On certain vehicles, the check valve inside the fuel filler pipe may fall into the tank during refueling. This condition could cause fuel to spill out of the fuel filler pipe when the tank is being filled and refueling is stopped by the auto-stop system of the refuel gun. This may result in a fire if in the presence of an ignition source. Correction: Dealer will inspect the check valve. If the valve cannot be engaged or has fallen into the tank, the fuel tank will be replaced.