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:
Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
1.1. Start the engine.
1.2. Shift into a gear.
1.3. Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clea ...
High-Beam Headlamp/ Low-Beam Headlamp
1. Open the hood. See Hood .
2. For the driver side bulb, remove the windshield washer bottle filler neck
by firmly pulling it straight up and out of the bottle.
3. Remove the battery cover by pul ...
Horn
Press on the steering wheel
pad to sound the horn. ...