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My fuel gauge doesnt work on my 2002 grand prix. how do i fix it?

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Usually this problem originates from the sending unit, not the gauge. It's unfortunate because the sending unit is located inside the fuel tank. It's even more unfortunate because the sending unit is integrated into the fuel pump assembly, which costs ~$200. Sometimes the sending unit contacts can be cleaned / sanded, but most often, because the labor is about the same cost as a new fuel pump assembly, people opt to just replace it.

Good luck.

Posted on Mar 20, 2011

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Posted on Jan 02, 2017

  • 216 Answers

SOURCE: I have a 2002 Pontiac

i would say it is your fuel sending unit.common problem with these cars.

Posted on Feb 03, 2011

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Got 2002 grand prix driving just died i replaced fuel filter fuel pump cleaned all sencers still wont sty running what can i do


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I have a 2002 grand prix gt my gas gage goes from full to emty sometimes it goes 3/4 sometimes 1/4 do u no what the problem is


sounds like you need new fuel pump. fuel pump located in gas tank. before you go buy a new fuel pump first push up and down on trunk of car real hard to try to dislodge the little armature inside of tank. this little armature is what sends the signal to the gauge telling you the quantity. push up and down on truck to try to dislodge small signal armature then check your quantity. try this when you are having the problem and i am willing to bet the little armature is stuck. the only way to fix is to buy a new pump.

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1 Answer

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