Cadillac CT4 Service Bulletins (2021)

814 manufacturer communications on file.

• March 22, 2021•Document ID: 10192031

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER

  Mfr Comm. #:

  21NA061

  Date Added:

  May 10, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter Key Fobs (North America ONLY).

  Associated Products (31)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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 Malibu2021 Chevrolet Spark+ 11 more
  Associated Documents

  • DownloadMC-10192031-0001.pdf↗
• March 17, 2021•Document ID: 10192034

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER

  Mfr Comm. #:

  21NA068

  Date Added:

  May 10, 2021

  Manufacturer:

  GMC

  Summary

  This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2021 and newer model year vehicles with RPO ATH (U.S. Only).

  Associated Products (32)

  2022 Chevrolet Bolt EV2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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+ 12 more
  Associated Documents

  • DownloadMC-10192034-0001.pdf↗
• March 17, 2021•Document ID: 10191233

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  110089005Q

  Date Added:

  May 3, 2021

  Manufacturer:

  GMC

  Summary

  This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).

  Associated Products (32)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet 4500XD2021 Chevrolet 6500XD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu+ 12 more
  Associated Documents

  • DownloadMC-10191233-0001.pdf↗
• March 12, 2021•Document ID: 10191238

  Service Bulletin/Repair Instructions
  AIR BAGS

  Mfr Comm. #:

  PIE0606B

  Date Added:

  May 3, 2021

  Manufacturer:

  CADILLAC

  Summary

  This engineering information (EI) closure ends the need for further information from technicians/field in regards to the service airbag lamp illuminated on the driver information center (DIC).

  Associated Products (1)

  2021 Cadillac CT4
  Associated Documents

  • DownloadMC-10191238-0001.pdf↗
• March 12, 2021•Document ID: 10190398

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

  Mfr Comm. #:

  PIC6433

  Date Added:

  April 19, 2021

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates that a service theft deterrent message may display with no DTC's.   OnStar will turn of the ECM read request to prevent re-occurrence.

  Associated Products (2)

  2021 Cadillac CT42021 Cadillac CT5
  Associated Documents

  • DownloadMC-10190398-0001.pdf↗
• March 11, 2021•Document ID: 10191232

  Service Bulletin/Repair Instructions
  EQUIPMENT ADAPTIVE/MOBILITY

  Mfr Comm. #:

  1008110001I

  Date Added:

  May 3, 2021

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information on proper use of floor mats.

  Associated Products (31)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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 Malibu2021 Chevrolet Spark+ 11 more
  Associated Documents

  • DownloadMC-10191232-0001.pdf↗
• March 11, 2021•Document ID: 10191207

  Service Bulletin/Repair Instructions
  POWER TRAIN; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  20NA138

  Date Added:

  May 3, 2021

  Manufacturer:

  CADILLAC

  Summary

  This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.

  Associated Products (29)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu2021 Chevrolet Spark2021 Chevrolet Suburban2021 Chevrolet Tahoe+ 9 more
  Associated Documents

  • DownloadMC-10191207-0001.pdf↗
• March 10, 2021•Document ID: 10192030

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  21NA060

  Date Added:

  May 10, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin describes the TLC/SPS2 Module Programming Requirements for Vehicles Using GM?s New Vehicle Intelligence Platform (VIP) Module Architecture.

  Associated Products (9)

  2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Chevrolet Corvette2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Yukon2021 GMC Yukon XL
  Associated Documents

  • DownloadMC-10192030-0001.pdf↗
• March 9, 2021•Document ID: 10191217

  Service Bulletin/Repair Instructions
  EQUIPMENT

  Mfr Comm. #:

  21NA043

  Date Added:

  May 3, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.

  Associated Products (31)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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 Malibu2021 Chevrolet Spark+ 11 more
  Associated Documents

  • DownloadMC-10191217-0001.pdf↗
• March 9, 2021•Document ID: 10191206

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  20NA132

  Date Added:

  May 3, 2021

  Manufacturer:

  CADILLAC

  Summary

  This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.

  Associated Products (32)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet 4500XD2021 Chevrolet 6500XD2021 Chevrolet Blazer2021 Chevrolet Bolt EV2021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Corvette2021 Chevrolet Equinox2021 Chevrolet Express2021 Chevrolet Malibu+ 12 more
  Associated Documents

  • DownloadMC-10191206-0001.pdf↗
• March 9, 2021•Document ID: 10190396

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR

  Mfr Comm. #:

  PIP5712A

  Date Added:

  April 19, 2021

  Manufacturer:

  CADILLAC

  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 (10)

  2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac XT42021 Cadillac XT52021 Cadillac XT62021 Chevrolet Blazer2021 Chevrolet Trailblazer2021 GMC Acadia
  Associated Documents

  • DownloadMC-10190396-0001.pdf↗
• March 8, 2021•Document ID: 10191205

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  20NA123

  Date Added:

  May 3, 2021

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated with DTCs U1961, U1983 setting.

