Thread: 2000 Grand Prix GT Fuel Gauge

I am Having Problems with my fuel gauge in my 2000 Grand Prix GT, i pulled the pump out and checked it with a Ohm Meter and when i move the float up and down the Ohm meter goes up and down and its working properly and when i start it the gauge shoots to Full and about 30 seconds pass and it drops down to E and the low fuel light comes on. I bought the car wrecked and the guy said it was like that for a real long time before i got it. i have been going by the fuel used on the digital read out on the dash. any ideas??

Same thing on my gtp. Tested everything I could, but had to buy a new one. I still think its the whole assembley, runs like 200 or so. I just delt with it until I found a used on for $60.

Really, I did not know that you could buy it seperat.


Is that only one the gt's?

ok guys i have a 99 parts car and the gauge worked in it for sure, i will swap them out and let you know Thank you guys

nope thats not it i tried the pump from my parts car and still does the same thing and just to be sure it dident go bad sitting i pulled the plate off in the trunk of my wifes 99 GT and plugged her wires in to the parts car pump and the pump from the parts car works just fine i moved the arm up and down and the gauge worked just fine so im still stumped..

Yea its the float, its also a common problem on the gm trucks those years as well as other w body vehicles, just be lucky it didnt happen on a truck cause doing it yourself on a truck sucks and having it done by somone is even worse cause it costs a pretty penny i had it happen to me on an 2001 silverado a few years back. I havent had the time yet to fix my gp though i do have the part, but you'll be happy to know that the fuel used gauge is correct within about 2 tenths of a gallon so you can use that until you get a new one. Just remember you have a 17.5 gallon tank and do the math.