Map Scales

+ / − (Zoom In/Zoom Out): Press the zoom in or out screen buttons or the scale on the bar to change the level of map detail. The scale appears on the screen once the zoom in or zoom out screen buttons are selected. The system adjusts the map accordingly. The scale of a map can range from 1/32 mi (50 m) to 256 mi (400 km). To change English or metric, see Driver Information Center (DIC)   for more information.

    See also:

    Transferring Service
    Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has ch ...

    Overload
    If the windows are repeatedly operated within a short time, the window operation is disabled for a short time. ...

    Auto Reroute
    When a destination is set but is off the planned route, the system automatically plans a new route and begins to reroute. The new route is highlighted on the screen. ...