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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

Bulletins, newest first
PIC6628C2025-11-17. 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.
PIC6629A2025-11-17. 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
PIC6537E2025-11-17. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that Engineering is working on a resolution.
PIC66292025-11-17. 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
PIC6628B2025-11-10. 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.
PIC6628A2025-11-10. 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.
PIC6485E2025-11-10. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that the upper compressor mount could be twisted causing a vibration or noise concern while the compressor is running.
PIP6021B2025-11-03. 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.
PIT6445A2025-11-03. Service bulletin. UNKNOWN OR OTHER. This 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.
PIC66282025-11-02. 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.
PIT6425B2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
PIT6425A2025-10-24. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
PIT64402025-10-24. Service bulletin. UNKNOWN OR OTHER. The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
18-NA-1802025-10-16. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIT6411B2025-10-06. Service bulletin. UNKNOWN OR OTHER. This information provides software update information for the K73 Telematics module to correct the symptoms described.
PIC6607B2025-10-06. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history - U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
18-NA-1802025-09-26. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIT64312025-09-16. Service bulletin. UNKNOWN OR OTHER. This preliminarily information communication an issue with the supercruise dropping out when next to a merging lane and engineering is investigating.
135982025-09-10. Other. UNKNOWN OR OTHER. New Vehicle Monitoring Programs Section in IVH
25-NA-1182025-09-10. Service bulletin. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. 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.
PIT6236B2025-08-26. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates the active safety features and/or cameras are inoperative or unavailable after a 12 volt battery replacement or battery charge after a low voltage condition.
PIT6368B2025-08-22. 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.
PIP4902T2025-08-22. Service bulletin. UNKNOWN OR OTHER. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIT6059C2025-08-22. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera and dealers to replace the camera.
PIC5650M2025-08-12. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.

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