See also:

Global Positioning System (GPS)
○ Obstruction of the GPS can occur in a large city with tall buildings; in parking garages; around airports; in tunnels, underpasses, or parking garages; or in an area with very dense trees. ...

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 vehic ...

Drunk Driving
Death and injury associated with drinking and driving is a global tragedy. WARNING Drinking and then driving is very dangerous. Your reflexes, perceptions, attentiveness, and judgment can be affecte ...