  Associated Products (9)

  2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Chevrolet Corvette2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Yukon2021 GMC Yukon XL
  Associated Documents

  • DownloadMC-10191205-0001.pdf↗
• March 8, 2021•Document ID: 10191163

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  16NA109

  Date Added:

  May 3, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.

  Associated Products (31)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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 Malibu2021 Chevrolet Spark+ 11 more
  Associated Documents

  • DownloadMC-10191163-0001.pdf↗
• March 8, 2021•Document ID: 10190367

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5817A

  Date Added:

  April 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates and issue with a SES MIL and the BCM keeping the ignition main relay on after the vehicle is turned off.  Dealers are to replace the BCM.

  Associated Products (8)

  2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Cadillac Escalade ESV2021 Chevrolet Corvette2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Yukon XL
  Associated Documents

  • DownloadMC-10190367-0001.pdf↗
• March 2, 2021•Document ID: 10191243

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  PIE0614

  Date Added:

  May 3, 2021

  Manufacturer:

  CADILLAC

  Summary

  This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a popping and/or thump type noise heard from the front suspension during sharp turns and/or while backing out.

  Associated Products (2)

  2021 Cadillac CT42021 Cadillac CT5
  Associated Documents

  • DownloadMC-10191243-0001.pdf↗
• March 1, 2021•Document ID: 10190355

  Service Bulletin/Repair Instructions
  STRUCTURE

  Mfr Comm. #:

  PIP5784

  Date Added:

  April 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer technician to inspect for a missing 1-2-7-8-R clutch fluid passage seal  or incorrect 1-2-7-8-R clutch fluid passage seal being install for a no movement concern after valve body replacement on the 8L45 or 8L90 transmissions.

  Associated Products (6)

  2021 Cadillac CT42021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Express2021 GMC Canyon2021 GMC Savana
  Associated Documents

  • DownloadMC-10190355-0001.pdf↗
• March 1, 2021•Document ID: 10190351

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; STRUCTURE

  Mfr Comm. #:

  PIC6384D

  Date Added:

  April 19, 2021

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates a parts restriction is in place for the Body Control Module on 2020 Cadillac CT4, CT5, Chevrolet Corvette, Suburban, Tahoe and GMC Yukon.

  Associated Products (7)

  2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 Chevrolet Corvette2021 Chevrolet Suburban2021 Chevrolet Tahoe2021 GMC Yukon
  Associated Documents

  • DownloadMC-10190351-0001.pdf↗
• January 29, 2021•Document ID: 10188403

  Service Bulletin/Repair Instructions
  POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT; SUSPENSION:FRONT:MACPHERSON STRUT; SUSPENSION:FRONT:SHOCK ABSORBER

  Mfr Comm. #:

  150089004C

  Date Added:

  March 8, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.

  Associated Products (30)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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 Spark2021 Chevrolet Suburban+ 10 more
  Associated Documents

  • DownloadMC-10188403-0001.pdf↗
• January 29, 2021•Document ID: 10188401

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

  Mfr Comm. #:

  21NA026

  Date Added:

  March 8, 2021

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen.

  Associated Products (30)

  2021 Buick Enclave2021 Buick Encore2021 Buick Encore GX2021 Buick Envision2021 Cadillac CT42021 Cadillac CT52021 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 Spark2021 Chevrolet Suburban+ 10 more
  Associated Documents

  • DownloadMC-10188401-0001.pdf↗
• January 22, 2021•Document ID: 10187747

  Service Bulletin/Repair Instructions
  EQUIPMENT; FUEL SYSTEM, OTHER:KINETIC:CLUTCH

  Mfr Comm. #:

  18NA285

  Date Added:

  March 1, 2021

  Manufacturer:

  CADILLAC

  Summary

  This informational bulletin advises the tech of a possible normal condition when the vehicle creeps forward during start up conditions when the clutch packs are full of residual oil.

  Associated Products (6)

  2021 Cadillac CT42021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Express2021 GMC Canyon2021 GMC Savana
  Associated Documents

  • DownloadMC-10187747-0001.pdf↗