Cadillac Optiq Service Bulletins (2027)
14 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 25, 2026•Document ID: 11037554Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6665
- Date Added:
- September 29, 2026
- Manufacturer:
- CADILLAC
SummaryThis PI communicates a condition may exist where the paint is peeling near the headlamp on the front fascia.
Associated Products (1)Associated Documents - September 15, 2026•Document ID: 11037447Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6645A
- Date Added:
- September 22, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary Information provides a repair direction for an inoperative amplifier module due to water intrusion.
Associated Products (3)Associated 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 - August 27, 2026•Document ID: 11036690Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6541
- Date Added:
- September 2, 2026
- Manufacturer:
- CHEVROLET
SummaryThis 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 (113)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+ 93 moreAssociated Documents - August 20, 2026•Document ID: 11036393Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6661
- Date Added:
- August 27, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician a diagnostic tip when they encounter a condition that involves the tail lights staying on after the vehicle has been turned off.
Associated Products (3)Associated Documents - August 18, 2026•Document ID: 11036395Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6534
- Date Added:
- August 27, 2026
- Manufacturer:
- GMC
SummaryOnstar connectivity features may be inoperative. Dealer is instructed how to reset the onstar module. Engineering is investigating a solution.
Associated Products (8)Associated Documents - August 18, 2026•Document ID: 11036394Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6656A
- Date Added:
- August 27, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the direction needed when encounter a noise complaint for the rear disc brakes.
Associated Products (3)Associated Documents - August 13, 2026•Document ID: 11036485Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- 662.10
- Date Added:
- August 31, 2026
- Manufacturer:
- CADILLAC
Summary• Minor infotainment system improvements
Associated Products (1)Associated Documents - August 4, 2026•Document ID: 11036197Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6658
- Date Added:
- August 14, 2026
- Manufacturer:
- CADILLAC
SummaryThis 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)Associated Documents - July 30, 2026•Document ID: 11035710Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6517C
- Date Added:
- August 5, 2026
- Manufacturer:
- CADILLAC
SummaryThis PI advise dealers If U3000 is present, follow the correct service doc by Symptom Byte before contacting PQC; if not present, verify the camera is clean, then contact PQC if no issue is found.
Associated Products (29)2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Equinox2027 GMC Terrain2026 Buick Enclave2026 Cadillac Celestiq2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV+ 9 moreAssociated Documents - July 24, 2026•Document ID: 11035355Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6656
- Date Added:
- July 30, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the direction needed when encounter a noise complaint for the rear disc brakes.
Associated Products (3)Associated Documents - July 13, 2026•Document ID: 11035123Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6655
- Date Added:
- July 21, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the direction needed when encountering an issue with pinch point protection is inoperative on the front windows.
Associated Products (3)Associated Documents