OnStar Overview

If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. The OnStar system sta ...

Emergency

With Automatic Crash Response, the built-in system can automatically connect to help in a crash even if you cannot ask for it. Push to connect to an Emergency Advisor. GPS technology is used to id ...

See also:

Maps
This section includes basic information that you need to know about the map database. The maps are stored on a compact flash drive that is built into the navigation system. ...

If your vehicle overheats
CAUTION ► Do not continue to drive if your vehicle overheats. Doing so could cause engine damage or a vehicle fire. ► To avoid the danger of being scalded, never remove the rad ...

Hill descent
With Hill Descent Control (HDC) selected in either automatic, Sport or CommandShift modes, a low gear will be selected and maintained to provide maximum engine braking. Should the gear lever be mo ...