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:
Reporting Safety Defects to the United States Government
If you believe that your vehicle has a defect which could cause a crash or could
cause injury or death, you should immediately inform the National Highway Traffic
Safety Administration (NHTSA) in ...
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s
systems and components.
See Recommended Fluids and
Lubricants for
GM approved fluids.
- Engine oil and windshield
washer fluid ...
Manual Mode
Driver Shift Control (DSC)
The vehicle has Driver Shift Control (DSC). DSC controls the vehicle's transmission
and vehicle speed while driving down hill or towing a trailer by allowing you to ...