See also:

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 ...

Starting Procedure (Key Access)
1. With your foot off the accelerator pedal, turn the ignition key to START. When the engine starts, let go of the ignition. The idle speed will go down as your engine gets warm. Do not rac ...

Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push to try the call again or try again after driving a few miles into ...