Cadillac CT4 Service Bulletins (2024)

397 manufacturer communications on file.

• September 18, 2024•Document ID: 11009453

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIE0782A

  Date Added:

  October 29, 2024

  Manufacturer:

  CADILLAC

  Summary

  This engineering information (EI Lite) closure ends the need for technicians to submit pictures using the FPR App process in regard to coolant leaking around the Coolant Control Valve (CCV).

  Associated Products (41)

  2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 GMC Acadia2023 Buick Envision2023 Cadillac CT42023 Cadillac CT52023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer2023 GMC Acadia2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac XT4+ 21 more
  Associated Documents

  • DownloadMC-11009453-0001.pdf↗
• September 17, 2024•Document ID: 11009756

  Service Bulletin/Repair Instructions
  ENGINE; POWER TRAIN

  Mfr Comm. #:

  20-NA-138

  Date Added:

  November 5, 2024

  Manufacturer:

  CHEVROLET

  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 (575)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 Chevrolet Trailblazer+ 555 more
  Associated Documents

  • DownloadMC-11009756-0001.pdf↗
• September 17, 2024•Document ID: 11009187

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  24-NA-088

  Date Added:

  October 25, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides diagnostic information for technicians on possible replacement of transmission control valve bodies to correct customer concerns of Malfunction Indicator Lamp (MIL) Illuminated, Transmission Not Shifting/Default Mode - DTC P0747 Set.

  Associated Products (20)

  2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon2023 GMC Yukon XL
  Associated Documents

  • DownloadMC-11009187-0001.pdf↗
• September 16, 2024•Document ID: 11009088

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  08-07-30-026I

  Date Added:

  October 24, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.

  Associated Products (789)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 769 more
  Associated Documents

  • DownloadMC-11009088-0001.pdf↗
• September 14, 2024•Document ID: 11009039

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  18-NA-146

  Date Added:

  October 22, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).

  Associated Products (648)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 628 more
  Associated Documents

  • DownloadMC-11009039-0001.pdf↗
• September 13, 2024•Document ID: 11009035

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIE0794C

  Date Added:

  October 22, 2024

  Manufacturer:

  CADILLAC

  Summary

  This engineering information (EI Lite) asks the technicians that if you encounter a vehicle where customers comment on having oil leaking from the oil pan that drives a warrantable item type of repair on said vehicles, use the Field Product Reporting (FPR) App process.

  Associated Products (16)

  2025 Buick Envision2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 GMC Acadia2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 GMC Acadia
  Associated Documents

  • DownloadMC-11009035-0001.pdf↗
• September 13, 2024•Document ID: 11007784

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5985E

  Date Added:

  September 14, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.

  Associated Products (64)

  2025 Buick Enclave2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Chevrolet Corvette2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Hummer EV Pickup2024 BrightDrop Zevo2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Silverado+ 44 more
  Associated Documents

  • DownloadMC-11007784-0001.pdf↗
• September 13, 2024•Document ID: 11007771

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5996A

  Date Added:

  September 13, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates diagnostic information for vehicles with transmission noise.

  Associated Products (89)

  2024 Cadillac CT42024 Chevrolet Silverado2024 GMC Canyon2024 GMC Savana2024 GMC Sierra2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 Chevrolet Silverado2023 GMC Canyon2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Silverado2022 GMC Canyon2022 GMC Savana2022 GMC Sierra2021 Cadillac CT4+ 69 more
  Associated Documents

  • DownloadMC-11007771-0001.pdf↗
• September 13, 2024•Document ID: 11007768

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5998

  Date Added:

  September 13, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to the technician, if an engine oil leak is coming from the rear main seal, they need to replace the housing that comes with the seal.

  Associated Products (5)

  2024 Cadillac CT42024 Chevrolet Colorado2024 Chevrolet Silverado2024 GMC Canyon2024 GMC Sierra
  Associated Documents

  • DownloadMC-11007768-0001.pdf↗
• September 11, 2024•Document ID: 11008967

  Service Bulletin/Repair Instructions
  POWER TRAIN; ELECTRICAL SYSTEM

  Mfr Comm. #:

  23-NA-210

  Date Added:

  October 17, 2024

  Manufacturer:

  CADILLAC

  Summary

  This bulletin provides a procedure to perform a diagnostic check to verify if DTCs P18AE and/or P0700 Set returns when reset and to clear the codes and validate code does not set again.

