See also:

Anti-theft Alarm System
This vehicle has an anti-theft alarm system. ...

How OnStar® Service Works
In order to provide you with OnStar® services, your vehicle’s OnStar® system has the capability of recording and transmitting vehicle information. This information is automatically sent to an ...

Disarming the System
To disarm the system, do one of the following: Press on the RKE transmitter. Approach the vehicle with the RKE transmitter (keyless access). Start the engine. The alarm automatically disar ...