See also:

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 s ...

If Steam Is Coming From Your Engine
CAUTION: 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 ...

Engine Coolant (4.6L Engine)
The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for five years or 150,000 miles (240 000 km), whichever occurs first ...