Cadillac CT4 Service Bulletins (2024)

397 manufacturer communications on file.

• January 12, 2024•Document ID: 10249579

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

  Mfr Comm. #:

  PI1394B

  Date Added:

  February 2, 2024

  Manufacturer:

  CADILLAC

  Summary

  This PI bulletin advises the technician on the proper way to install the pistons in an engine.

  Associated Products (1144)

  2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Express2024 Chevrolet Malibu2024 Chevrolet Silverado2024 Chevrolet Suburban+ 1124 more
  Associated Documents

  • DownloadMC-10249579-0001.pdf↗
• January 12, 2024•Document ID: 10249011

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  02-08-42-001J

  Date Added:

  January 19, 2024

  Manufacturer:

  GMC

  Summary

  This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.

  Associated Products (1112)

  2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Bolt EV2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Silverado+ 1092 more
  Associated Documents

  • DownloadMC-10249011-0001.pdf↗
• January 11, 2024•Document ID: 10249037

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  22-NA-240

  Date Added:

  January 19, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin advises the tech to validate if oil is leaking into the cooling system and to test and verify were to leak is coming from before replacing all the parts that wouldn't apply to the repair.

  Associated Products (172)

  2024 Buick Enclave2024 Cadillac CT42024 Cadillac CT52024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Camaro2024 Chevrolet Traverse2023 Buick Enclave2023 Cadillac CT42023 Cadillac CT52023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer2023 Chevrolet Camaro2023 Chevrolet Traverse2023 GMC Acadia2022 Buick Enclave2022 Cadillac CT42022 Cadillac CT5+ 152 more
  Associated Documents

  • DownloadMC-10249037-0001.pdf↗
• January 10, 2024•Document ID: 10249970

  Service Bulletin/Repair Instructions
  STEERING:ELECTRIC POWER ASSIST SYSTEM

  Mfr Comm. #:

  PIC6536

  Date Added:

  February 12, 2024

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to the technicians some additional diagnostic steps to perform if they encounter a no crank condition and/or loss of power steering.

  Associated Products (10)

  2024 Cadillac CT42024 Cadillac CT52023 Cadillac CT42023 Cadillac CT52022 Cadillac CT42022 Cadillac CT52021 Cadillac CT42021 Cadillac CT52020 Cadillac CT42020 Cadillac CT5
  Associated Documents

  • DownloadMC-10249970-0001.pdf↗
• January 8, 2024•Document ID: 10249535

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  PI0592I

  Date Added:

  February 2, 2024

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (802)

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  Associated Documents

  • DownloadMC-10249535-0001.pdf↗
• January 5, 2024•Document ID: 10249959

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIP5841D

  Date Added:

  February 12, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.

  Associated Products (41)

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  Associated Documents

  • DownloadMC-10249959-0001.pdf↗
• December 20, 2023•Document ID: 10248703

  Service Bulletin/Repair Instructions
  EQUIPMENT; POWER TRAIN

  Mfr Comm. #:

  16-NA-361

  Date Added:

  January 13, 2024

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides service /diagnostic information to aid with a Transmission Harsh 1-2 Shift Upon First Start Up/Shift of the Day Under Light Throttle.

  Associated Products (96)

  2024 Cadillac CT42024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Silverado2024 GMC Canyon2024 GMC Savana2024 GMC Sierra2023 Cadillac CT42023 Chevrolet Camaro2023 Chevrolet Colorado2023 Chevrolet Express2023 Chevrolet Silverado2023 GMC Canyon2023 GMC Savana2023 GMC Sierra2022 Cadillac CT42022 Chevrolet Camaro2022 Chevrolet Colorado2022 Chevrolet Equinox2022 Chevrolet Express+ 76 more
  Associated Documents

  • DownloadMC-10248703-0001.pdf↗
• December 15, 2023•Document ID: 10249294

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS

  Mfr Comm. #:

  PIT5962A

  Date Added:

  January 29, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.

  Associated Products (648)

  2025 Chevrolet Silverado2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Bolt EV2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Express+ 628 more
  Associated Documents

  • DownloadMC-10249294-0001.pdf↗
• December 13, 2023•Document ID: 10249286

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE; EQUIPMENT:ELECTRICAL

  Mfr Comm. #:

  PIT6097B

  Date Added:

  January 29, 2024

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the latest ISO update on Apple 15 phones.

  Associated Products (96)

  2024 Buick Enclave2024 Buick Encore GX2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Canyon+ 76 more
  Associated Documents

  • DownloadMC-10249286-0001.pdf↗
• December 12, 2023•Document ID: 10247552

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

  Mfr Comm. #:

  23-NA-219

  Date Added:

  December 21, 2023

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.

  Associated Products (980)

  2024 BrightDrop Zevo2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Bolt EV2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu+ 960 more
  Associated Documents

  • DownloadMC-10247552-0001.pdf↗
• December 8, 2023•Document ID: 10249281

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE

  Mfr Comm. #:

  PIT6097A

  Date Added:

  January 29, 2024

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones.

