I just bought a 2000 GMC Sierra 1500 pick up and the gas gauge goes nuts?

The gas Gage goes from full to empty, Is there an easy fix for this?

Anonymous2009-01-01T21:52:29Z

Favorite Answer

Ground wire exterior under the car in front on the fuel tank.

NA SVT2009-01-01T22:05:02Z

like the first guy said. Common in the 99-05 GM truck sending units. Problem is that you have to drop the tank to replace the unit.

I had a 99 Silverado that I drove for 2.5 years like that. Just pay attention to the miles per fillup. It will definitely go at least 300 miles in between fill ups

Anonymous2009-01-01T21:51:53Z

your sending unit is bad. unfortunately, a common problem on lots of GM trucks.

?2009-01-01T22:07:39Z

check for lose wires.