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:
What Will You See After an Airbag Inflates?
After a frontal airbag inflates, it quickly deflates,
so quickly that some people may not even realize
an airbag inflated. Roof-mounted rollover
airbags may still be at least partially inflated
mi ...
Fuses and Circuit Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
...
Reducing Speed While UsingCruise Control
Press in the set button at the end of the lever until
you reach the desired speed, then release it.
Each time you do this, you will go about
1 mph (1.6 km/h) slower. ...