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:
Initial Drive Information
This section provides a brief
overview about some of the
important features that may or may
not be on your specific vehicle.
For more detailed information, refer
to each of the features which ...
Radio (s)
Press to turn the system on and off. Turn to increase or decrease the volume.
RADIO/BAND: Press to choose between FM, AM, or XM™, if equipped.
Turn to select radio stations.
Press to seek the p ...
Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm).
Notice: If the engine is operated with the tachometer in the shaded warning area, the vehicle could be damaged, and the damag ...