Recently my 2005 Durango has had some issues with the digital reading for the gas gauge. I can drive 5 miles and the gauge itself will drop 1/4 Of a tank and I'll lose like 50 miles on the overhead digital readout. What could be causing this? I have replaced the fuel pump, radiator and had a recent oil change with new air & oil filters. I went to fill it up today and gas shot out due to it being full already but only reading that it had 4 miles on it and the gauge was below empty. Please help!