Service bulletins for the 2021 Cadillac CT4
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.
813 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Seat belts are shown. Show all
| 99-09-40-005I | 2023-07-28. Service bulletin. SEAT BELTS. This service bulletin provides information on availability for a seat belt extender. |
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| 22NA031 | 2022-07-18. Service bulletin. SEAT BELTS; AIR BAGS; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. Child Safety Lock with Update Unsuccessful Message on Infotainment Screen. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.