Cadillac Lyriq Service Bulletins

1,009 manufacturer communications on file.

• June 11, 2025•Document ID: 11019690

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6552F

  Date Added:

  June 24, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates how to recover the Image Processing Module.

  Associated Products (3)

  2025 Cadillac Lyriq2024 Cadillac Lyriq2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11019690-0001.pdf↗
• June 10, 2025•Document ID: 11019823

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6180A

  Date Added:

  June 29, 2025

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.

  Associated Products (206)

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  Associated Documents

  • DownloadMC-11019823-0001.pdf↗
• June 9, 2025•Document ID: 11019693

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902S

  Date Added:

  June 24, 2025

  Manufacturer:

  CADILLAC

  Summary

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

  Associated Products (206)

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  Associated Documents

  • DownloadMC-11019693-0001.pdf↗
• June 7, 2025•Document ID: 11026104

  Service Bulletin/Repair Instructions
  WHEELS

  Mfr Comm. #:

  25-NA-156

  Date Added:

  December 4, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information on Tire Sidewall Irregularities.

  Associated Products (210)

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  Associated Documents

  • DownloadMC-11026104-0001.pdf↗
• June 5, 2025•Document ID: 11019529

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6592A

  Date Added:

  June 16, 2025

  Manufacturer:

  CADILLAC

  Summary

  A condition my exist with a rattle noise shortly after startup after vehicle has been shut off and that an OTA update was released to resolve the concern.

  Associated Products (1)

  2025 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11019529-0001.pdf↗
• June 2, 2025•Document ID: 11019533

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6362C

  Date Added:

  June 16, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary information communicates to dealership technicians various radio concerns are all related to software and Engineering is currently working on a design improvement.

  Associated Products (17)

  2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Chevrolet Colorado2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Canyon2024 Buick Envision2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Colorado2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Canyon
  Associated Documents

  • DownloadMC-11019533-0001.pdf↗
• June 2, 2025•Document ID: 11018802

  Service Campaign
  ENGINE

  Mfr Comm. #:

  N252502390

  Date Added:

  June 2, 2025

  Manufacturer:

  GMC

  Summary

  Service Update. Certain vehicles listed above may require software updates that improve the customer experience and optimize future over-the-air updates. Dealers will perform a comprehensive software update.

  Associated Products (3)

  2023 Cadillac Lyriq2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11018802-0001.pdf↗
• May 30, 2025•Document ID: 11019075

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5074R

  Date Added:

  June 4, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

  Associated Products (32)

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  Associated Documents

  • DownloadMC-11019075-0001.pdf↗
• May 30, 2025•Document ID: 11019074

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5074R

  Date Added:

  June 4, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

  Associated Products (206)

  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 Equinox+ 186 more
  Associated Documents

  • DownloadMC-11019074-0001.pdf↗
• May 30, 2025•Document ID: 11019073

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5074R

  Date Added:

  June 4, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

  Associated Products (206)

  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 Equinox+ 186 more
  Associated Documents

  • DownloadMC-11019073-0001.pdf↗
• May 30, 2025•Document ID: 11019072

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5074R

  Date Added:

  June 4, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

  Associated Products (206)

  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 Equinox+ 186 more
  Associated Documents

  • DownloadMC-11019072-0001.pdf↗
• May 28, 2025•Document ID: 11018717

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N25-250020

  Date Added:

  May 30, 2025

  Manufacturer:

  CADILLAC

  Summary

  •Improves how center display adjusts to lighting changes. •Improved warnings when a key is missing. •Better tuning for interior lighting in Stealth mode. •Improvements to automatic low beam headlamp logic. •Smoother dimming and transitions from day to night. 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. Do not service your vehicle during installation.

  Associated Products (2)

  2025 Cadillac Lyriq2024 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11018717-0001.pdf↗
• May 27, 2025•Document ID: 11019071

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP5981F

  Date Added:

  June 4, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates ordering process for the front and rear drive units are on restriction for all listed EV vehicles for engineering review.

  Associated Products (10)

  2026 Cadillac Vistiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 GMC Hummer EV Pickup2024 Cadillac Lyriq2024 GMC Hummer EV Pickup2023 Cadillac Lyriq2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11019071-0001.pdf↗
• May 22, 2025•Document ID: 11018534

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N252503350

  Date Added:

  May 22, 2025

  Manufacturer:

  CADILLAC

  Summary

  Certain vehicles may have a condition in which the Virtual Key Module (VKM) could malfunction and leave the wireless door lock key card inoperable. Dealers will reprogram the VKM. 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.

  Associated Products (1)

  2025 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11018534-0001.pdf↗
• May 22, 2025•Document ID: 11018659

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5966E

  Date Added:

  May 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.

  Associated Products (205)

  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 Equinox+ 185 more
  Associated Documents

  • DownloadMC-11018659-0001.pdf↗
• May 20, 2025•Document ID: 11018650

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6384

  Date Added:

  May 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information is for service technicians who come across this concern to verify the operation in GDS2 and that engineering is aware of this issue and this PI will be updated to a bulletin once a determination has been made.

  Associated Products (2)

  2026 Cadillac Lyriq2026 Cadillac Vistiq
  Associated Documents

  • DownloadMC-11018650-0001.pdf↗
• May 20, 2025•Document ID: 11018647

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6356B

  Date Added:

  May 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates A vehicle may be encountered with super cruise inop due to not seeing drivers face clearly. The tech is directed to inspect the Infrared LED's on the steering wheel and replace the wheel if necessary.

  Associated Products (25)

  2026 Cadillac Celestiq2026 Cadillac Vistiq2025 Buick Enclave2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Optiq2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Chevrolet Traverse2024 GMC Acadia2023 Cadillac Escalade2023 Cadillac Escalade ESV+ 5 more
  Associated Documents

  • DownloadMC-11018647-0001.pdf↗
• May 19, 2025•Document ID: 11018718

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N25-250020

  Date Added:

  May 30, 2025

  Manufacturer:

  CADILLAC

  Summary

  •Improves how center display adjusts to lighting changes. •Improved warnings when a key is missing. •Better tuning for interior lighting in Stealth mode. •Improvements to automatic low beam headlamp logic. •Smoother dimming and transitions from day to night. 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. Do not service your vehicle during installation.

  Associated Products (1)

  2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11018718-0001.pdf↗
• May 17, 2025•Document ID: 11018491

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6537C

  Date Added:

  May 20, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that Engineering is working on a resolution.

  Associated Products (3)

  2025 Cadillac Lyriq2024 Cadillac Lyriq2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11018491-0001.pdf↗
• May 17, 2025•Document ID: 11023367

  Service Bulletin/Repair Instructions
  FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM

  Mfr Comm. #:

  22-NA-083

  Date Added:

  September 27, 2025

  Manufacturer:

  CADILLAC

  Summary

  This service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty.

  Associated Products (14)

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  Associated Documents

  • DownloadMC-11023367-0001.pdf↗