GMC Sierra Service Bulletins (2020)

1,991 manufacturer communications on file.

• January 2, 2020•Document ID: 10171878

  Service Bulletin/Repair Instructions
  EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  16NA383

  Date Added:

  March 2, 2020

  Manufacturer:

  PONTIAC

  Summary

  This informational bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

  Associated Products (964)

  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 4500XD2020 Chevrolet 5500HD2020 Chevrolet 5500XD2020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro+ 944 more
  Associated Documents

  • DownloadMC-10171878-0001.pdf↗
• December 20, 2019•Document ID: 10170488

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE

  Mfr Comm. #:

  PIP5695

  Date Added:

  January 21, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to dealer technicians to check for open field actions or ECM updates for fuel gauge concerns or DTCs P24B0 or P0461.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170488-0001.pdf↗
• December 17, 2019•Document ID: 10170476

  Service Bulletin/Repair Instructions
  EQUIPMENT:APPLIANCE:AIR CONDITIONER

  Mfr Comm. #:

  PIP5688A

  Date Added:

  January 21, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer technician to instruct the customer to use the block heater only at temperatures 0F and below. A calibration will become available at a later date.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170476-0001.pdf↗
• December 12, 2019•Document ID: 10170498

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  PI0592F

  Date Added:

  January 21, 2020

  Manufacturer:

  SATURN

  Summary

  This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).

  Associated Products (591)

  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+ 571 more
  Associated Documents

  • DownloadMC-10170498-0001.pdf↗
• December 12, 2019•Document ID: 10170432

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  PIP5689A

  Date Added:

  January 21, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the technician to reprogram the engine control module and, if necessary, diagnose and repair P24B0.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170432-0001.pdf↗
• December 10, 2019•Document ID: 10170705

  Service Bulletin/Repair Instructions
  STRUCTURE

  Mfr Comm. #:

  18NA383

  Date Added:

  January 27, 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-10170705-0001.pdf↗
• December 10, 2019•Document ID: 10170491

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  19NA269

  Date Added:

  January 21, 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 (8)

  2020 Cadillac CT62020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet Silverado2020 Chevrolet Traverse2020 GMC Acadia2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170491-0001.pdf↗
• December 9, 2019•Document ID: 10170425

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, GASOLINE

  Mfr Comm. #:

  PIT5723

  Date Added:

  January 21, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates information that the EVAP purge pump may be filling with liquid fuel if the customer overfills the fuel tank by over 3 clicks of a normal filler nozzle.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10170425-0001.pdf↗
• December 9, 2019•Document ID: 10170424

  Service Bulletin/Repair Instructions
  SERVICE BRAKES

  Mfr Comm. #:

  PIT5479C

  Date Added:

  January 21, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.

  Associated Products (50)

  2020 Cadillac Escalade ESV2020 Chevrolet Colorado2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Canyon2020 GMC Sierra2020 GMC Yukon XL2019 Cadillac Escalade ESV2019 Chevrolet Colorado2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Canyon2019 GMC Sierra2019 GMC Yukon2018 Cadillac Escalade ESV2018 Chevrolet Colorado2018 Chevrolet Silverado2018 Chevrolet Suburban+ 30 more
  Associated Documents

  • DownloadMC-10170424-0001.pdf↗
• December 6, 2019•Document ID: 10171248

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  N192277930

  Date Added:

  February 10, 2020

  Manufacturer:

  GMC

  Summary

  N192277930 - Service Update - Certain 2020 model year Chevrolet Silverado and GMC Sierra vehicles may, after several years of use, fracture at the yoke-to-tube friction weld joint under torsional load. If the prop shaft fractures, the vehicle will experience a loss of propulsion without warning. The customer may notice a loud bang upon fracture that will coincide with the loss of propulsion. If the prop shaft fractures while the vehicle is parked on a graded surface and the park brake is not engaged, roll away is possible. Dealer will replace prop shaft and fasteners.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10171248-0001.pdf↗
• December 6, 2019•Document ID: 10170423

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:SOFTWARE

  Mfr Comm. #:

  PIP5690A

  Date Added:

