See also:

Auxiliary Devices
The navigation system has an auxiliary input jack located on the faceplate and in the center console. This is not an audio output; do not plug the headphone set into the front auxiliary input jack ...

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 ...

If Steam Is Coming from the Engine Compartment
WARNING Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it off and get everyone awa ...