Cadillac Lyriq Service Bulletins (2024)

725 manufacturer communications on file.

• May 13, 2025•Document ID: 11018472

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6378

  Date Added:

  May 20, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communicates to dealership technicians to not replace any parts at this time for the error 302. They can communicate to the customer for the work around at this time.

  Associated Products (10)

  2025 Cadillac Lyriq2025 Chevrolet Blazer2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Sierra2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Silverado2024 GMC Sierra
  Associated Documents

  • DownloadMC-11018472-0001.pdf↗
• May 13, 2025•Document ID: 11018481

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6356A

  Date Added:

  May 20, 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 (31)

  2026 Cadillac Vistiq2025 Buick Enclave2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Blazer2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL2024 Cadillac Escalade+ 11 more
  Associated Documents

  • DownloadMC-11018481-0001.pdf↗
• May 13, 2025•Document ID: 11018475

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6362B

  Date Added:

  May 20, 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 (24)

  2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Chevrolet Colorado2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Canyon2025 GMC Sierra2024 Buick Envision2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Equinox2024 Chevrolet Silverado+ 4 more
  Associated Documents

  • DownloadMC-11018475-0001.pdf↗
• May 9, 2025•Document ID: 11023266

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

  Mfr Comm. #:

  PIE0836

  Date Added:

  September 23, 2025

  Manufacturer:

  CADILLAC

  Summary

  This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) illuminated on the Driver Information Center (DIC) and/or a no-start condition following a recent vehicle update.

  Associated Products (20)

  2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Sierra2024 BrightDrop Zevo2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Silverado2024 GMC Hummer EV Pickup2024 GMC Sierra2023 BrightDrop Zevo2023 Cadillac Lyriq2023 GMC Hummer EV Pickup2022 GMC Hummer EV Pickup
  Associated Documents

  • DownloadMC-11023266-0001.pdf↗
• May 8, 2025•Document ID: 11023051

  Service Bulletin/Repair Instructions
  FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

  Mfr Comm. #:

  25-NA-118

  Date Added:

  September 10, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.

  Associated Products (257)

  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 BrightDrop2026 Chevrolet Colorado+ 237 more
  Associated Documents

  • DownloadMC-11023051-0001.pdf↗
• May 6, 2025•Document ID: 11018430

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6215B

  Date Added:

  May 19, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.

  Associated Products (28)

  2026 Cadillac Vistiq2026 Chevrolet Equinox2026 GMC Terrain2025 Cadillac Escalade2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL2024 BrightDrop Zevo2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Equinox+ 8 more
  Associated Documents

  • DownloadMC-11018430-0001.pdf↗
• May 5, 2025•Document ID: 11018420

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6043A

  Date Added:

  May 19, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communicates the steps on diagnosing certain EV vehicles with a blank IPC screen, no charge or start concerns.  Information includes steps to resolve for various symptoms are provided to the dealership technician.

  Associated Products (9)

  2026 Cadillac Vistiq2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Blazer2025 Chevrolet Equinox2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Equinox2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11018420-0001.pdf↗
• May 5, 2025•Document ID: 11018419

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6583D

  Date Added:

  May 19, 2025

  Manufacturer:

  CADILLAC

  Summary

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

  Associated Products (3)

  2025 Cadillac Lyriq2024 Cadillac Lyriq2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11018419-0001.pdf↗
• May 5, 2025•Document ID: 11018422

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6018J

  Date Added:

  May 19, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates the possibility of a resetting of some information modules prior to delivery.

  Associated Products (9)

  2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Silverado2024 GMC Canyon2023 Cadillac Lyriq2023 Chevrolet Colorado2023 GMC Canyon
  Associated Documents

  • DownloadMC-11018422-0001.pdf↗
• May 1, 2025•Document ID: 11017374

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N232427510-01

  Date Added:

  May 1, 2025

  Manufacturer:

  CADILLAC

  Summary

  Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Powertrain Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.

  Associated Products (48)

  2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Cadillac Lyriq2024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Hummer EV Pickup2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT42023 Cadillac CT5+ 28 more
  Associated Documents

  • DownloadMC-11017374-0001.pdf↗
• April 29, 2025•Document ID: 11017784

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6565A

  Date Added:

  May 5, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with these concerns that engineering is aware and this PI will turn into a bulletin once a repair is available.

  Associated Products (3)

  2025 Cadillac Lyriq2024 Cadillac Lyriq2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11017784-0001.pdf↗
• April 29, 2025•Document ID: 11017782

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6021A

  Date Added:

  May 5, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp) illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge. In these instances, it is advised to perform BECM (Battery Energy Control Module) programming and execute the Manual Reset Shunt process. This applies when ALL of the following DTCs are set as current or history: P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, and U35AF.

