Cadillac XT4 Service Bulletins (2025)

239 manufacturer communications on file.

• November 25, 2025•Document ID: 11026062

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6457

  Date Added:

  December 3, 2025

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.

  Associated Products (136)

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  Associated Documents

  • DownloadMC-11026062-0001.pdf↗
• November 20, 2025•Document ID: 11025755

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5214G

  Date Added:

  November 28, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11025755-0001.pdf↗
• November 19, 2025•Document ID: 11025909

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  654.10

  Date Added:

  December 2, 2025

  Manufacturer:

  CHEVROLET

  Summary

  Fixes to help prevent loss of functionality for OnStar, infotainment apps, and connectivity features. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle.

  Associated Products (10)

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  Associated Documents

  • DownloadMC-11025909-0001.pdf↗
• November 13, 2025•Document ID: 11025574

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629A

  Date Added:

  November 17, 2025

  Manufacturer:

  GMC

  Summary

  This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

  Associated Products (76)

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  Associated Documents

  • DownloadMC-11025574-0001.pdf↗
• November 11, 2025•Document ID: 11025572

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629

  Date Added:

  November 17, 2025

  Manufacturer:

  BUICK

  Summary

  This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

  Associated Products (77)

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  Associated Documents

  • DownloadMC-11025572-0001.pdf↗
• October 23, 2025•Document ID: 11024704

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6393F

  Date Added:

  November 2, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.

  Associated Products (34)

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  Associated Documents

  • DownloadMC-11024704-0001.pdf↗
• October 18, 2025•Document ID: 11024460

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6425B

  Date Added:

  October 24, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11024460-0001.pdf↗
• October 17, 2025•Document ID: 11024455

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6425A

  Date Added:

  October 24, 2025

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's

  Associated Products (210)

  2026 Buick Enclave2026 Buick Encore2026 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 Colorado+ 190 more
  Associated Documents

  • DownloadMC-11024455-0001.pdf↗
• October 16, 2025•Document ID: 11024458

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6551A

  Date Added:

  October 24, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues

  Associated Products (176)

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  Associated Documents

  • DownloadMC-11024458-0001.pdf↗
• October 9, 2025•Document ID: 11024448

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6087A

  Date Added:

  October 24, 2025

  Manufacturer:

  CADILLAC

  Summary

  This PI gives the dealer direction on a shudder shake low speed for a possible fluid condition.

  Associated Products (28)

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  Associated Documents

  • DownloadMC-11024448-0001.pdf↗
• October 4, 2025•Document ID: 11024439

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6440

  Date Added:

  October 24, 2025

  Manufacturer:

  GMC

  Summary

  The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.

  Associated Products (210)

  2026 Buick Enclave2026 Buick Encore2026 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 Colorado+ 190 more
  Associated Documents

  • DownloadMC-11024439-0001.pdf↗
• October 4, 2025•Document ID: 11024438

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6393E

  Date Added:

  October 24, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.

  Associated Products (31)

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  Associated Documents

  • DownloadMC-11024438-0001.pdf↗
• October 1, 2025•Document ID: 11023907

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6393D

  Date Added:

  October 6, 2025

  Manufacturer:

  BUICK

  Summary

  This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.

  Associated Products (32)

  2026 Buick Enclave2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Chevrolet Colorado2025 Chevrolet Equinox2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia+ 12 more
  Associated Documents

  • DownloadMC-11023907-0001.pdf↗
• October 1, 2025•Document ID: 11023903

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6411B

  Date Added:

  October 6, 2025

  Manufacturer:

  GMC

  Summary

  This information provides software update information for the K73 Telematics module to correct the symptoms described.

  Associated Products (22)

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  Associated Documents

  • DownloadMC-11023903-0001.pdf↗
• September 15, 2025•Document ID: 11023345

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6087

  Date Added:

  September 25, 2025

  Manufacturer:

  CADILLAC

  Summary

  This PI gives the dealer direction on a shudder shake low speed for a possible fluid condition.

  Associated Products (29)

  2025 Buick Envision2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2024 Buick Envision2024 Cadillac XT42024 Cadillac XT52024 Cadillac XT62024 Chevrolet Blazer2023 Buick Envision2023 Cadillac XT42023 Cadillac XT52023 Cadillac XT62023 Chevrolet Blazer2023 GMC Acadia2022 Buick Envision2022 Cadillac XT42022 Cadillac XT52022 Cadillac XT6+ 9 more
  Associated Documents

  • DownloadMC-11023345-0001.pdf↗
• September 15, 2025•Document ID: 11023342

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6393C

  Date Added:

  September 25, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.

  Associated Products (32)

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  Associated Documents

  • DownloadMC-11023342-0001.pdf↗
• September 9, 2025•Document ID: 11023091

  Other
  UNKNOWN OR OTHER

  Mfr Comm. #:

  13598

  Date Added:

  September 10, 2025

  Manufacturer:

  CHEVROLET

  Summary

  New Vehicle Monitoring Programs Section in IVH

  Associated Products (208)

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  Associated Documents

  • DownloadMC-11023091-0001.pdf↗
• September 3, 2025•Document ID: 11024386

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM; ENGINE

  Mfr Comm. #:

  25-NA-249

  Date Added:

  October 21, 2025

  Manufacturer:

  BUICK

  Summary

  This service bulletin provides the correction to the condition of the Malfunction Indicator Lamp being illuminated and/or the DTC P149E set.

  Associated Products (4)

  2025 Buick Envision2025 Cadillac XT42024 Buick Envision2024 Cadillac XT4
  Associated Documents

  • DownloadMC-11024386-0001.pdf↗
• August 19, 2025•Document ID: 11022130

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6423

  Date Added:

  August 26, 2025

  Manufacturer:

  CADILLAC

  Summary

  Diagnostic Guidance for U3000-97 Long Range Radar Blocked

  Associated Products (29)

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  Associated Documents

  • DownloadMC-11022130-0001.pdf↗
• August 14, 2025•Document ID: 11022084

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902T

  Date Added:

  August 22, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

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  Associated Documents

  • DownloadMC-11022084-0001.pdf↗