See also:

Error Messages
If Disc Read Error displays and/or the disc comes out, it could be for one of the following reasons: The disc has an invalid or unknown format. The disc is not from a correct region. The dis ...

Speedometer
The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph). ...

Other Navigation Services Available from OnStar
OnStar eNav: Allows subscribers to send destinations from Google Maps™ and MapQuest.com to their Turn-by-Turn Navigation or screen-based navigation system. When ready, the directions will b ...