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Service bulletins for the 2026 Cadillac Optiq

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

142 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with type: Service bulletin are shown. Show all

Bulletins, newest first
PIC66662026-10-14. Service bulletin. UNKNOWN OR OTHER. This PI states an issue may exist with the liftgate spoiler contacting the body creating a noise.
PIT6457C2026-10-05. Service bulletin. UNKNOWN OR OTHER. This 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.
PIC6540K2026-10-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealers a procedure to reset the radio.
PIT6368E2026-10-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
PIT5698F2026-09-30. Service bulletin. UNKNOWN OR OTHER. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
PIC6645A2026-09-22. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information provides a repair direction for an inoperative amplifier module due to water intrusion.
PIT6426C2026-09-22. Service bulletin. UNKNOWN OR OTHER. If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.
PIC6629F2026-09-16. Service bulletin. UNKNOWN OR OTHER. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
PIP4902W2026-09-10. Service bulletin. UNKNOWN OR OTHER. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIT65412026-09-02. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication
PIC6656A2026-08-27. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician the direction needed when encounter a noise complaint for the rear disc brakes.
PIC66612026-08-27. Service bulletin. UNKNOWN OR OTHER. This 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.
PIC6551C2026-08-27. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
PIC66582026-08-14. Service bulletin. UNKNOWN OR OTHER. This 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.
PIT6368D2026-08-14. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
PIT6512A2026-08-14. Service bulletin. UNKNOWN OR OTHER. This 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.
PIT6517C2026-08-05. Service bulletin. UNKNOWN OR OTHER. This 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.
PIC66562026-07-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician the direction needed when encounter a noise complaint for the rear disc brakes.
PIT5099J2026-07-29. Service bulletin. UNKNOWN OR OTHER. PI to help diagnose A/C concern
PIP6021D2026-07-21. Service bulletin. UNKNOWN OR OTHER. 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.
PIC66552026-07-21. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician the direction needed when encountering an issue with pinch point protection is inoperative on the front windows.
PIC6628E2026-07-13. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when visible from inside or outside of the vehicle.
PIT5966F2026-07-07. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
PIP6021C2026-06-22. Service bulletin. UNKNOWN OR OTHER. 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.
PIP6103C2026-06-18. Service bulletin. UNKNOWN OR OTHER. This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.