GMC Sierra Service Bulletins (2020)

1,991 manufacturer communications on file.

• May 28, 2020•Document ID: 10176613

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  19NA218

  Date Added:

  June 22, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides a service procedure to correct a condition of Ticking Noise from the Engine.

  Associated Products (21)

  2020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Chevrolet Camaro2020 Chevrolet Corvette2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Yukon2020 GMC Yukon XL2019 Cadillac CTS2019 Cadillac Escalade2019 Cadillac Escalade ESV2019 Chevrolet Camaro2019 Chevrolet Corvette2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Sierra2019 GMC Yukon+ 1 more
  Associated Documents

  • DownloadMC-10176613-0001.pdf↗
• May 27, 2020•Document ID: 10176822

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:WIRING; ENGINE

  Mfr Comm. #:

  N192287840

  Date Added:

  June 29, 2020

  Manufacturer:

  CHEVROLET

  Summary

  Service Update - Certain vehicles equipped with a 2.7L turbo engine (RPO L3B), may have a condition where the engine wiring harness may have been wrapped and/or routed incorrectly, creating the potential for wear-through in several locations. If this occurred it could allow the engine harness to short to ground and/or be severed, which may lead to a check engine light, reduced engine power, no start condition or in rare cases a stall. Dealers are to inspect harness for correct tape wrapping and install engine harness sleeves.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10176822-0001.pdf↗
• May 27, 2020•Document ID: 10176650

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  140604004G

  Date Added:

  June 22, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin explains the normal noises an engine may make when the ambient temperature outside is cold or the vehicle has sat for a few hours.

  Associated Products (64)

  2020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Chevrolet Camaro2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Yukon2020 GMC Yukon XL2019 Cadillac CTS2019 Cadillac Escalade2019 Cadillac Escalade ESV2019 Chevrolet Camaro2019 Chevrolet Corvette2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Sierra2019 GMC Yukon2019 GMC Yukon XL+ 44 more
  Associated Documents

  • DownloadMC-10176650-0001.pdf↗
• May 27, 2020•Document ID: 10176647

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT

  Mfr Comm. #:

  060089029T

  Date Added:

  June 22, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability.

  Associated Products (606)

  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 35002020 Chevrolet 4500HD2020 Chevrolet 5500HD2020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Corvette+ 586 more
  Associated Documents

  • DownloadMC-10176647-0001.pdf↗
• May 27, 2020•Document ID: 10176333

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5735B

  Date Added:

  June 15, 2020

  Manufacturer:

  CHEVROLET

  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-10176333-0001.pdf↗
• May 27, 2020•Document ID: 10176332

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

  Mfr Comm. #:

  PIT5746

  Date Added:

  June 15, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates information on how dealers can contact the supplier for Associated Accessories offered through GM.

  Associated Products (38)

  2020 Cadillac Escalade ESV2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Yukon XL2019 Cadillac Escalade ESV2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Sierra2019 GMC Yukon2018 Cadillac Escalade ESV2018 Chevrolet Silverado2018 Chevrolet Suburban2018 Chevrolet Tahoe2018 GMC Sierra2018 GMC Yukon2017 Cadillac Escalade ESV2017 Chevrolet Silverado+ 18 more
  Associated Documents

  • DownloadMC-10176332-0001.pdf↗
• May 26, 2020•Document ID: 10176657

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIE0568B

  Date Added:

  June 22, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Shift to Park Message on Drivers Information Center (DIC) (ONLY On Push Button Ignition), Unable to Remove Key from Ignition Cylinder and/or Difficult to Shift Out of Park.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10176657-0001.pdf↗
• May 26, 2020•Document ID: 10176330

  Service Bulletin/Repair Instructions
  VISIBILITY; BACK OVER PREVENTION

  Mfr Comm. #:

  PIT5744

  Date Added:

  June 15, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10176330-0001.pdf↗
• May 21, 2020•Document ID: 10176821

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

  Mfr Comm. #:

  N202300791

  Date Added:

  June 29, 2020

  Manufacturer:

  CHEVROLET

  Summary

  Service Update - 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-10176821-0001.pdf↗
• May 21, 2020•Document ID: 10176621

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  20NA020

  Date Added:

  June 22, 2020

  Manufacturer:

  GMC

  Summary

  This technical bulletin 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-10176621-0001.pdf↗
• May 21, 2020•Document ID: 10176327

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  PIT5681A

  Date Added:

  June 15, 2020

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates the location of the GM Accessory Performance Brake System Rotor Specifications

  Associated Products (38)

