Cadillac Lyriq Service Bulletins (2025)

394 manufacturer communications on file.

• October 24, 2026•Document ID: 11038744

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6368F

  Date Added:

  October 29, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener and to replace the opener with a new updated part.

  Associated Products (57)

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  Associated Documents

  • DownloadMC-11038744-0001.pdf↗
• October 15, 2026•Document ID: 11038835

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Connectivity 2026.3

  Date Added:

  November 1, 2026

  Manufacturer:

  BRIGHTDROP

  Summary

  This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior.

  Associated Products (5)

  2026 Chevrolet BrightDrop2025 Cadillac Lyriq2025 Chevrolet BrightDrop2024 BrightDrop Zevo2024 Chevrolet Equinox
  Associated Documents

  • DownloadMC-11038835-0001.pdf↗
• October 14, 2026•Document ID: 11038816

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Infotainment 2026.3

  Date Added:

  October 31, 2026

  Manufacturer:

  CADILLAC

  Summary

  • More responsive map controls when switching views • Trailer Theft Alert settings are saved between drives • More reliable access to on-screen controls for temperature, fan speed, and heated seats • Improvements that help prevent the center display from freezing or unexpectedly losing audio • Improvements to system responsiveness • Improvements to camera image clarity • Fixes to prevent blank screens and audio drop-outs • Improvements to vehicle software update installation

  Associated Products (2)

  2025 Cadillac Lyriq2024 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11038816-0001.pdf↗
• October 12, 2026•Document ID: 11038824

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Energy 2026.3

  Date Added:

  November 1, 2026

  Manufacturer:

  GMC

  Summary

  • Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages

  Associated Products (8)

  2025 Cadillac Lyriq2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Sierra2024 Cadillac Lyriq2024 Chevrolet Equinox2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11038824-0001.pdf↗
• October 8, 2026•Document ID: 11038821

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  Gateway 2026.3

  Date Added:

  October 31, 2026

  Manufacturer:

  GMC

  Summary

  This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior.

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  Associated Documents

  • DownloadMC-11038821-0001.pdf↗
• October 5, 2026•Document ID: 11038834

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  663.10/663.30

  Date Added:

  November 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  • Digital key will be available in the myCadillac mobile app a few minutes after the update completes. You can use your smartphone or smartwatch to lock, unlock, and drive your vehicle without your key fob. • Digital key only requires an active OnStar account, no paid plan is needed. If digital key is not available within 24 hours after the update completes, contact OnStar. For more information, visit cadillac.com/support and search “digital key.”

  Associated Products (5)

  2027 Cadillac Optiq2027 Cadillac Vistiq2026 Cadillac Optiq2026 Cadillac Vistiq2025 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11038834-0001.pdf↗
• September 28, 2026•Document ID: 11038136

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6457C

  Date Added:

  October 5, 2026

  Manufacturer:

  CHEVROLET

  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.

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  Associated Documents

  • DownloadMC-11038136-0001.pdf↗
• September 28, 2026•Document ID: 11038132

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6540K

  Date Added:

  October 5, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealers a procedure to reset the radio.

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  Associated Documents

  • DownloadMC-11038132-0001.pdf↗
• September 28, 2026•Document ID: 11037797

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6368E

  Date Added:

  October 2, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.

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  Associated Documents

  • DownloadMC-11037797-0001.pdf↗
• September 26, 2026•Document ID: 11037555

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5698F

  Date Added:

  September 30, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

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  Associated Documents

  • DownloadMC-11037555-0001.pdf↗
• September 15, 2026•Document ID: 11037446

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6426C

  Date Added:

  September 22, 2026

  Manufacturer:

  GMC

  Summary

  If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.

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  Associated Documents

  • DownloadMC-11037446-0001.pdf↗
• September 10, 2026•Document ID: 11037320

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629F

  Date Added:

  September 16, 2026

  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

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  Associated Documents

  • DownloadMC-11037320-0001.pdf↗
• September 4, 2026•Document ID: 11037253

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902W

  Date Added:

  September 10, 2026

  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-11037253-0001.pdf↗
• September 2, 2026•Document ID: 11037256

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6544

  Date Added:

  September 10, 2026

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven. When a repair is available, this PI will be updated.

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  Associated Documents

  • DownloadMC-11037256-0001.pdf↗
• September 2, 2026•Document ID: 11036718

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6583J

  Date Added:

  September 2, 2026

  Manufacturer:

  CADILLAC

  Summary

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

  Associated Products (8)

  2025 Cadillac Celestiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Silverado2025 GMC Sierra2024 Cadillac Lyriq2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11036718-0001.pdf↗
• August 27, 2026•Document ID: 11036709

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503E

  Date Added:

  September 2, 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.

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  Associated Documents

  • DownloadMC-11036709-0001.pdf↗
• August 27, 2026•Document ID: 11036690

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6541

  Date Added:

  September 2, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication

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  Associated Documents

  • DownloadMC-11036690-0001.pdf↗
• August 21, 2026•Document ID: 11036400

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6503D

  Date Added:

  August 27, 2026

  Manufacturer:

  CADILLAC

  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.

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  Associated Documents

  • DownloadMC-11036400-0001.pdf↗
• August 20, 2026•Document ID: 11036392

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6551C

  Date Added:

  August 27, 2026

  Manufacturer:

  CADILLAC

  Summary

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

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  Associated Documents

  • DownloadMC-11036392-0001.pdf↗
• August 20, 2026•Document ID: 11036308

  Service Campaign
  POWER TRAIN

  Mfr Comm. #:

  N252502891-01

  Date Added:

  August 20, 2026

  Manufacturer:

  CADILLAC

  Summary

  Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module.

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  Associated Documents

  • DownloadMC-11036308-0001.pdf↗