Cadillac CT4 Service Bulletins

1,009 manufacturer communications on file.

• September 13, 2024•Document ID: 11007779

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIP5990A

  Date Added:

  September 13, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates a part restriction for certain MY 2.7 L3B service engines

  Associated Products (2)

  2022 Cadillac CT42021 Cadillac CT4
  Associated Documents

  • DownloadMC-11007779-0001.pdf↗
• September 13, 2024•Document ID: 11009035

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  PIE0794C

  Date Added:

  October 22, 2024

  Manufacturer:

  BUICK

  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:

  CHEVROLET

  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 (48)

  2025 Buick Enclave2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Chevrolet Corvette2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Hummer EV Pickup2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Canyon+ 28 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:

  CADILLAC

  Summary

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

  Associated Products (19)

  2024 Cadillac CT42024 GMC Canyon2024 GMC Savana2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 GMC Canyon2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Express2022 GMC Canyon2022 GMC Savana2021 Cadillac CT42021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Express2021 GMC Canyon2021 GMC Savana
  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:

  GMC

  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 (3)

  2024 Cadillac CT42024 Chevrolet Colorado2024 GMC Canyon
  Associated Documents

  • DownloadMC-11007768-0001.pdf↗
• September 12, 2024•Document ID: 11007868

  Service Campaign
  ENGINE

  Mfr Comm. #:

  N242450631

  Date Added:

  September 18, 2024

  Manufacturer:

  CADILLAC

  Summary

  Service Update. Certain vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.

  Associated Products (3)

  2023 Cadillac CT42022 Cadillac CT42021 Cadillac CT4
  Associated Documents

  • DownloadMC-11007868-0001.pdf↗
• September 12, 2024•Document ID: 11007744

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5099H

  Date Added:

  September 12, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

  Associated Products (53)

  2022 Buick Enclave2022 Buick Encore2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer2022 Chevrolet Traverse+ 33 more
  Associated Documents

  • DownloadMC-11007744-0001.pdf↗
• September 12, 2024•Document ID: 11007743

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5099H

  Date Added:

  September 12, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

  Associated Products (53)

  2022 Buick Enclave2022 Buick Encore2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer2022 Chevrolet Traverse+ 33 more
  Associated Documents

  • DownloadMC-11007743-0001.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 (12)

  2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV
  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:

  GMC

  Summary

  This Preliminary information communicates diagnostic information for vehicles with transmission noise

  Associated Products (19)

  2024 Cadillac CT42024 GMC Canyon2024 GMC Savana2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 GMC Canyon2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Express2022 GMC Canyon2022 GMC Savana2021 Cadillac CT42021 Chevrolet Camaro2021 Chevrolet Colorado2021 Chevrolet Express2021 GMC Canyon2021 GMC Savana
  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:

  BUICK

  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 (39)

  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 Suburban2024 GMC Hummer EV Pickup2024 GMC Yukon2024 GMC Yukon XL2023 Buick Encore GX2023 Cadillac CT42023 Cadillac Escalade2023 Cadillac Lyriq2023 Cadillac XT52023 Cadillac XT6+ 19 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:

  CADILLAC

  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 (8)

  2024 Cadillac CT42024 Cadillac Escalade2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 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 (165)

  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 Tahoe2025 Chevrolet Trailblazer+ 145 more
  Associated Documents

  • DownloadMC-11009037-0001.pdf↗
• September 10, 2024•Document ID: 11008964

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  22-NA-235

  Date Added:

  October 17, 2024

  Manufacturer:

  GMC

  Summary

  This service bulletin provides repair information to correct a customer concern of Wireless Charging Intermittent When Using iPhone and Samsung Phones at Offset Positions.

  Associated Products (22)

  2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Chevrolet Corvette2023 Chevrolet Tahoe2023 GMC Hummer EV Pickup2023 GMC Yukon2023 GMC Yukon XL2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac Escalade ESV2022 Chevrolet Colorado2022 Chevrolet Corvette2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 GMC Canyon2022 GMC Hummer EV Pickup+ 2 more
  Associated Documents

  • DownloadMC-11008964-0001.pdf↗
• September 10, 2024•Document ID: 11008961

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  21-NA-281

  Date Added:

  October 17, 2024

  Manufacturer:

  GMC

  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 (38)

  2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Chevrolet Tahoe2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Tahoe+ 18 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:

  CHEVROLET

  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 (165)

  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 Tahoe2025 Chevrolet Trailblazer+ 145 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 (151)

  2025 Buick Enclave2025 Buick Encore2025 Buick Envista2025 Cadillac CT42025 Cadillac CT52025 Cadillac XT52025 Cadillac XT62025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Terrain2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista+ 131 more
  Associated Documents

  • DownloadMC-11007208-0001.pdf↗
• September 6, 2024•Document ID: 11007196

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC5650L

  Date Added:

  September 6, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.

  Associated Products (53)

  2022 Buick Enclave2022 Buick Encore2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT62022 Chevrolet Blazer2022 Chevrolet Bolt EV2022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express2022 Chevrolet Malibu2022 Chevrolet Suburban2022 Chevrolet Tahoe2022 Chevrolet Trailblazer2022 Chevrolet Traverse+ 33 more
  Associated Documents

  • DownloadMC-11007196-0001.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:

  CADILLAC

  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 (29)

  2025 Cadillac CT42025 Cadillac CT52025 Chevrolet Corvette2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Chevrolet Corvette2024 Chevrolet Tahoe2024 GMC Yukon2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Chevrolet Corvette2023 Chevrolet Tahoe2023 GMC Yukon2022 Buick Envision2022 Cadillac CT42022 Cadillac CT52022 Cadillac Escalade2022 Chevrolet Corvette+ 9 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:

  GMC

  Summary

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

  Associated Products (165)

  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 Tahoe2025 Chevrolet Trailblazer+ 145 more
  Associated Documents

  • DownloadMC-11008898-0001.pdf↗