  2020 Cadillac Escalade2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Yukon2019 Cadillac Escalade2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Sierra2019 GMC Yukon2018 Cadillac Escalade2018 Chevrolet Silverado2018 Chevrolet Suburban2018 Chevrolet Tahoe2018 GMC Sierra2018 GMC Yukon2017 Cadillac Escalade2017 Chevrolet Silverado+ 18 more
  Associated Documents

  • DownloadMC-10176327-0001.pdf↗
• May 20, 2020•Document ID: 10176820

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION; WHEELS

  Mfr Comm. #:

  N192272400

  Date Added:

  June 29, 2020

  Manufacturer:

  GMC

  Summary

  Customer Satisfaction Program - Certain 2019-2020 model year Chevrolet Silverado and GMC Sierra vehicles, equipped with an 8-Speed Automatic Transmission, may have a condition where the rear wheels will lock up at low speeds. An intermittent short circuit is being caused by wire bonds moving under high current and thermal load, making contact with adjacent wire(s) in the transmission control module (TCM). Dealers will replace the TCM.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10176820-0001.pdf↗
• May 20, 2020•Document ID: 10176649

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  070849020Q

  Date Added:

  June 22, 2020

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information for the IPC odometer programming method quick reference guide.

  Associated Products (712)

  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+ 692 more
  Associated Documents

  • DownloadMC-10176649-0001.pdf↗
• May 20, 2020•Document ID: 10176323

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION

  Mfr Comm. #:

  PIP5653F

  Date Added:

  June 15, 2020

  Manufacturer:

  CHEVROLET

  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-10176323-0001.pdf↗
• May 20, 2020•Document ID: 10176324

  Service Bulletin/Repair Instructions
  AIR BAGS

  Mfr Comm. #:

  PIP5675D

  Date Added:

  June 15, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history.  That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.

  Associated Products (13)

  2021 Chevrolet Trailblazer2020 Buick Encore2020 Cadillac CT42020 Cadillac CT52020 Cadillac XT42020 Cadillac XT52020 Chevrolet Blazer2020 Chevrolet Silverado2020 GMC Acadia2020 GMC Sierra2019 Cadillac XT42019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10176324-0001.pdf↗
• May 19, 2020•Document ID: 10176818

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION: BACK-UP ALARM

  Mfr Comm. #:

  N202299520

  Date Added:

  June 29, 2020

  Manufacturer:

  CHEVROLET

  Summary

  Customer Service Program - Certain vehicles may not have the backup alarm which should have been included the dealer kit. Dealers are to provide the missing backup alarm to the customer.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10176818-0001.pdf↗
• May 18, 2020•Document ID: 10176622

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION: CAMERA SYSTEM; STRUCTURE:BODY:TAILGATE

  Mfr Comm. #:

  20NA036

  Date Added:

  June 22, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides information for dealers/technicians on Rear Camera Gridlines Incorrect, Misaligned, Offset, Incorrect Camera View after Replacing the Tailgate Handle or Entire Tailgate.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10176622-0001.pdf↗
• May 18, 2020•Document ID: 10176618

  Service Bulletin/Repair Instructions
  EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE

  Mfr Comm. #:

  19NA269

  Date Added:

  June 22, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Technical bulletin provides a service procedure for dealers/technicians on installation of Radio Software Version U148 Over-the-Air Update.

  Associated Products (12)

  2020 Buick Enclave2020 Buick Encore2020 Cadillac CT62020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 Chevrolet Camaro2020 Chevrolet Silverado2020 Chevrolet Traverse2020 GMC Acadia2020 GMC Sierra
  Associated Documents

  • DownloadMC-10176618-0001.pdf↗
• May 15, 2020•Document ID: 10207732

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  N192282860 01

  Date Added:

  February 7, 2022

  Manufacturer:

  CHEVROLET

  Summary

  Service Update. Certain vehicles may have a condition where the transmission enters a neutral state when the internal range sensor (IRS) fault is active. Dealers are to reprogram the transmission control module.

  Associated Products (5)

  2020 Cadillac CT42020 Chevrolet Express2020 Chevrolet Silverado2020 GMC Savana2020 GMC Sierra
  Associated Documents

  • DownloadMC-10207732-0001.pdf↗
• May 15, 2020•Document ID: 10178400

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  N192282860 01

  Date Added:

  August 10, 2020

  Manufacturer:

  CHEVROLET

  Summary

  Service Update (Population Expansion). Certain vehicles may have a condition where the transmission enters a neutral state when the internal range sensor (IRS) fault is active. Dealers are to reprogram the transmission control module.

  Associated Products (5)

  2020 Cadillac CT42020 Chevrolet Express2020 Chevrolet Silverado2020 GMC Savana2020 GMC Sierra
  Associated Documents

  • DownloadMC-10178400-0001.pdf↗