GMC Sierra Service Bulletins (2020)

1,991 manufacturer communications on file.

• March 4, 2020•Document ID: 10173676

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; SERVICE BRAKES

  Mfr Comm. #:

  PIT5735

  Date Added:

  April 13, 2020

  Manufacturer:

  GMC

  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 is working on updated cals for the BSCM.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10173676-0001.pdf↗
• March 4, 2020•Document ID: 10173675

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5670D

  Date Added:

  April 13, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathering additional data.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10173675-0001.pdf↗
• March 4, 2020•Document ID: 10173674

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; POWER TRAIN

  Mfr Comm. #:

  PIP5700B

  Date Added:

  April 13, 2020

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.

  Associated Products (56)

  2020 Cadillac CT42020 Chevrolet Camaro2020 Chevrolet Colorado2020 Chevrolet Express2020 Chevrolet Silverado2020 GMC Canyon2020 GMC Savana2020 GMC Sierra2019 Cadillac ATS2019 Cadillac CTS2019 Chevrolet Camaro2019 Chevrolet Colorado2019 Chevrolet Corvette2019 Chevrolet Express2019 Chevrolet Silverado2019 GMC Canyon2019 GMC Savana2019 GMC Sierra2018 Cadillac ATS2018 Cadillac CT6+ 36 more
  Associated Documents

  • DownloadMC-10173674-0001.pdf↗
• March 3, 2020•Document ID: 10179892

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  HT-03.03.2020

  Date Added:

  September 19, 2020

  Manufacturer:

  GMC

  Summary

  Hypertech Inline Speedometer Calibrator Module Installation Instructions

  Associated Products (2)

  2020 GMC Sierra2019 GMC Sierra
  Associated Documents

  • DownloadMC-10179892-0001.pdf↗
• March 3, 2020•Document ID: 10174301

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

  Mfr Comm. #:

  060089026P

  Date Added:

  April 27, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This warranty administration bulletin provides information on Warranty Administration ? Customer Concern Not Duplicated (CCND) Labor Operation Numbers.

  Associated Products (236)

  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+ 216 more
  Associated Documents

  • DownloadMC-10174301-0001.pdf↗
• March 3, 2020•Document ID: 10174073

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

  Mfr Comm. #:

  20NA050

  Date Added:

  April 27, 2020

  Manufacturer:

  CADILLAC

  Summary

  This technical bulletin provides a procedure to clear the codes and test the Tcase if found that the customer has tried to shift the t-case from 4lo to Hi gears while driving.

  Associated Products (19)

  2020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Chevrolet Colorado2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Sierra2020 GMC Yukon2020 GMC Yukon XL2019 Cadillac Escalade2019 Cadillac Escalade ESV2019 Chevrolet Colorado2019 Chevrolet Silverado2019 Chevrolet Suburban2019 Chevrolet Tahoe2019 GMC Canyon2019 GMC Sierra2019 GMC Yukon2019 GMC Yukon XL
  Associated Documents

  • DownloadMC-10174073-0001.pdf↗
• March 3, 2020•Document ID: 10173671

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5712

  Date Added:

  April 13, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer removal.

  Associated Products (13)

  2020 Cadillac CT42020 Cadillac CT52020 Cadillac XT42020 Cadillac XT52020 Cadillac XT62020 Chevrolet Blazer2020 Chevrolet Silverado2020 GMC Acadia2020 GMC Sierra2019 Cadillac CT62019 Cadillac XT42019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10173671-0001.pdf↗
• March 3, 2020•Document ID: 10173670

  Service Bulletin/Repair Instructions
  ENGINE; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIP5711

  Date Added:

  April 13, 2020

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10173670-0001.pdf↗
• March 2, 2020•Document ID: 10174307

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

  Mfr Comm. #:

  990089019S

  Date Added:

  April 27, 2020

  Manufacturer:

  BUICK

  Summary

  This warranty administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.

  Associated Products (238)

  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+ 218 more
  Associated Documents

  • DownloadMC-10174307-0001.pdf↗
• March 2, 2020•Document ID: 10173628

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  PIP5637E

  Date Added:

  April 13, 2020

  Manufacturer:

  CHEVROLET

  Summary

  The Preliminary Information communication advises the technician that the Product Quality Center has a part exchange for 3.0 LM2 engine. The dealer technician is advised to call the GM Product Quality Center for further assistance

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10173628-0001.pdf↗
• February 28, 2020•Document ID: 10173416

  Service Bulletin/Repair Instructions
  EQUIPMENT; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  040601029J

  Date Added:

  April 6, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin explains Unscheduled Supplemental Services (including Flushing Services and Additives) and the Proper use of GM Simplified Maintenance Schedules.

