Mine does the same thing...becasue its not hooked up. The PO put an aftermarket tank in the bed so the wiring coming from the gauge in the dash isn't hooked to anything...I have to use the tried and true "put-a-stick-in-the tank" method to see how much gas I've got. Maybe either the wire running from the gauge to the tank or the ground wire to the tank has become disconnected somehow.


Daily Driver 63 C-10 LWB Fleetside