  Associated Products (96)

  2024 Buick Enclave2024 Buick Encore GX2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Canyon+ 76 more
  Associated Documents

  • DownloadMC-10249281-0001.pdf↗
• December 8, 2023•Document ID: 10247192

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT

  Mfr Comm. #:

  20-NA-132

  Date Added:

  December 15, 2023

  Manufacturer:

  CADILLAC

  Summary

  This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

  Associated Products (614)

  2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Bolt EV2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Silverado+ 594 more
  Associated Documents

  • DownloadMC-10247192-0001.pdf↗
• December 7, 2023•Document ID: 10247194

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  23-NA-214

  Date Added:

  December 15, 2023

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin provides Information on Purge Pump Part Replacement and Purge Part Number Interchange.

  Associated Products (69)

  2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Silverado2024 Chevrolet Trailblazer2024 Chevrolet Traverse2024 Chevrolet Trax2024 GMC Acadia2024 GMC Canyon2024 GMC Sierra2023 Buick Encore GX2023 Buick Envision2023 Cadillac CT4+ 49 more
  Associated Documents

  • DownloadMC-10247194-0001.pdf↗
• December 6, 2023•Document ID: 10249270

  Service Bulletin/Repair Instructions
  EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT

  Mfr Comm. #:

  PIT6097

  Date Added:

  January 29, 2024

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones.

  Associated Products (96)

  2024 Buick Enclave2024 Buick Encore GX2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Canyon+ 76 more
  Associated Documents

  • DownloadMC-10249270-0001.pdf↗
• December 5, 2023•Document ID: 10249267

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER

  Mfr Comm. #:

  PIT5851D

  Date Added:

  January 29, 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 (40)

  2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Chevrolet Corvette2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Sierra2024 GMC Yukon XL2023 Buick Envision2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Chevrolet Corvette2023 Chevrolet Silverado2023 Chevrolet Suburban2023 Chevrolet Tahoe2023 GMC Sierra2023 GMC Yukon2022 Buick Envision+ 20 more
  Associated Documents

  • DownloadMC-10249267-0001.pdf↗
• November 30, 2023•Document ID: 10246485

  Service Bulletin/Repair Instructions
  EQUIPMENT; ELECTRICAL SYSTEM

  Mfr Comm. #:

  20-NA-018

  Date Added:

  December 9, 2023

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information for dealers/technicians on MDI 2 Required When Programming Vehicles with Vehicle Intelligence Platform (VIP).

  Associated Products (59)

  2024 BrightDrop Zevo2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Hummer EV Pickup2024 GMC Hummer EV SUV2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 BrightDrop Zevo2023 Cadillac CT4+ 39 more
  Associated Documents

  • DownloadMC-10246485-0001.pdf↗
• November 27, 2023•Document ID: 10246491

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; POWER TRAIN

  Mfr Comm. #:

  23-NA-210

  Date Added:

  December 9, 2023

  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 (11)

  2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Chevrolet Silverado2024 GMC Sierra2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade2023 Cadillac Escalade ESV2023 Chevrolet Silverado2023 GMC Sierra
  Associated Documents

  • DownloadMC-10246491-0001.pdf↗
• November 17, 2023•Document ID: 10247364

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  PIT5985C

  Date Added:

  December 18, 2023

  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 (49)

  2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Corvette2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 GMC Hummer EV SUV2024 GMC Sierra2024 GMC Yukon XL2023 Buick Envision2023 Cadillac CT42023 Cadillac CT52023 Cadillac Escalade ESV2023 Cadillac Lyriq2023 Chevrolet Colorado2023 Chevrolet Corvette+ 29 more
  Associated Documents

  • DownloadMC-10247364-0001.pdf↗
• November 17, 2023•Document ID: 10245545

  Service Bulletin/Repair Instructions
  WHEELS; STEERING; SUSPENSION

  Mfr Comm. #:

  17-NA-087

  Date Added:

  November 29, 2023

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information on Characteristics of Wide Low Aspect Ratio Tires, Vehicle Pulls Left or Right, Wanders, Follows Depressions in Road Surface, Tramlining.

  Associated Products (63)

  2024 Cadillac CT42024 Cadillac CT52024 Chevrolet Camaro2024 Chevrolet Corvette2023 Cadillac CT42023 Cadillac CT52023 Chevrolet Camaro2023 Chevrolet Corvette2022 Cadillac CT42022 Cadillac CT52022 Chevrolet Camaro2022 Chevrolet Corvette2021 Cadillac CT42021 Cadillac CT52021 Chevrolet Camaro2021 Chevrolet Corvette2020 Cadillac CT42020 Cadillac CT52020 Chevrolet Camaro2020 Chevrolet Corvette+ 43 more
  Associated Documents

  • DownloadMC-10245545-0001.pdf↗
• November 16, 2023•Document ID: 10245559

  Service Bulletin/Repair Instructions
  EQUIPMENT; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  21-NA-135

  Date Added:

  November 29, 2023

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.

  Associated Products (217)

  2024 Buick Enclave2024 Buick Encore2024 Buick Encore GX2024 Buick Envision2024 Buick Envista2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Lyriq2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Bolt EV2024 Chevrolet Camaro2024 Chevrolet Colorado2024 Chevrolet Corvette2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Silverado+ 197 more
  Associated Documents

  • DownloadMC-10245559-0001.pdf↗