Cadillac Optiq Service Bulletins (2026)
131 manufacturer communications on file.
- February 20, 2026•Document ID: 11028942Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6456D
- Date Added:
- February 23, 2026
- Manufacturer:
- CADILLAC
SummaryThis preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
Associated Products (68)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 Cadillac XT42026 Chevrolet Colorado2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Canyon2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV+ 48 moreAssociated Documents - February 17, 2026•Document ID: 11028937Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6394C
- Date Added:
- February 23, 2026
- Manufacturer:
- GMC
SummaryA vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.
Associated Products (41)2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Buick Envision2025 Cadillac Celestiq2025 Cadillac CT5+ 21 moreAssociated Documents - February 3, 2026•Document ID: 11028697Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6456C
- Date Added:
- February 10, 2026
- Manufacturer:
- CHEVROLET
SummaryThis preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
Associated Products (42)2026 Buick Enclave2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Corvette2025 Chevrolet Equinox+ 22 moreAssociated Documents - January 29, 2026•Document ID: 11027944Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6638A
- Date Added:
- February 1, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed limit sign displayed on instrument cluster.
Associated Products (23)2026 Cadillac Celestiq2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2025 Cadillac Celestiq2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Optiq2025 Chevrolet Traverse2025 GMC Acadia2025 GMC Hummer EV Pickup2025 GMC Hummer EV SUV+ 3 moreAssociated Documents - January 29, 2026•Document ID: 11027925Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6456B
- Date Added:
- February 1, 2026
- Manufacturer:
- CADILLAC
SummaryThis preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
Associated Products (40)2026 Buick Enclave2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Tahoe+ 20 moreAssociated Documents - January 28, 2026•Document ID: 11027946Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6638
- Date Added:
- February 1, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed limit sign displayed on instrument cluster.
Associated Products (12)Associated Documents - January 28, 2026•Document ID: 11027938Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP6099A
- Date Added:
- February 1, 2026
- Manufacturer:
- CADILLAC
SummaryThis P/I is advising that the TCM should not be replaced for DTC P16F4 and to follow the repair instructions.
Associated Products (16)2026 Buick Enclave2026 Buick Envision2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Acadia2026 GMC Terrain2026 GMC Yukon2026 GMC Yukon XLAssociated Documents - January 28, 2026•Document ID: 11027936Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6478
- Date Added:
- February 1, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the field about a normal condition about a message that appears when using a NFC card to start the vehicle when a key fob or a digital key device is not present.
Associated Products (11)Associated Documents - January 23, 2026•Document ID: 11027884Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6628D
- Date Added:
- January 30, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the repair direction needed to correct the foam seal when visible from inside or outside of the vehicle.
Associated Products (2)Associated Documents - January 20, 2026•Document ID: 11027888Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP6099
- Date Added:
- January 30, 2026
- Manufacturer:
- GMC
SummaryThis P/I is advising that the TCM should not be replaced for DTC P16F4 and to request FSE assistance for a TCM data pull.
Associated Products (14)Associated Documents - January 20, 2026•Document ID: 11027877Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6456A
- Date Added:
- January 30, 2026
- Manufacturer:
- CHEVROLET
SummaryThis preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
Associated Products (37)2026 Buick Enclave2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Equinox2026 Chevrolet Tahoe2026 Chevrolet Traverse2026 GMC Yukon2026 GMC Yukon XL2025 Buick Enclave2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Corvette2025 Chevrolet Equinox2025 Chevrolet Tahoe2025 Chevrolet Traverse+ 17 moreAssociated Documents - January 16, 2026•Document ID: 11027917Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- 654.20
- Date Added:
- February 1, 2026
- Manufacturer:
- CADILLAC
Summary• Improvements to help protect battery health in low temperatures. • Improvements to diagnostics to reduce service messages. • Fixes to help protect battery health in high temperatures. • Fixes to improve responsiveness for vehicle diagnostics.
Associated Products (2)Associated Documents - January 16, 2026•Document ID: 11027697Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6425C
- Date Added:
- January 19, 2026
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
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 - January 14, 2026•Document ID: 11027701Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP6098
- Date Added:
- January 19, 2026
- Manufacturer:
- CHEVROLET
SummaryThis PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
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 - January 12, 2026•Document ID: 11027686Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6457B
- Date Added:
- January 19, 2026
- Manufacturer:
- CHEVROLET
SummaryThis 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.
Associated Products (136)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+ 116 moreAssociated Documents - January 8, 2026•Document ID: 11027601Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIP4902U
- Date Added:
- January 13, 2026
- Manufacturer:
- GMC
SummaryThis preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
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 - December 31, 2025•Document ID: 11026923Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6540F
- Date Added:
- January 4, 2026
- Manufacturer:
- CHEVROLET
SummaryThis Preliminary information communicates to dealers a procedure to reset the radio.
Associated Products (136)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+ 116 moreAssociated Documents - December 19, 2025•Document ID: 11026855Over The AirUNKNOWN OR OTHER
- Mfr Comm. #:
- 654.10
- Date Added:
- December 25, 2025
- Manufacturer:
- CADILLAC
Summary•This update will allow you to enable digital key with the myCadillac mobile app. •Digital key is a new feature that lets you lock, unlock, and start your vehicle using your smartphone or smartwatch. This feature allows for convenient vehicle access without a key fob. •For more information, refer to the Cadillac support site. •Digital key requires a compatible device and active OnStar service plan. See onstar.com for details and limitations. •Fixes for active cabin ventilation. •Fixes to help ensure your vehicle can recognize the key when using digital key. •Improvements to the performance of vehicle software updates. 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)Associated Documents - December 19, 2025•Document ID: 11026727Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIT6445B
- Date Added:
- December 22, 2025
- Manufacturer:
- CADILLAC
SummaryThis PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and Brake after an Ignition Cycle due to an Engineering change.
Associated Products (20)2026 Buick Enclave2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 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 Terrain2026 GMC Yukon2026 GMC Yukon XLAssociated Documents - December 16, 2025•Document ID: 11026718Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- PIC6633
- Date Added:
- December 22, 2025
- Manufacturer:
- CADILLAC
SummaryThis Preliminary information communicates to the technician the repair direction needed to address a window performance issue or noise complaint.
Associated Products (2)Associated Documents