GMC Sierra Service Bulletins (2021)

1,650 manufacturer communications on file.

• May 3, 2021•Document ID: 10198874

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION

  Mfr Comm. #:

  21NA091

  Date Added:

  July 6, 2021

  Manufacturer:

  CADILLAC

  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-10198874-0001.pdf↗
• May 3, 2021•Document ID: 10198847

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  19NA044

  Date Added:

  July 6, 2021

  Manufacturer:

  CHEVROLET

  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-10198847-0001.pdf↗
• April 30, 2021•Document ID: 10194117

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  21NA106

  Date Added:

  May 24, 2021

  Manufacturer:

  GMC

  Summary

  This informational bulletin advises the technician to verify the TCM is asleep before trying to repair the transmission in order for all the codes to be re-set.

  Associated Products (10)

  2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade2021 Cadillac Escalade ESV2021 Chevrolet Colorado2021 Chevrolet Express2021 Chevrolet Silverado2021 GMC Canyon2021 GMC Savana2021 GMC Sierra
  Associated Documents

  • DownloadMC-10194117-0001.pdf↗
• April 30, 2021•Document ID: 10194079

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  16NA338

  Date Added:

  May 24, 2021

  Manufacturer:

  CHEVROLET

  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.

  Associated Products (685)

  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+ 665 more
  Associated Documents

  • DownloadMC-10194079-0001.pdf↗
• April 29, 2021•Document ID: 10193477

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5748F

  Date Added:

  May 17, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.

  Associated Products (8)

  2021 Cadillac Escalade ESV2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon XL2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10193477-0001.pdf↗
• April 27, 2021•Document ID: 10193475

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  PIT5839

  Date Added:

  May 17, 2021

  Manufacturer:

  GMC

  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-10193475-0001.pdf↗
• April 26, 2021•Document ID: 10195152

  Service Bulletin/Repair Instructions
  POWER TRAIN; SERVICE BRAKES

  Mfr Comm. #:

  PIE0615A

  Date Added:

  June 7, 2021

  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 on a tick and/or ping type noise heard from the Propeller Shaft during acceleration and/or braking.

  Associated Products (6)

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

  • DownloadMC-10195152-0001.pdf↗
• April 26, 2021•Document ID: 10194110

  Service Bulletin/Repair Instructions
  EQUIPMENT:APPLIANCE:ELECTRIC WATER HEATER

  Mfr Comm. #:

  21NA097

  Date Added:

  May 24, 2021

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides a procedure to install a pice of foam between the heater core pipes to correct the customers concern.

  Associated Products (14)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra2016 Chevrolet Silverado2016 GMC Sierra2015 Chevrolet Silverado2015 GMC Sierra
  Associated Documents

  • DownloadMC-10194110-0001.pdf↗
• April 23, 2021•Document ID: 10195150

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  070842006P

  Date Added:

  June 7, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.

  Associated Products (30)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra2016 Chevrolet Silverado2016 GMC Sierra2015 Chevrolet Silverado2015 GMC Sierra2014 Chevrolet Silverado2014 GMC Sierra2013 Chevrolet Silverado2013 GMC Sierra2012 Chevrolet Silverado2012 GMC Sierra+ 10 more
  Associated Documents

  • DownloadMC-10195150-0001.pdf↗
• April 23, 2021•Document ID: 10193470

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  PIT5809A

  Date Added:

  May 17, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issues with a pop, clunk, knock, rattle type noise heard from the steering column over bumps and ask dealerships to replace the upper column shaft.

  Associated Products (4)

  2021 Chevrolet Silverado2021 GMC Sierra2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10193470-0001.pdf↗
• April 23, 2021•Document ID: 10194114

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  21NA103

  Date Added:

  May 24, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information regarding Witness Marks from Panel Adjustments Made During Manufacturing and that it is considered a normal condition.