  January 21, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealer technicians there is a software anomaly not allowing the air filter life to be reset.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170423-0001.pdf↗
• December 5, 2019•Document ID: 10171247

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  N192267990

  Date Added:

  February 10, 2020

  Manufacturer:

  CHEVROLET

  Summary

  N192259800 - Customer Satisfaction Program - Certain 2020 vehicles vehicles, equipped with the 6.6L diesel engine (RPO L5P), may have a condition in which the adhesive attaching the heat shield to the air inlet panel may lose adhesion. Dealers are to replace the air inlet grille panel assembly.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10171247-0001.pdf↗
• December 5, 2019•Document ID: 10170422

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  PIP5688

  Date Added:

  January 21, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the dealer technician to instruct the customer to use the block heater only at temperatures 0F and below. A calibration will become available at a later date.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170422-0001.pdf↗
• December 2, 2019•Document ID: 10171240

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  N192266750-01

  Date Added:

  February 10, 2020

  Manufacturer:

  CHEVROLET

  Summary

  N192266750-01 - Service Update (Revised Warranty Information and Service Procedure). On certain vehicles that are equipped with a 6.6L diesel engine, may have one or more of the following conditions exist: 1.The instrument panel cluster may incorrectly display the message ?DEF Low? when a diesel engine fluid (DEF) controller internal fault is detected (DTC P20FF), instead of displaying the proper ?Service DEF System? message. 2.The customer may complain of excessive engine fan noise at a low vehicle speed. 3.Under certain conditions, the diagnostic system may set one of the following DTC?s when there is no problem with a component: (P20EE, P226D, P16F3 and P129F). Dealers are to reprogram the engine control module.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10171240-0001.pdf↗
• December 2, 2019•Document ID: 10170502

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIE0549

  Date Added:

  January 21, 2020

  Manufacturer:

  GMC

  Summary

  This engineering information bulletin is requesting information from the field on no crank / no start issue resulting in a starter replacement due to the solenoid overheating.

  Associated Products (6)

  2020 Cadillac XT42020 Chevrolet Silverado2020 GMC Sierra2019 Cadillac XT42019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10170502-0001.pdf↗
• December 2, 2019•Document ID: 10170419

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  PIP5668B

  Date Added:

  January 21, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the dealer technician the coolant control valve is no longer on restriction.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10170419-0001.pdf↗
• December 2, 2019•Document ID: 10170418

  Service Bulletin/Repair Instructions
  STRUCTURE

  Mfr Comm. #:

  PIP5673A

  Date Added:

  January 21, 2020

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates advises the technician that the ECM part number will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

  Associated Products (8)

  2020 Cadillac CT62020 Cadillac XT42020 Chevrolet Silverado2020 GMC Sierra2019 Cadillac CT62019 Cadillac XT42019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10170418-0001.pdf↗
• November 27, 2019•Document ID: 10169655

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; EXTERIOR LIGHTING:FOG LIGHTS; STRUCTURE

  Mfr Comm. #:

  N192279350

  Date Added:

  December 30, 2019

  Manufacturer:

  GMC

  Summary

  N192279350 - Service Update Bulletin. On certain vehicles, dealer installed accessory LED fog lamps were offered and sold to customers, but there was not a body control module calibration available at the time to enable the fog lamps to operate. Dealers are to reprogram the body control module.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10169655-0001.pdf↗
• November 26, 2019•Document ID: 10169357

  Service Bulletin/Repair Instructions
  EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  100089009D

  Date Added:

  December 16, 2019

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides information on key code security rules and information on GM keycode look-up applications.

  Associated Products (775)

  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 4500HD2020 Chevrolet 5500HD2020 Chevrolet Blazer2020 Chevrolet Bolt EV2020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Corvette2020 Chevrolet Equinox+ 755 more
  Associated Documents

  • DownloadMC-10169357-0001.pdf↗
• November 26, 2019•Document ID: 10168984

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:SOFTWARE

  Mfr Comm. #:

  PIP5690

  Date Added:

  December 9, 2019

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to dealer technicians there is a software anomaly not allowing the air filter life to be reset.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10168984-0001.pdf↗