How do you change a fuel pump

2004 PONTIAC GRAND AM
82,905 MILES
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ELMOSNOOPY
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A mechanic says, my car needs the fuel pump replaced, The problem started when my car wouldn't start and turn over after work. So I called a tow truck and as the tow truck showed up, an hour later my car decides to start up when I try it one more time. A day later it worked fine in the morning, but died later that day in the middle of an intersection as I was crossing it. How can I be sure the mechanic really changed out the fuel pump in my car and not just a fuse. It cost 700 dollars for the work on the car, and nothing was moved in the trunk of my car. Don't you have to remove the spare tire in the trunk to get to the fuel pump? Thank you, for your help.
Mar 1, 2012 at 3:42 AM
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SATURNTECH9
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Hello,

It sounds like you might have a bad fuel pump. When the car doesn't start see if you have fuel pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here will give you an idea of how to change the pump out.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Check out the diagrams (Below)

Please let us know what you find.

Cheers
Mar 1, 2012 at 3:55 AM
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ELMOSNOOPY
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Yep the fuel pump was bad took me all day and 205.00 of the pump module but the car runs great now. thanks!
Mar 11, 2012 at 3:05 AM
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MGTREMMOR1
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I'm going to replace my fuel pump. I am aware that the pump is in the tank. Is there an access hole or do I need to cut one. If cutting one is the answer, is it better to go in from the trunk or under the back seat? And where do I cut so I can keep the body repairs to a minimum? Thank you for your time, Mike
Mar 4, 2019 at 6:37 PM (Merged)
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MMPRINCE4000
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You have to drop tank to remove fuel pump.

DO NOT CUT ANY HOLES IN BODY TO ACCESS FUEL PUMP FROM ABOVE.

This can cause many problems including the possibility of cutting into the tank and causing a fire/explosion.

Use car repair link in this thread or get a Haynes manual. It will give detailed instructions, read it first, you may deciede you would be better off having it done at a garage.

Make sure it is the fuel pump, check fuses and FP relay first
Mar 4, 2019 at 6:37 PM (Merged)
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LPMANN
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Does the fuel tank have to be removed from the car in order to replace the fuel pump or can this be done through the trunk?
Mar 4, 2019 at 6:37 PM (Merged)
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JDL
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https://www.2carpros.com/forum/automotive_pictures/170934_pontiac_1.jpg

Hello, the database shows, you drop the tank.
Mar 4, 2019 at 6:37 PM (Merged)
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LPMANN
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Great site and great members, thanks for the help.
Mar 4, 2019 at 6:37 PM (Merged)
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R9169Y
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What is an average cost of replaceing a Fuel Pump on the above model car?
Mar 4, 2019 at 6:37 PM (Merged)
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MMPRINCE4000
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Depends on labor, but labor is 2 hours and the part is $450.

So if labor is $75 an hour, you would be looking at $600.

This part is the complete pump assy. including gauge sender.
Mar 4, 2019 at 6:37 PM (Merged)
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COLDSTEEL9MM
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Is there an access hole under the back seat to change the fuel pump or do I have to lower the tank completely?
Mar 4, 2019 at 6:38 PM (Merged)
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ASEMASTER6371
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tank must be dropped to acess pump

Roy
Mar 4, 2019 at 6:38 PM (Merged)
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COLDSTEEL9MM
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Thanks for the great news.
Mar 4, 2019 at 6:38 PM (Merged)
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TIMBELEW12
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Engine Performance problem
2003 Pontiac Grand Am 4 cyl Two Wheel Drive Automatic

my grand am recently just quit running
so i changed the fuel filter which was plugged
now i get no fuel line from the tank but it was pumping fuel before i change the filter is there a cut off switch
or is it possible that the pump went bad as well
Mar 4, 2019 at 6:38 PM (Merged)
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BLUELIGHTNIN6
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there is no inertia switch (shut off switch) . check the fuel pump relay, in the underhood fuse block.
Mar 4, 2019 at 6:38 PM (Merged)
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TIMBELEW12
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thanks for your quick reply
i have checked all fuses and relays relating to the fuel system i just don't want to take it to the shop and pay a arm and leg to find out it was something i can do for half the price
how much pressure should spray out fuel from the line coming from the tank it is disconnected from the filter
should it be high because it was just barely running out
Mar 4, 2019 at 6:38 PM (Merged)
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BLUELIGHTNIN6
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with ignition switch to the RUN position, engine off , the pressure should be 50 - 60 psi but will only last for a couple of seconds without using a scan tool to enable the fuel pump relay.
Mar 4, 2019 at 6:38 PM (Merged)
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TIMBELEW12
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ok then i must be the pump because it did come out with a full stream but maybe no more than 10-15 psi maybe but after a couple of times then nothing came out from the fuel line from the tank and the pump made no noise does this sound like a fuel pump problem
thanks in advance you have been very helpful
Mar 4, 2019 at 6:38 PM (Merged)
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DENISEKAV
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How much to replace a fuel pump on a 2005 Pontiac Grand Am SE, 6 cyl.? Parts and Labor.

Thanks!
Mar 4, 2019 at 6:38 PM (Merged)
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BLACKOP555
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need to know oem part or after market

and shop or dealership.
Mar 4, 2019 at 6:38 PM (Merged)
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DENISEKAV
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Well, we got a bill from our trusted mechanic for $830. he has never ripped us off. Not a dealer, but an independent shop. Not sure if the part oem, but he said the part was $500 and labor and tax about $330. Thanks!
Mar 4, 2019 at 6:38 PM (Merged)
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BLACKOP555
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1.8 hours for replacement of pump. .2 hours for drain and refil so 2 hours of work. another .7 hours for a cleaning of the tank if he did that. pump is 432 dollars for a pump thats without the markup. so so yeah.

id do 460 for pump maybe up to 500 for pump and labor is 2 hours at 100 an hour which is usual going rate is 200.

700 without tax.
Mar 4, 2019 at 6:38 PM (Merged)