Cadillac Lyriq Service Bulletins (2023)
799 manufacturer communications on file.
- September 26, 2026•Document ID: 11037555Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT5698F
- Date Added:
- September 30, 2026
- Manufacturer:
- CHEVROLET
SummaryThis PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
Associated Products (224)2027 Buick Enclave2027 Buick Encore GX2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Equinox2027 Chevrolet Tahoe2027 Chevrolet Trailblazer2027 Chevrolet Traverse2027 GMC Acadia2027 GMC Terrain2027 GMC Yukon2027 GMC Yukon XL2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista+ 204 moreAssociated Documents - September 15, 2026•Document ID: 11037446Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6426C
- Date Added:
- September 22, 2026
- Manufacturer:
- CADILLAC
SummaryIf 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 (40)2027 Buick Enclave2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2026 Buick Enclave2026 Cadillac Celestiq2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Blazer2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV+ 20 moreAssociated Documents - September 4, 2026•Document ID: 11037253Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP4902W
- Date Added:
- September 10, 2026
- Manufacturer:
- GMC
SummaryThis preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Associated Products (221)2027 Buick Enclave2027 Buick Encore GX2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Equinox2027 Chevrolet Trailblazer2027 Chevrolet Traverse2027 GMC Acadia2027 GMC Terrain2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT5+ 201 moreAssociated Documents - September 2, 2026•Document ID: 11037256Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6544
- Date Added:
- September 10, 2026
- Manufacturer:
- BUICK
SummaryThis 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 (47)2026 Buick Enclave2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Cadillac XT42026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon+ 27 moreAssociated Documents - September 2, 2026•Document ID: 11036718Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6583J
- Date Added:
- September 2, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates how to move U018B from Current to History.
Associated Products (6)Associated Documents - August 20, 2026•Document ID: 11036392Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6551C
- Date Added:
- August 27, 2026
- Manufacturer:
- BUICK
SummaryThis Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
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 moreAssociated Documents - August 13, 2026•Document ID: 11036188Service CampaignUNKNOWN OR OTHER
- Mfr Comm. #:
- N252501791
- Date Added:
- August 13, 2026
- Manufacturer:
- CHEVROLET
SummaryCertain vehicles may experience reduced or intermittent Telematics Control Module functionality. Dealers are to reprogram the Telematic Control Module to the latest software level.
Associated Products (3)Associated Documents - August 3, 2026•Document ID: 11036194Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6512A
- Date Added:
- August 14, 2026
- Manufacturer:
- CADILLAC
SummaryThis 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.
Associated Products (59)2026 Buick Enclave2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Terrain+ 39 moreAssociated Documents - July 24, 2026•Document ID: 11035351Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6446A
- Date Added:
- July 30, 2026
- Manufacturer:
- GMC
SummaryThis PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
Associated Products (50)2026 Cadillac CT42026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac CT42025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Chevrolet Tahoe2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV2025 GMC Yukon2025 GMC Yukon XL+ 30 moreAssociated Documents - July 21, 2026•Document ID: 11035340Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT5099J
- Date Added:
- July 29, 2026
- Manufacturer:
- CHEVROLET
SummaryPI to help diagnose A/C concern
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 moreAssociated Documents - July 14, 2026•Document ID: 11035437Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- 662.20
- 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 (3)Associated Documents - July 13, 2026•Document ID: 11035130Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP6021D
- Date Added:
- July 21, 2026
- Manufacturer:
- CADILLAC
SummaryThis 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.
Associated Products (9)Associated Documents - June 23, 2026•Document ID: 11034769Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT5966F
- Date Added:
- July 7, 2026
- Manufacturer:
- BUICK
SummaryThis 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 (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 moreAssociated Documents - June 18, 2026•Document ID: 11034024Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6552G
- Date Added:
- June 22, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates how to recover the Image Processing Module.
Associated Products (4)Associated Documents - June 18, 2026•Document ID: 11034023Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP6021C
- Date Added:
- June 22, 2026
- Manufacturer:
- CADILLAC
SummaryThis 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.
Associated Products (9)Associated Documents - June 16, 2026•Document ID: 11034038Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- N25-252332
- Date Added:
- June 24, 2026
- Manufacturer:
- CADILLAC
Summary• Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super Cruise.
Associated Products (25)2026 Buick Enclave2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Lyriq2026 Cadillac Optiq2026 Chevrolet Equinox2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2025 Buick Enclave2025 Cadillac Celestiq2025 Cadillac CT42025 Cadillac CT52025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Traverse2025 GMC Acadia2024 Cadillac Lyriq+ 5 moreAssociated Documents - June 5, 2026•Document ID: 11033752Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6426B
- Date Added:
- June 8, 2026
- Manufacturer:
- CADILLAC
SummaryFog lamp control may be missing from radio display after a BCM update. Engineering is investigating.
Associated Products (29)2026 Buick Enclave2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Celestiq2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq+ 9 moreAssociated Documents - May 27, 2026•Document ID: 11033150Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6519
- Date Added:
- June 2, 2026
- Manufacturer:
- CHEVROLET
SummaryThis preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
Associated Products (152)2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Express+ 132 moreAssociated Documents - May 27, 2026•Document ID: 11033006Over The AirFUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER
- Mfr Comm. #:
- 661.40
- Date Added:
- May 29, 2026
- Manufacturer:
- CADILLAC
Summary• Improvements to diagnostics and service messaging for battery health, particularly in humid conditions. • Improvements to transmission diagnostics used for shifting. • Improvements to charging system diagnostics. • Fixes to help protect EV adapter from overheating while charging. • Reduces unnecessary service messages, check engine light activations, and OnStar calls from your vehicle.
Associated Products (4)Associated Documents - May 22, 2026•Document ID: 11032960Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6426A
- Date Added:
- May 28, 2026
- Manufacturer:
- GMC
SummaryIf 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 (29)2026 Buick Enclave2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Celestiq2025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq+ 9 moreAssociated Documents