana2014 GMC Sierra2013 Chevrolet Express2013 Chevrolet Silverado+ 14 more
  Associated Documents

  • DownloadMC-10199284-0001.pdf↗
• June 3, 2021•Document ID: 10200153

  Service Bulletin/Repair Instructions
  EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  110089002E

  Date Added:

  August 9, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on GM Accessories ? Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.

  Associated Products (299)

  2022 Buick Encore2022 Buick Encore GX2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Bolt EUV2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Silverado2022 Chevrolet Spark2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer+ 279 more
  Associated Documents

  • DownloadMC-10200153-0001.pdf↗
• May 27, 2021•Document ID: 10200089

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  070089037Q

  Date Added:

  August 9, 2021

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (651)

  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 4500XD2021 Chevrolet 5500HD2021 Chevrolet 5500XD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado+ 631 more
  Associated Documents

  • DownloadMC-10200089-0001.pdf↗
• May 26, 2021•Document ID: 10197312

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EXTERIOR LIGHTING

  Mfr Comm. #:

  PIT5125F

  Date Added:

  June 14, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about vehicles proper operation of the stop and/or turn signals. For vehicles without Regular Production Option Code V4D circuit 618 is for the left stop and turn signal and circuit 619 dark green is for the right stop and turn signal. For vehicles with Regular Production Option Code V4D circuit 618 yellow is for the left turn signal only. Circuit 619 dark green is for the right turn signal only and circuit 1320 light blue is for the stop lamps only.

  Associated Products (26)

  2021 Chevrolet Express2021 GMC Savana2020 Chevrolet Express2020 GMC Savana2019 Chevrolet Express2019 GMC Savana2018 Chevrolet Express2018 GMC Savana2017 Chevrolet Express2017 GMC Savana2016 Chevrolet Express2016 GMC Savana2015 Chevrolet Express2015 GMC Savana2014 Chevrolet Express2014 GMC Savana2013 Chevrolet Express2013 GMC Savana2012 Chevrolet Express2012 GMC Savana+ 6 more
  Associated Documents

  • DownloadMC-10197312-0001.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 25, 2021•Document ID: 10197310

  Service Bulletin/Repair Instructions
  SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; SERVICE BRAKES, HYDRAULIC

  Mfr Comm. #:

  PIT5058G

  Date Added:

  June 14, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about the operation and diagnostics of the Regular Production Option Code UJ1 brake warning pressure warning system. The technician can test the operation of the brake warning system. If the warning system does not function correctly, technician will need to inspect circuit 33 for a short to ground between X141 and the Instrument Panel Cluster terminal 14. Then inspect check circuit 33 for an open between X141 and the Instrument Panel Cluster terminal 14. Also technician should check male side of X141 circuit 33 with an ohm meter to ground and should be close to 0 ohms with engine off and key on. Start engine and circuit should go (OL) indicating that the flow switch opened. Then, turn the steering to the stop in pressure relief and verify that the circuit stays (OL) to check the operation of the pressure switch.

  Associated Products (28)

  2021 Chevrolet Express2021 GMC Savana2020 Chevrolet Express2020 GMC Savana2019 Chevrolet Express2019 GMC Savana2018 Chevrolet Express2018 GMC Savana2017 Chevrolet Express2017 GMC Savana2016 Chevrolet Express2016 GMC Savana2015 Chevrolet Express2015 GMC Savana2014 Chevrolet Express2014 GMC Savana2013 Chevrolet Express2013 GMC Savana2012 Chevrolet Express2012 GMC Savana+ 8 more
  Associated Documents

  • DownloadMC-10197310-0001.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 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↗