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:
Fuel Additives
To provide cleaner air, all gasolines in the United States are now required
to contain additives that help prevent engine and fuel system deposits from
forming, allowing the emission control system ...
Steering Wheel Controls
Some audio steering wheel
controls could differ depending on
the vehicle's options. Controls that
can be adjusted at the steering
wheel may include:
SRCE (Source): Press to
switch between ...
Security
OnStar provides services like Stolen Vehicle Assistance, Remote Ignition
Block, and Roadside Assistance, if the vehicle is equipped with these services.
OnStar can unlock the vehicle doors remotely, ...