Cadillac CT6 Service Bulletins (2020)

754 manufacturer communications on file.

• April 22, 2025•Document ID: 11017774

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6352B

  Date Added:

  May 5, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to inspect the LVDS cable connections if unable to learn the Night Vision camera.

  Associated Products (9)

  2021 Cadillac XT52021 Cadillac XT62020 Cadillac CT62020 Cadillac XT52020 Cadillac XT62019 Cadillac CT62018 Cadillac CT62017 Cadillac CT62016 Cadillac CT6
  Associated Documents

  • DownloadMC-11017774-0001.pdf↗
• April 18, 2025•Document ID: 11019503

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  25-NA-100

  Date Added:

  June 12, 2025

  Manufacturer:

  GMC

  Summary

  This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000-mile Emission Select State Component Limited Warranty.

  Associated Products (344)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Corvette2026 Chevrolet Equinox2026 Chevrolet Express2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Trailblazer+ 324 more
  Associated Documents

  • DownloadMC-11019503-0001.pdf↗
• April 17, 2025•Document ID: 11019516

  Service Bulletin/Repair Instructions
  STEERING; SUSPENSION; POWER TRAIN

  Mfr Comm. #:

  PI0281L

  Date Added:

  June 12, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.

  Associated Products (507)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac Celestiq2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette+ 487 more
  Associated Documents

  • DownloadMC-11019516-0001.pdf↗
• April 12, 2025•Document ID: 11016990

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5551R

  Date Added:

  April 15, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting.  This is normal when the FAB has been set to  "Alert".

  Associated Products (232)

  2025 Buick Enclave2025 Buick Envista2025 Cadillac CT42025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Equinox2025 Chevrolet Malibu2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 Chevrolet Trailblazer2025 Chevrolet Traverse2025 Chevrolet Trax+ 212 more
  Associated Documents

  • DownloadMC-11016990-0001.pdf↗
• April 10, 2025•Document ID: 11019017

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  24-NA-229

  Date Added:

  June 3, 2025

  Manufacturer:

  CADILLAC

  Summary

  This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.

  Associated Products (171)

  2025 Buick Enclave2025 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 Express2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 Chevrolet Traverse+ 151 more
  Associated Documents

  • DownloadMC-11019017-0001.pdf↗
• April 8, 2025•Document ID: 11017839

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  07-00-89-037W

  Date Added:

  May 5, 2025

  Manufacturer:

  GMC

  Summary

  This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.

  Associated Products (581)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Colorado+ 561 more
  Associated Documents

  • DownloadMC-11017839-0001.pdf↗
• April 3, 2025•Document ID: 11017595

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  25-NA-087

  Date Added:

  May 2, 2025

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.

  Associated Products (543)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Colorado+ 523 more
  Associated Documents

  • DownloadMC-11017595-0001.pdf↗
• March 31, 2025•Document ID: 11017244

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  13-08-116-001K

  Date Added:

  April 25, 2025

  Manufacturer:

  CADILLAC

  Summary

  The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

  Associated Products (581)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Colorado+ 561 more
  Associated Documents

  • DownloadMC-11017244-0001.pdf↗
• March 25, 2025•Document ID: 11017263

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  25-NA-052

  Date Added:

  April 28, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.

  Associated Products (518)

  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 Express2025 Chevrolet Malibu2025 Chevrolet Silverado2025 Chevrolet Suburban+ 498 more
  Associated Documents

  • DownloadMC-11017263-0001.pdf↗
• March 24, 2025•Document ID: 11016152

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6359

  Date Added:

  April 1, 2025

  Manufacturer:

  CADILLAC

  Summary

  "This Preliminary information communicates Verify that WIFI settings are turned on in the radio so the MAP module can get a signal to update over the air maps. If WIFI is turned on follow SI diagnostics."

  Associated Products (8)

  2025 Cadillac XT62024 Cadillac XT62023 Cadillac XT62022 Cadillac XT62021 Cadillac XT62020 Cadillac CT62019 Cadillac CT62018 Cadillac CT6
  Associated Documents

  • DownloadMC-11016152-0001.pdf↗
• March 21, 2025•Document ID: 11017207

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  24-NA-098

  Date Added:

  April 24, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

  Associated Products (464)

  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 Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox+ 444 more
  Associated Documents

  • DownloadMC-11017207-0001.pdf↗
• March 21, 2025•Document ID: 11017173

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM; SERVICE BRAKES; STEERING

  Mfr Comm. #:

  25-NA-065

  Date Added:

  April 24, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.

