Unable to Connect to OnStar Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Push 
to try the
call again or try again after driving a
few miles into another cellular area.
See also:
Compass
Compass Operation
There is a compass display in the upper right corner of
the mirror.
Compass Calibration
Press and hold to activate the
compass calibration
mode. CAL displays in the compass ...
Tachometer
The tachometer displays the engine speed in revolutions
per minute (rpm). ...
Endless entertainment options
Terraza is offered with a wide choice of passenger entertainment features,
which can be a welcome addition on long trips while giving owners the ability to
interface between the vehicle and one's ...