Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
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 ...
Horn
Press near or on the horn symbols on your
steering wheel pad to sound the horn. ...
Loss of Control
Let us review what driving experts say about what
happens when the three control systems —brakes,
steering, and acceleration — do not have enough friction
where the tires meet the road to do ...