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:

    How to Check Lubricant
    To get an accurate reading, the vehicle should be on a level surface. For Two-Wheel-Drive vehicles, the proper level is from 15mm to 40mm (0.6 in to 1.6 in) below the bottom of the filler plu ...

    Safety Locks
    Rear door safety locks prevent passengers from opening the rear doors from the inside. Press to activate the safety locks, the LED in the switch illuminates. Press to deactivate the safety ...

    SERVICE BATTERY CHARGING SYSTEM
    This message displays when there is a problem with the generator and battery charging systems. Driving with this problem could drain the battery. Turn off all unnecessary accessories. Stop a ...