  Associated Products (496)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Corvette+ 476 more
  Associated Documents

  • DownloadMC-11017173-0001.pdf↗
• March 21, 2025•Document ID: 11015824

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N242480630

  Date Added:

  March 21, 2025

  Manufacturer:

  CHEVROLET

  Summary

  General Motors has decided that a defect which relates to motor vehicle safety may exist in certain: 2019 – 2020 model year Cadillac CT6, 2020 – 2021 model year Cadillac CT4 and CT5, and 2020 – 2022 model year Chevrolet Camaro vehicles equipped with a 10-speed transmission. A transmission control valve in some of these vehicles may be susceptible to excess wear over time, resulting in a gradual loss of pressure within the valve that can cause harsh shifting. In rare cases, the wheels may experience a momentary lock up. If the wheels lock-up momentarily while driving, there is increased risk of a crash. Dealers will install new transmission control module software that will monitor valve performance and detect excess wear approximately 10,000 miles (16,000 km) before a wheel lock up condition could occur. Once detected, the transmission will be limited to fifth gear, preventing the possibility of a wheel lock up condition, which occurs in a downshift from eighth gear. A service engine light and reduced propulsion message will also display in the instrument panel.

  Associated Products (5)

  2022 Chevrolet Camaro2021 Chevrolet Camaro2020 Cadillac CT62020 Chevrolet Camaro2019 Cadillac CT6
  Associated Documents

  • DownloadMC-11015824-0001.pdf↗
• March 14, 2025•Document ID: 11017016

  Service Bulletin/Repair Instructions
  WHEELS

  Mfr Comm. #:

  08-03-10-006I

  Date Added:

  April 15, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides a procedure on how to clean and resurface aluminum wheel bead seats for vehicles that have the condition of Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion.

  Associated Products (545)

  2026 Cadillac Vistiq2025 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 Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette+ 525 more
  Associated Documents

  • DownloadMC-11017016-0001.pdf↗
• March 14, 2025•Document ID: 11016948

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  23-NA-164

  Date Added:

  April 11, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides repair information to correct a customer concern of Vehicle Will Lock and Unlock (Active Functions Work) but Will Not Crank or Start (Loss of Passive Functions Do Not Work).

  Associated Products (98)

  2025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Malibu2025 Chevrolet Trailblazer2024 Buick Enclave2024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Camaro2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Trailblazer2024 Chevrolet Traverse2024 GMC Terrain2023 Buick Enclave2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer+ 78 more
  Associated Documents

  • DownloadMC-11016948-0001.pdf↗
• March 13, 2025•Document ID: 11017035

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER; ELECTRICAL SYSTEM

  Mfr Comm. #:

  23-NA-165

  Date Added:

  April 15, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides repair information to correct a customer concern of Vehicle Will Not Lock and Unlock (Loss of Active Functions) Crank or Start (Loss of Passive Functions) with DTC P0513 Set.

  Associated Products (92)

  2025 Cadillac XT52025 Cadillac XT62025 Chevrolet Malibu2025 Chevrolet Trailblazer2024 Buick Enclave2024 Cadillac XT52024 Cadillac XT62024 Chevrolet Camaro2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Trailblazer2024 Chevrolet Traverse2024 GMC Terrain2023 Buick Enclave2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Camaro2023 Chevrolet Equinox2023 Chevrolet Malibu+ 72 more
  Associated Documents

  • DownloadMC-11017035-0001.pdf↗
• March 13, 2025•Document ID: 11016946

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  23-NA-163

  Date Added:

  April 10, 2025

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides repair information to correct a customer concern of No Crank, No Start, Quick Start/Stall, No FOB Detected, Key FOBs Inoperative, B3924 00, B3925 00, B3926 00, B3927 00, B3928 00 Set.

  Associated Products (99)

  2025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Malibu2025 Chevrolet Trailblazer2024 Buick Enclave2024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Camaro2024 Chevrolet Equinox2024 Chevrolet Malibu2024 Chevrolet Trailblazer2024 Chevrolet Traverse2024 GMC Terrain2023 Buick Enclave2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer+ 79 more
  Associated Documents

  • DownloadMC-11016946-0001.pdf↗
• March 12, 2025•Document ID: 11017031

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  15-06-03-001F

  Date Added:

  April 15, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.

  Associated Products (581)

  2026 Cadillac Vistiq2025 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 Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette+ 561 more
  Associated Documents

  • DownloadMC-11017031-0001.pdf↗
• March 7, 2025•Document ID: 11015336

  Service Campaign
  POWER TRAIN

  Mfr Comm. #:

  N242480631

  Date Added:

  March 7, 2025

  Manufacturer:

  CADILLAC

  Summary

  Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. This special coverage covers vehicles that return after TCM Update Product Safety N242480630 and have P0747 condition described above for a period of 15 years or 150,000 miles (240,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after March 6, 2025, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to March 6, 2025, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer.

  Associated Products (9)

  2022 Chevrolet Camaro2021 Cadillac CT42021 Cadillac CT52021 Chevrolet Camaro2020 Cadillac CT42020 Cadillac CT52020 Cadillac CT62020 Chevrolet Camaro2019 Cadillac CT6
  Associated Documents

  • DownloadMC-11015336-0001.pdf↗
• March 5, 2025•Document ID: 11015567

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  17-NA-073

  Date Added:

  March 12, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

  Associated Products (548)

  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 Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Express+ 528 more
  Associated Documents

  • DownloadMC-11015567-0001.pdf↗