See also:

If the System Needs Service
If the navigation system needs service and the steps listed here have been followed but there are still problems, see your dealer for assistance. ...

Information Displays
Driver Information Center (DIC) The DIC displays information about the vehicle. It also displays warning messages if a system problem is detected. See Vehicle Messages for more information. All m ...

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 Advi ...