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.
- ...
Entering an Address and Point of Interest, and Storing Preset Destinations
Entering an Address
Enter a destination by inputting the city name first:
1. Press O to turn the system on.
2. A caution may appear. Press OK to proceed.
3. Press DEST.
4. Press2(Address Entry).
...
Brake System Warning Light
With the ignition on, the brake system warning light comes on when the parking
brake is set. If the vehicle is driven with the parking brake engaged, a chime sounds
when the vehicle speed is great ...