The gas gauge on my '94 G Prix is erratic. One time it will show 3/4 full
> and minutes later 1/4 full, then 1/2 full..etc....Where should I look - What
> needs replacing...It it's an expensive job I'll just keep topping it up now
> and then.
>
> KP
>
My 93 does the same thing. And my dad's 92 Lumina used to do the same thing too. I think it's just something that they pretty much all did (not sure about the new W-Bodies).