  Associated Products (18)

  2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 GMC Sierra2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 GMC Sierra2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 GMC Sierra
  Associated Documents

  • DownloadMC-11008967-0001.pdf↗
• September 11, 2024•Document ID: 11007703

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5996

  Date Added:

  September 11, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates diagnostic information for vehicles with transmission noise

  Associated Products (89)

  2024 Cadillac CT42024 Chevrolet Silverado2024 GMC Canyon2024 GMC Savana2024 GMC Sierra2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 Chevrolet Silverado2023 GMC Canyon2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Silverado2022 GMC Canyon2022 GMC Savana2022 GMC Sierra2021 Cadillac CT4+ 69 more
  Associated Documents

  • DownloadMC-11007703-0001.pdf↗
• September 11, 2024•Document ID: 11007687

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6086H

  Date Added:

  September 11, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides the technician with steps to resolve the issue of an oily substance that may be found on the inside windshield surface, and appears to be leaking from the rear view mirror area.  Technician will remove the moisture sensor and clean the glass and mounting bracket with alcohol wipe. If the gel separates from the sensor the sensor will need to be replaced.

  Associated Products (124)

  2025 Cadillac CT42025 Cadillac XT52025 Cadillac XT62025 GMC Hummer EV Pickup2024 Buick Encore GX2024 Cadillac CT42024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT52024 Cadillac XT62024 Chevrolet Silverado2024 Chevrolet Suburban2024 GMC Hummer EV Pickup2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Buick Encore GX2023 Cadillac CT42023 Cadillac Escalade2023 Cadillac Lyriq+ 104 more
  Associated Documents

  • DownloadMC-11007687-0001.pdf↗
• September 11, 2024•Document ID: 11007678

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  N242435630-03

  Date Added:

  September 11, 2024

  Manufacturer:

  CHEVROLET

  Summary

  Customer Satisfaction Program - certain vehicles may have a condition where the battery is at risk for a drain following an over-the-air update. Dealers are to reprogram the serial data gateway module.

  Associated Products (10)

  2024 Cadillac CT42024 Cadillac Escalade2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2023 Cadillac CT42023 Cadillac Escalade2023 Cadillac Escalade ESV
  Associated Documents

  • DownloadMC-11007678-0001.pdf↗
• September 10, 2024•Document ID: 11009037

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  07-00-89-036K

  Date Added:

  October 22, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.

  Associated Products (497)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 477 more
  Associated Documents

  • DownloadMC-11009037-0001.pdf↗
• September 10, 2024•Document ID: 11008961

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  21-NA-281

  Date Added:

  October 17, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides diagnostic information for technicians in cases of an ETRS system fault or a no start condition - If the vehicle needs to be moved, it is recommended to use wheel dollies, tire skates or the NEW Manual Park Release tool DT-52910.

  Associated Products (48)

  2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL+ 28 more
  Associated Documents

  • DownloadMC-11008961-0001.pdf↗
• September 9, 2024•Document ID: 11008956

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  02-00-89-002X

  Date Added:

  October 17, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).

  Associated Products (936)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 916 more
  Associated Documents

  • DownloadMC-11008956-0001.pdf↗
• September 6, 2024•Document ID: 11007208

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT3271P

  Date Added:

  September 6, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.

  Associated Products (1056)

  2025 Buick Enclave2025 Buick Encore2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Cadillac XT62025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Sierra2025 GMC Terrain2024 BrightDrop Zevo2024 Buick Enclave2024 Buick Encore+ 1036 more
  Associated Documents

  • DownloadMC-11007208-0001.pdf↗
• September 4, 2024•Document ID: 11006994

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  PIT5851E

  Date Added:

  September 4, 2024

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.

  Associated Products (40)

  2025 Cadillac CT42025 Cadillac CT52025 Chevrolet Corvette2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Chevrolet Corvette2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Chevrolet Corvette2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon+ 20 more
  Associated Documents

  • DownloadMC-11006994-0001.pdf↗
• August 27, 2024•Document ID: 11008898

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  24-NA-174

  Date Added:

  October 10, 2024

  Manufacturer:

  CHEVROLET

  Summary

  The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.

  Associated Products (648)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban+ 628 more
  Associated Documents

  • DownloadMC-11008898-0001.pdf↗
• August 26, 2024•Document ID: 11006621

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  General Communication

  Date Added:

  August 26, 2024

  Manufacturer:

  CHEVROLET

  Summary

  Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

  Associated Products (1209)

  2025 Buick Enclave2025 Buick Encore2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Cadillac XT62025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Terrain2024 BrightDrop Zevo2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX+ 1189 more
  Associated Documents

  • DownloadMC-11006621-0001.pdf↗