Cadillac Celestiq Service Bulletins

120 manufacturer communications on file.

• April 23, 2026•Document ID: 11031745

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629D

  Date Added:

  April 30, 2026

  Manufacturer:

  CADILLAC

  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-11031745-0001.pdf↗
• April 21, 2026•Document ID: 11031926

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.40

  Date Added:

  May 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  • Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. • Cabin Glance, a new feature that displays a live feed of the seating area on your infotainment screen. This allows you to check on passengers, such as kids or pets.

  Associated Products (1)

  2025 Cadillac Celestiq
  Associated Documents

  • DownloadMC-11031926-0001.pdf↗
• April 21, 2026•Document ID: 11031924

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.30

  Date Added:

  May 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  Fixes to help ensure successful vehicle software updates.

  Associated Products (1)

  2025 Cadillac Celestiq
  Associated Documents

  • DownloadMC-11031924-0001.pdf↗
• April 16, 2026•Document ID: 11031366

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N262547330

  Date Added:

  April 17, 2026

  Manufacturer:

  GMC

  Summary

  Certain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state. Dealers are to reprogram the Telematic Control Module. Important: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.

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  Associated Documents

  • DownloadMC-11031366-0001.pdf↗
• April 14, 2026•Document ID: 11031514

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503

  Date Added:

  April 23, 2026

  Manufacturer:

  GMC

  Summary

  This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.

  Associated Products (101)

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  Associated Documents

  • DownloadMC-11031514-0001.pdf↗
• April 1, 2026•Document ID: 11030974

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT3271Q

  Date Added:

  April 7, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information communicates information about how to determine if a wheel and tires size change is available.

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11030974-0001.pdf↗
• March 19, 2026•Document ID: 11030194

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6583H

  Date Added:

  March 24, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates how to move U018B from Current to History.

  Associated Products (6)

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  Associated Documents

  • DownloadMC-11030194-0001.pdf↗
• March 17, 2026•Document ID: 11030529

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.10

  Date Added:

  April 2, 2026

  Manufacturer:

  CADILLAC

  Summary

  Fixes to help prevent loss of functionality for OnStar, infotainment apps, and connectivity features.

  Associated Products (1)

  2025 Cadillac Celestiq
  Associated Documents

  • DownloadMC-11030529-0001.pdf↗
• March 9, 2026•Document ID: 11030092

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6104

  Date Added:

  March 17, 2026

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11030092-0001.pdf↗
• March 9, 2026•Document ID: 11030091

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902V

  Date Added:

  March 17, 2026

  Manufacturer:

  BUICK

  Summary

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

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11030091-0001.pdf↗
• March 5, 2026•Document ID: 11029955

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6394E

  Date Added:

  March 11, 2026

  Manufacturer:

  GMC

  Summary

  A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.

  Associated Products (39)

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  Associated Documents

  • DownloadMC-11029955-0001.pdf↗
• March 5, 2026•Document ID: 11029949

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629C

  Date Added:

  March 11, 2026

  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)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Trailblazer2026 Chevrolet Traverse2026 Chevrolet Trax2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup+ 56 more
  Associated Documents

  • DownloadMC-11029949-0001.pdf↗
• March 3, 2026•Document ID: 11029444

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N252541510

  Date Added:

  March 3, 2026

  Manufacturer:

  CADILLAC

  Summary

  Certain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified. Dealers are to provide the customer with the latest design charging adapter.

  Associated Products (25)

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  Associated Documents

  • DownloadMC-11029444-0001.pdf↗
• March 2, 2026•Document ID: 11029950

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6425D

  Date Added:

  March 11, 2026

  Manufacturer:

  BUICK

  Summary

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

  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-11029950-0001.pdf↗
• February 26, 2026•Document ID: 11029323

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6394D

  Date Added:

  March 3, 2026

  Manufacturer:

  BUICK

  Summary

  A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.

  Associated Products (40)

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  Associated Documents

  • DownloadMC-11029323-0001.pdf↗
• February 20, 2026•Document ID: 11028942

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6456D

  Date Added:

  February 23, 2026

  Manufacturer:

  BUICK

  Summary

  This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.

  Associated Products (68)

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  Associated Documents

  • DownloadMC-11028942-0001.pdf↗
• February 17, 2026•Document ID: 11028937

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6394C

  Date Added:

  February 23, 2026

  Manufacturer:

  CHEVROLET

  Summary

  A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.

  Associated Products (41)

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  Associated Documents

  • DownloadMC-11028937-0001.pdf↗
• January 29, 2026•Document ID: 11027944

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6638A

  Date Added:

  February 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed limit sign displayed on instrument cluster.

  Associated Products (23)

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  Associated Documents

  • DownloadMC-11027944-0001.pdf↗
• January 28, 2026•Document ID: 11027946

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6638

  Date Added:

  February 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed limit sign displayed on instrument cluster.

  Associated Products (12)

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  Associated Documents

  • DownloadMC-11027946-0001.pdf↗
• January 28, 2026•Document ID: 11027936

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6478

  Date Added:

  February 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to the field about a normal condition about a message that appears when using a NFC card to start the vehicle when a key fob or a digital key device is not present.

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  Associated Documents

  • DownloadMC-11027936-0001.pdf↗