See also:

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...

Rear Seat Audio (RSA) System
Vehicles with this feature allow the rear seat passengers to listen to and control any of the music sources: radio, CD, DVD, or other auxiliary sources. The rear seat passengers can control the sa ...

If No Steam Is Coming from the Engine Compartment
The ENGINE OVERHEATED STOP ENGINE or the ENGINE OVERHEATED IDLE ENGINE message, along with a low coolant condition, can indicate a serious problem. If there is an engine overheat warning, but see o ...