See also:

Anti-theft Alarm System Messages
SERVICE THEFT DETERRENT SYSTEM This message displays when there is a problem with the theft-deterrent system programmed in the key. A fault has been detected in the system which means that t ...

Cooling System
The cooling system allows the engine to maintain the correct working temperature. When it is safe to lift the hood: A. Electric Engine Cooling Fan(s) (Out of View) B. Coolant Surge Tank and ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...