My fuel Gage has stopped working....it just keeps reading full but it's not could it be a fuse or something worse? Please help I have a kids and I don't wanna get stuck somewhere with her cause of it

Asked by Feb 28, 2015 at 09:46 PM about the 1999 Pontiac Grand Prix 4 Dr GT Sedan

Question type: Maintenance & Repair

5 Answers

7,720

The fuel sending unit may have failed ... It should be an easy fix for anyone handy because the unit is accessible from the trunk ... you don't have to drop the fuel tank like in the Good Ol' Days Good luck

3 out of 3 people think this is helpful.
4,325

It is probably either the guage itself or the sending unit in the tank. Unitl you fix it, try using your odometer to judge the fuel level (if you know how many miles per gallon you typically get) and don't take it down below a quarter tank. Sending unit will require removing the tank so be prepared to spend a few hundred at a shop. The gauge is not a job most shops want to tackle so you would likely wind up at a dealer (and also spend a few hundred). Before doing either of these, check the fuse that controls your guages to make sure it is OK.

2 out of 2 people think this is helpful.
7,720

Most Grand Prix less than 20 years old have an access panel on the right side of the trunk (under the carpet)

6 out of 6 people think this is helpful.
61,075

If the sending unit checks out ok then it's a bad hot wire to the gauge. A fuel gauge that always reads full is a bad hot wire. If it always reads empty it's a bad ground. HTH. -Jim

3 out of 3 people think this is helpful.
7,720

You may be in the right Church, but the wrong pew ... the gauge should read to ground not hot. The sensing must be done through an "intrinsically safe" circuit because the presence of a spark would make a bad day ... a really bad day

4 out of 4 people think this is helpful.

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