Potential Issues

Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five days, OnStar can contact Roadside Assistance and a locksmith to help gain access to the vehicle.

    See also:

    Engine Cooling System Messages
    ENGINE HOT A/C (AIR CONDITIONING) OFF This message displays when the engine coolant becomes hotter than the normal operating temperature. See Engine Coolant Temperature Gauge. To avoid add ...

    Tire Sealant and Compressor Kit
    WARNING! Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhaust may enter the vehicle. Engine exhaust contains carbon monoxide (CO) which cannot be seen or ...

    Power Door Locks
    Press or on the Remote Keyless Entry (RKE) transmitter. See Remote Keyless Entry (RKE) System Operation  . Premium Trim Shown, Up-Level Similar (Lock): Press to lock the doors. (Unloc ...