  Associated Products (389)

  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 4500XD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu+ 369 more
  Associated Documents

  • DownloadMC-10194114-0001.pdf↗
• April 23, 2021•Document ID: 10194090

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  20NA218

  Date Added:

  May 24, 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-10194090-0001.pdf↗
• April 23, 2021•Document ID: 10193473

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5776C

  Date Added:

  May 17, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates that a vehicle may exhibit a misfire condition resulting in misfire codes P0300-P308. Upon diagnosis it may be discovered the lifter has come apart.  It is recommended to replace the lifter guide and the four lifters.

  Associated Products (10)

  2021 Cadillac Escalade2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10193473-0001.pdf↗
• April 22, 2021•Document ID: 10194107

  Service Bulletin/Repair Instructions
  SERVICE BRAKES, AIR:DISC:CALIPER

  Mfr Comm. #:

  21NA089

  Date Added:

  May 24, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a procedure to replace the rear calipers if found packed for of mud and debris.

  Associated Products (6)

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

  • DownloadMC-10194107-0001.pdf↗
• April 22, 2021•Document ID: 10193466

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5836

  Date Added:

  May 17, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates and issue with the park assist off message or unwanted/false parking assist alerts and provide diagnostics tip for dealership to inspect the parking assist sensor/bezel mounting in the front and rear bumpers

  Associated Products (6)

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

  • DownloadMC-10193466-0001.pdf↗
• April 22, 2021•Document ID: 10195126

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  000601026N

  Date Added:

  June 7, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.

  Associated Products (468)

  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 4500XD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu+ 448 more
  Associated Documents

  • DownloadMC-10195126-0001.pdf↗
• April 21, 2021•Document ID: 10193465

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5677E

  Date Added:

  May 17, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers may comment on any of the following concerns: - SES MIL - No Start - No Crank - Engine runs rough - Reduced engine power - Erratic speedo - Blown Fuse(s): F46UA, F47UA, F51UA, F78UA, F85UA, F86UA, F87UA, and/or F90UA When checking for DTC's any combination may be found: C15AA P001A P2B00 P2B01 P2B03 P2B96 P001B P003D P0107 P018C P01E5 P01E6 P01E7 P0237 P0340 P0341 P0355 P0365 P037C P03F0 P0521 P0522 P0532 P0616 P077C P07BF P0707 P1101 P112F P146D P159F p16A0 p16A2 P171B P2122 P26E5 P2812 P2814 P2B53 P2C05 P2C08 P2C09 P2C0C P2C0D P2C10 P2C12 P2C15 P2C16 P2C19 P305E P3084 P3089 P308E P3093 P3094 P3095 P3098 P30B0 P30B3 P30CF U0073 U0100 U0101 U0140 U0644 U0672

  Associated Products (6)

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

  • DownloadMC-10193465-0001.pdf↗
• April 21, 2021•Document ID: 10193464

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5775B

  Date Added:

  May 17, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealership technicians that a P11D5  may be cause by a software anomaly,  check to see if campaign N212331790 applies, reflash the ECM and release the vehicle.

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10193464-0001.pdf↗
• April 19, 2021•Document ID: 10193460

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5788A

  Date Added:

  May 17, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates Some customers may comment that the SES lamp is illuminated or was Illuminated and turned off, with no driveabilty concerns. During inspection Technician may notice DTC P2635. Unknown at this time engineering is working on this concern

  Associated Products (2)

  2021 Chevrolet Silverado2021 GMC Sierra
  Associated Documents

  • DownloadMC-10193460-0001.pdf↗
• April 19, 2021•Document ID: 10193458

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5752L

  Date Added:

  May 17, 2021

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and  engine noise with possible of DTC P0300 P0106 P0506,  Possible valve spring concern

  Associated Products (11)

  2021 Cadillac Escalade2021 Chevrolet Camaro2021 Chevrolet Silverado2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Sierra2021 GMC Yukon2020 Chevrolet Camaro2020 Chevrolet Corvette2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10193458-0001.pdf↗