Cadillac Lyriq Service Bulletins (2026)

166 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↗
• 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.

  Associated Products (173)

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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.

  Associated Products (63)

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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.

  Associated Products (619)

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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.

  Associated Products (53)

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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

  Associated Products (95)

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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.

  Associated Products (751)

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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.

  Associated Products (57)

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  Associated Documents

  • DownloadMC-11037256-0001.pdf↗
• August 28, 2026•Document ID: 11036715

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6533B

  Date Added:

  September 2, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.

  Associated Products (25)

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  Associated Documents

  • DownloadMC-11036715-0001.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

  Associated Products (130)

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  Associated Documents

  • DownloadMC-11036690-0001.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 14, 2026•Document ID: 11036222

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6533A

  Date Added:

  August 17, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.

  Associated Products (26)

  2027 Buick Enclave2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Vistiq2027 Chevrolet Bolt EV2027 Chevrolet Traverse2027 GMC Acadia2026 Buick Enclave2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse+ 6 more
  Associated Documents

  • DownloadMC-11036222-0001.pdf↗
• August 5, 2026•Document ID: 11036195

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6368D

  Date Added:

  August 14, 2026

  Manufacturer:

  CHEVROLET

  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.

  Associated Products (51)

  2026 Buick Enclave2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Blazer2026 Chevrolet Equinox2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Sierra2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave+ 31 more
  Associated Documents

  • DownloadMC-11036195-0001.pdf↗
• August 4, 2026•Document ID: 11036197

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6658

  Date Added:

  August 14, 2026

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information informs customers and technicians of the short term work around to restore the proper Themes operation. No parts should be replaced at this time.

  Associated Products (7)

  2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2026 Cadillac CT52026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq
  Associated Documents

  • DownloadMC-11036197-0001.pdf↗
• August 3, 2026•Document ID: 11036194

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6512A

  Date Added:

  August 14, 2026

  Manufacturer:

  BUICK

  Summary

  This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.

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  Associated Documents

  • DownloadMC-11036194-0001.pdf↗
• July 24, 2026•Document ID: 11035351

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6446A

  Date Added:

  July 30, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.

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  Associated Documents

  • DownloadMC-11035351-0001.pdf↗
• July 21, 2026•Document ID: 11035439

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.60

  Date Added:

  August 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  • Improvements to Super Cruise disengagement alerts. • Improvements to the availability of Super Cruise. • Improvements to driver attention monitoring to help reduce unnecessary OnStar escalation calls. • Improvements to Super Cruise lane merging performance. • Improvements to the responsiveness of rear view camera display. • Improvements to the performance of Brake Assist. • Fixes to help ensure proper Super Cruise lane change functionality. •Improved visuals for Lane Keep Assist feature

  Associated Products (1)

  2026 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11035439-0001.pdf↗
• July 21, 2026•Document ID: 11035340

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5099J

  Date Added:

  July 29, 2026

  Manufacturer:

  CHEVROLET

  Summary

  PI to help diagnose A/C concern

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  Associated Documents

  • DownloadMC-11035340-0001.pdf↗
• July 14, 2026•Document ID: 11035438

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.40

  Date Added:

  August 1, 2026

  Manufacturer:

  CADILLAC

  Summary

  • Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics

  Associated Products (1)

  2026 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11035438-0001.pdf↗