Database Coverage Explanations
Coverage area depends upon the map detail available. Some areas have greater map detail than others. The navigation system works only as well as the information provided on the stored map data. See Map Data Updates on how to obtain updated map information.
See also:
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B, and C. Those grades
represent the tire's ability to stop on wet pavement as measured under controlled
conditions on specified governm ...
Navigation
OnStar navigation requires the Directions and Connections service plan.
Push to receive directions or have
them sent to the vehicle navigation screen. Destinations can also be forwarded to
the v ...
Warning Lights, Gauges, and Indicators
Warning lights and gauges can signal that something is wrong before it
becomes serious enough to cause an expensive repair or replacement. Paying
attention to the warning lights and gauges could pre ...