  Associated Products (609)

  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+ 589 more
  Associated Documents

  • DownloadMC-10173416-0001.pdf↗
• February 28, 2020•Document ID: 10173393

  Service Bulletin/Repair Instructions
  EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; STRUCTURE:BODY

  Mfr Comm. #:

  19NA104

  Date Added:

  April 6, 2020

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.

  Associated Products (275)

  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+ 255 more
  Associated Documents

  • DownloadMC-10173393-0001.pdf↗
• February 28, 2020•Document ID: 10172815

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  20NA044

  Date Added:

  March 30, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This technical bulletin provides repair information to correct a customer concern of endgate will not auto open or auto close after accessory tonneau cover installation, and/or poor fit of tonneau cover to endgate.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10172815-0001.pdf↗
• February 28, 2020•Document ID: 10172339

  Service Bulletin/Repair Instructions
  ENGINE; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE

  Mfr Comm. #:

  PIT5734

  Date Added:

  March 9, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10172339-0001.pdf↗
• February 27, 2020•Document ID: 10173415

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

  Mfr Comm. #:

  040089015U

  Date Added:

  April 6, 2020

  Manufacturer:

  GMC

  Summary

  This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only).

  Associated Products (246)

  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+ 226 more
  Associated Documents

  • DownloadMC-10173415-0001.pdf↗
• February 26, 2020•Document ID: 10173414

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

  Mfr Comm. #:

  000310003Y

  Date Added:

  April 6, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This warranty administration bulletin provides information on the tires supplied with a new vehicle are covered by General Motors against defects in material or workmanship under the Bumper-to-Bumper New Vehicle Limited Warranty.

  Associated Products (556)

  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+ 536 more
  Associated Documents

  • DownloadMC-10173414-0001.pdf↗
• February 26, 2020•Document ID: 10172814

  Service Bulletin/Repair Instructions
  EQUIPMENT; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  20NA043

  Date Added:

  March 30, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin advises the technician to not replace the TMAP sensor, clean it using air or harsh chemicals but allow time for the sensor to thaw.

  Associated Products (8)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra2018 Chevrolet Silverado2018 GMC Sierra2017 Chevrolet Silverado2017 GMC Sierra
  Associated Documents

  • DownloadMC-10172814-0001.pdf↗
• February 26, 2020•Document ID: 10172813

  Service Bulletin/Repair Instructions
  LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH; EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  20NA040

  Date Added:

  March 30, 2020

  Manufacturer:

  GMC

  Summary

  This technical bulletin provides repair information to correct a customer concern of the pickup box power endgate may not open on initial press, or may not open at all.

  Associated Products (4)

  2020 Chevrolet Silverado2020 GMC Sierra2019 Chevrolet Silverado2019 GMC Sierra
  Associated Documents

  • DownloadMC-10172813-0001.pdf↗
• February 26, 2020•Document ID: 10172811

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, DIESEL; ENGINE

  Mfr Comm. #:

  20NA038

  Date Added:

  March 30, 2020

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.

  Associated Products (78)

  2020 Cadillac CT62020 Cadillac Escalade2020 Cadillac Escalade ESV2020 Chevrolet 35002020 Chevrolet Camaro2020 Chevrolet Corvette2020 Chevrolet Express2020 Chevrolet Silverado2020 Chevrolet Suburban2020 Chevrolet Tahoe2020 GMC Savana2020 GMC Sierra2020 GMC Yukon2020 GMC Yukon XL2019 Cadillac CT62019 Cadillac CTS2019 Cadillac Escalade2019 Cadillac Escalade ESV2019 Chevrolet Camaro2019 Chevrolet Corvette+ 58 more
  Associated Documents

  • DownloadMC-10172811-0001.pdf↗
• February 26, 2020•Document ID: 10172335

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, DIESEL; ENGINE

  Mfr Comm. #:

  PIP5670C

  Date Added:

  March 9, 2020

  Manufacturer:

  GMC

  Summary

  This preliminary information communicates the part restriction for the diesel turbocharger and EGR components. Updated to provide instruction on gathering additional data.

  Associated Products (2)

  2020 Chevrolet Silverado2020 GMC Sierra
  Associated Documents

  • DownloadMC-10172335-0001.pdf↗