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 call again or try again after driving a to try the call again or try again after driving a few miles into another cellular area.

    See also:

    Brake Assist (Except CTS-V)
    This vehicle has a brake assist feature designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature uses the stability system hydrauli ...

    Maintenance
    Passenger Compartment Air Filter The passenger compartment air filter traps most of the dust and pollen from the air entering the vehicle. The filter will need to be changed periodically. S ...

    Electric Parking Brake Light
    For vehicles with the Electric Parking Brake (EPB), this light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. The parking b ...