my fuel gage floats from empty to full when the fuel is low or after being parked on an incline
my fuel gagefloats all over reading from empty to full when the fuel is low on 1999 GMC Savana 1500
Your fuel pump/fuel level sending unit MAY be bad! It's on your fuel pump in your gas tank. FYI - always keep at least a 1/4 tank of gas at all time, this unit goes crazy when the tank is always almost empty.