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. ...

OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. T ...

The Elephant
GMC has long combined ruggedness and elegance to good effect — consider the Sierra pickup and Acadia crossover, for example. But the Terrain is one odd duck. GM says it shares just a few body pa ...