Question about 1997 Pontiac Grand Prix

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Haunted gas gauge? 1997 pontiac grand prix se with 3.8 L engine. gas gauge is haunted? sometimes shows full when I know theres under 15 L in the tank, it will show any amount of gas in the tank but rarely the correct amount any idea?

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The fuel guage sender on this model is faulty. Some were recalled when new. You need to replace it with a new one. It's attached to the fuel pump just outside the tank. It's a good idea to replace the pump while you are at it since you have to drop the tank to do this. The sender is part of a wire harness that comes with the OEM pump assembly. I strongly urge you to use the AC Delco OEM part for this repair. There are much cheaper after market pumps out there but they come with many complaints of Hard Starting and poor performance.

Posted on Jul 16, 2010

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Bad ground from your fuel gauge sender. Find a good ground on your sender and I would bet it will work properly...

Posted on Sep 12, 2009

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1 Answer

Do I have to remove the gas tank to inspect/change the fuel pump on a 1991 pontiac grand prix?


Unfortunately, yes. It's a pain. I own a 1991 Pontiac grand prix SE 3.1L.

My fuel pump problem started when I ran out of gas (gas gauge was offset) Of course it shuts off w/o gas but it will more likely kill your fuel pump and clog the $#!t out of your filter.

If it makes a buzzing sound under the vehicle w/o the engine running, near the trunk area, replace it along with the filter.

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My 2002 grand prix gt gas gauge doesnt always read properly, when i fill it up reads right, but always says full rare times while driving it will read correct, and after driving i put in park, and let idle...


replace the gas tank unit. 99 percent of the problems of this type require the tank unit to be replaced. it is a flaw with the GM cars, that GM refuses to have a recall on.

Sep 01, 2011 | 2002 Pontiac Grand Prix

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Hey guys, i am no mechanic not even close, but my pontiac grand prix se 4-dr automatic with 6cyl, has been acting strange when i first start it and drive it maybe 30 min the low coolent light comes on and...


The first things to do are: 1. Make sure the radiator is full when the engine is cool (check the fluid in the radiator as well as the overflow tank). 2. Make sure the thermostat is working. 3. Have the lower intake manifold gasket checked. The Grand Prix SE came with a 3.1L engine (standard) and these engines are famous for lower intake manifold gasket problems.

Nov 18, 2010 | 1999 Pontiac Grand Prix

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I need to know how to reset a gas gauge on 1997 pontiac grand am se


If gas guage is pegged either full or empty, it is most likely a broken wire to sending unit on the top of the tank. If guage reads wrong, like too much or too little is either bad sending unit in tank or bad guage in dash.

Jun 24, 2010 | Cars & Trucks

1 Answer

Grand prix gas gauge not working


should be a grey wire going to the top of fuel tank connects to fuel guage / when the guage in the tank reads grounded it shows full , no ground it shows empty. if you ground that grey wire and the guage jumps to full then faulty guage if nothing maybe bad ground on the tank itself. the guages are a reostat like a tyco race car gun the more it moves the more it grounds .. good luck

Nov 19, 2009 | 2000 Pontiac Grand Prix

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1997 Pontiac Grand Prixn feul gauge is backwards


Hello - you will need to replace your sending unit - which is attached to the fuel pump in the gas tank.



Thanks for using FixYa!

Oct 28, 2009 | 1997 Pontiac Grand Prix

3 Answers

1999 Pontiac Grand AM 4DR. SE fuel gauge and other problems(help)


I have a 97 and an 00 Grand Prix and an 03 Pontiac Montana. The fuel gauge in all three vehicles don't work. The dealer here says it's a common problem in Colorado where I live. The government required additives in the gas cause corrosion problems with the fuel level sensor float linkage that sends the signal to the fuel gauge. The repair requires the removal of your fuel tank and replacement of the linkage and sensor. It would cost somewhere around $500. I've leared to reset my trip meter with every fill-up and watch the miles and check the fuel mileage with every fill-up to make sure I know when I'm about to run out.

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Engine stalling out while driving


It could be that your fuel injection system is failing, try putting some fuel injection cleaner (gas additive) into your gas tank, you should notice a difference after the first full tank. If not it will be time to get your system checked-out at a garage.

May 18, 2009 | 1997 Pontiac Grand Prix

1 Answer

Once the fuel gage on my 1997 Grand Prix get below 1/2 a tank, the gauge will raise to show nearly 3/4 of a tank of gas. Is this a problem with electronics or the sending unit???


Either the sending unit on the tank, or there is a short in the wire going to it.. check it for a worn spot in the wire from the fuel tank that is usually the problem .

May 01, 2009 | 1997 Pontiac Grand Prix

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