[Z06vette]

I too figured it was a ground problem. However, after multiple tests, switching grounds around, trying another guage, etc... I finally ran a strand of wire from the neg bat terminal to the tank-- still same thing. I fill up and gauge still reads 1/4 tank. 2 days later it goes to 3/4 or maybe even full. 100 miles later its still on 3/4. I have gotten so used to using the trip meter that I harly even look at the gauge. After running out of gas in Tennesee on the powertour I don't know I'll ever trust it again. I even took the sending unit out of the tank & hooked it up- works the gauge prefectly when i move the float by hand. I think the issure is by having all the baffling in the tank, the float arm can only be so long or it his the baffling. The short float arm does not seem to work as well as the longet ones found in most production tanks. At least thats what conclusion I have come to on my own. I am no expert or rocket scientist... if you have any other ideas I'm open to them. Or maybe I just ended up with 2 bad sending units.