See also:

Making a Call
To make a call: 1. Press 5 once or twice (depending on the radio). 2. Enter the phone number. 3. Select Call to start dialing the number. ...

What to Use
WARNING Adding only plain water or some other liquid to the cooling system can be dangerous. Plain water and other liquids, can boil before the proper coolant mixture will. The coolant warning sy ...

Retrieve My Number
1. Push . System responds: “OnStar ready.” 2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.” ...