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:
Steering Wheel Controls
Steering Wheel Controls
For vehicles with audio steering
wheel controls, some audio controls
can be adjusted at the steering
wheel.
: Press to interact with the
available Bluetooth, OnSta ...
Programmable Automatic Door
Locks
Your vehicle is programmed so that, when the doors are
closed, the ignition is on, and the shift lever is moved out
of P (Park), all the doors will lock. The doors will unlock
every time you sto ...
Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle
fluid unless you suspect there is a leak or you hear
an unusual noise. A fluid loss could indicate a
problem. Have it inspe ...