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:
Resuming a Set Speed
Suppose you set your cruise control at a desired
speed and then you apply the brake. This, of
course, shuts off the cruise control. But you do not
need to reset it.
Once you are going about 25 m ...
ENGINE OIL LOW — ADD OIL
This message displays when the
engine oil level is too low. Check the
oil level. See Engine Oil. ...
Satellite Radio Antenna
The XM Satellite Radio antenna is located on the roof of the vehicle. Keep the
antenna clear of obstructions for clear radio reception.
If the vehicle has a sunroof, the performance of the XM syste ...