I recently aquired a 1988 GMC Sierra 4x4 and had a problem with the fuel gauge, i was working perfectly when i got the truck then 2 days ago it took a shit, i thought i was almost on E and went to fill up. Paid $29 in gas, which i new wasn't right for a fill-up, and it only put it a little over a quarter of a tank. So i know the guage isn't accurate and just tring to figure out what i should do first to try and fix it.