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 Control Buttons
The following control buttons are located on the navigation system:
(Power/Volume):
1. Press to turn the system on and off.
2. Turn to increase or decrease the volume to the audio system.
3. Pres ...
Theft-Deterrent Feature
TheftLock® is designed to discourage theft of the vehicle's radio by learning
a portion of the Vehicle Identification Number (VIN). The radio does not operate
if it is stolen or moved to a dif ...
SERVICE BRAKE ASSIST
This message displays if there is a
problem with the brake system.
The brake system warning light and
the antilock brake system (ABS)
warning light may also display on
the instrument panel cl ...