  Associated Products (9)

  2026 Cadillac Vistiq2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Blazer2025 Chevrolet Equinox2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Equinox2023 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11017782-0001.pdf↗
• April 29, 2025•Document ID: 11017332

  Service Campaign
  UNKNOWN OR OTHER

  Mfr Comm. #:

  N232427510

  Date Added:

  April 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  Certain 2018-2024 model year vehicles are receiving a software enhancement for SuperCruise. Dealers will update the Engine Control Module, Hybrid Powertrain Control Module 2 (HPCM2) or Drive Motor Control Module.

  Associated Products (49)

  2025 Chevrolet Silverado2024 Buick Envision2024 Cadillac CT42024 Cadillac CT52024 Cadillac Escalade2024 Cadillac Escalade ESV2024 Cadillac Lyriq2024 Cadillac XT62024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Silverado2024 Chevrolet Suburban2024 Chevrolet Tahoe2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Hummer EV Pickup2024 GMC Sierra2024 GMC Yukon2024 GMC Yukon XL2023 Cadillac CT4+ 29 more
  Associated Documents

  • DownloadMC-11017332-0001.pdf↗
• April 25, 2025•Document ID: 11019624

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

  Mfr Comm. #:

  24-NA-143

  Date Added:

  June 18, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.

  Associated Products (23)

  2026 Cadillac Lyriq2026 Cadillac Vistiq2025 Cadillac Celestiq2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Hummer EV Pickup2025 GMC Sierra2024 BrightDrop Zevo2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Equinox2024 Chevrolet Silverado2024 GMC Hummer EV Pickup2024 GMC Sierra2023 BrightDrop Zevo+ 3 more
  Associated Documents

  • DownloadMC-11019624-0001.pdf↗
• April 24, 2025•Document ID: 11019545

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  22-NA-242

  Date Added:

  June 16, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.

  Associated Products (146)

  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 BrightDrop2026 Chevrolet Colorado+ 126 more
  Associated Documents

  • DownloadMC-11019545-0001.pdf↗
• April 23, 2025•Document ID: 11019548

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  24-NA-113

  Date Added:

  June 16, 2025

  Manufacturer:

  GMC

  Summary

  This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.

  Associated Products (34)

  2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 GMC Terrain2025 Cadillac Celestiq2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Sierra2025 GMC Yukon2025 GMC Yukon XL+ 14 more
  Associated Documents

  • DownloadMC-11019548-0001.pdf↗
• April 18, 2025•Document ID: 11017311

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6248A

  Date Added:

  April 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates to GM technicians to not replace any parts at this time if they come across this concern to reset the radio at this time. The PI will be updated or replaced with TSB once a determination has been made.

  Associated Products (22)

  2025 Buick Enclave2025 Cadillac CT52025 Cadillac Lyriq2025 Chevrolet Blazer2025 Chevrolet Colorado2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Traverse2025 GMC Canyon2025 GMC Sierra2024 Cadillac Lyriq2024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Equinox2024 Chevrolet Silverado2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Canyon2024 GMC Sierra2023 Cadillac Lyriq+ 2 more
  Associated Documents

  • DownloadMC-11017311-0001.pdf↗
• April 18, 2025•Document ID: 11017310

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6317B

  Date Added:

  April 29, 2025

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary information communicates if a customer and service tech encounter a gear display after a radio update, to replace the A11 radio for this concern.

  Associated Products (23)

  2025 Buick Enclave2025 Cadillac CT52025 Cadillac Escalade IQ2025 Cadillac XT42025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Equinox2025 Chevrolet Silverado2025 GMC Sierra2024 BrightDrop Zevo2024 Cadillac Lyriq2024 Cadillac XT42024 Chevrolet Blazer2024 Chevrolet Colorado2024 Chevrolet Equinox2024 Chevrolet Silverado2024 Chevrolet Traverse2024 GMC Acadia2024 GMC Canyon+ 3 more
  Associated Documents

  • DownloadMC-11017310-0001.pdf↗
• April 17, 2025•Document ID: 11019516

  Service Bulletin/Repair Instructions
  STEERING; SUSPENSION; POWER TRAIN

  Mfr Comm. #:

  PI0281L

  Date Added:

  June 12, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.

  Associated Products (507)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac Celestiq2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette+ 487 more
  Associated Documents

  • DownloadMC-11019516-0001.pdf↗
• April 16, 2025•Document ID: 11017274

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6335A

  Date Added:

  April 28, 2025

  Manufacturer:

  BUICK

  Summary

  This Preliminary information communicates to GM technicians to not replace any parts at this time if they come across this concern. It is due to software and will need to reprogram the A11 radio module to correct this.

  Associated Products (36)

  2026 Chevrolet BrightDrop2025 Buick Enclave2025 Buick Envision2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac XT42025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Equinox2025 Chevrolet Silverado2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Sierra2025 GMC Terrain2025 GMC Yukon+ 16 more
  Associated Documents

  • DownloadMC-11017274-0001.pdf↗