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:
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips for
driving in these conditions include:
- Keep the vehicle serviced and in
good shape.
...
Trip/Fuel Menu Items
(Trip/Fuel): Press to scroll through
the following menu items:
Odometer
Press the trip/fuel button until ODOMETER displays. This display shows the distance
the vehicle has been driven in either ...
Compass
The vehicle may have a compass in
the Driver Information Center (DIC). ...