Thread: Fuel sending unit on a 2001 grand prix.

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  1. #1 Fuel sending unit on a 2001 grand prix. 
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    I would like some info on how to replace the unit. My gauge does not give me a true reading of how much gas I have. It is very annoying not knowing how much gas I have in the tank. I have learned alot from this forum. I hope someone can give me some instructions on how to do it. Thanks in advance.
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  2. #2 Re: Fuel sending unit on a 2001 grand prix. 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Youtube "bonneville fuel level sensor replacement".

    Its a 3 part video on how its done, you will pretty much be doing the exact same thing on your GP as he does on his bonneville.


    That part is only like 20-30 bucks.

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  3. #3 Re: Fuel sending unit on a 2001 grand prix. 
    I Write E85 Stickies Frosty's Avatar
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    I have a gallery of pics from when I did my fuel pump upgrade / level sensor change..... Basic idea is remove the access cover under the carpet in the trunk. Pop the three lines off.... should come off by hand without tools. Remove the two electrical plugs. Then theres a big metal ring that you use a hammer to beat / turn left to unlatch it. remove the ring and then the entire sender lifts out. I suggest doing it with the tank mostly empty. Then its as simple as unclip the old sensor and clip in the new one.

    I suggest not using a worklight or anything electrical near the fuel hole for obvious reasons.
    "Lets just throw more boost at it and see what happens" -Frosty
    The Defacto Guide to tuning your car for E85. Read it and learn.



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  4. #4 Re: Fuel sending unit on a 2001 grand prix. 
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    Youtube "bonneville fuel level sensor replacement".

    Its a 3 part video on how its done, you will pretty much be doing the exact same thing on your GP as he does on his bonneville.


    That part is only like 20-30 bucks.
    Can you just replace the whole sending unit ? Instead of tapping out the moving piece. Do you have to splice in the wires if you replace the whole unit.
    Polarity doesn't matter right ?
    1997 Red GTP 182000 miles stock
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  5. #5 Re: Fuel sending unit on a 2001 grand prix. 
    Killa Bee Scottydoggs's Avatar
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    if you change the whole gas pump and sending unit, its the whole thing that comes out of the tank. a new one will plug right in.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  6. #6 Re: Fuel sending unit on a 2001 grand prix. 
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    Just wanted to pop the sending unit off and pop a new one on. Or is it easier to tap the finger piece off and tap the new on on.
    1997 Red GTP 182000 miles stock
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  7. #7 Re: Fuel sending unit on a 2001 grand prix. 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    I'm not sure.

    I replaced mine before dorman came out with a replacement, theirs might be a straight plug and play.

    Otherwise the way in the video works great.

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  8. #8 Re: Fuel sending unit on a 2001 grand prix. 
    I Write E85 Stickies Frosty's Avatar
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    Just get the doorman one. Litterally is plug and play for 30$. Its what I did and it works wonderful.
    "Lets just throw more boost at it and see what happens" -Frosty
    The Defacto Guide to tuning your car for E85. Read it and learn.



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  9. #9 Re: Fuel sending unit on a 2001 grand prix. 
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    Thanks Frosty , those are really good pictures. I appreciate the help.
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  10. #10 Re: Fuel sending unit on a 2001 grand prix. 
    GrandPrix Junkie The Guz's Avatar
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    Replaced my brothers fuel sending unit on his 03 with the dorman part. Just FYI the rubber seal that comes in the dorman kit doesn't fit to well. Well in my case it didn't. I ended up reusing the stock rubber seal.
    1999 GP GT 18" Boss 353 Concave|SLP CAI|Borla Cat Back|Plog|HV3|HV TB|ER Rockers|Custom Retrofit Projectors|GMPP Lowering|GMPP Handling|MPD F1|Full Diode Dynamic LEDs
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  11. #11 Re: Fuel sending unit on a 2001 grand prix. 
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    Does it plug in or do you have to splice the wires ? What is the best place to get it ?
    1997 Red GTP 182000 miles stock
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  12. #12 Re: Fuel sending unit on a 2001 grand prix. 
    I Write E85 Stickies Frosty's Avatar
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    Once you have the whole assembly out of the tank you basicaly do this

    1. unplug fuel pump
    2. unplug main 4 wire plug at top of assembly
    3. unclip old level sender from assembly
    4. reverse instructions to complete

    Should be a 4 to 5 min job once the canister is out. Unless your trying to put the wrong pump in the wrong canister the wrong way like I did :P
    "Lets just throw more boost at it and see what happens" -Frosty
    The Defacto Guide to tuning your car for E85. Read it and learn.



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  13. #13 Re: Fuel sending unit on a 2001 grand prix. 
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    Thanks, Amazon, AZ, Napa where can you get it?
    1997 Red GTP 182000 miles stock
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  14. #14 Re: Fuel sending unit on a 2001 grand prix. 
    Killa Bee Scottydoggs's Avatar
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    Quote Originally Posted by savannah View Post
    Shake the tank if the engine you are attempting to run is small enough to do so. If you can hear liquid sloshing inside, then there is likely gas in your tank.

    Petty Raceway

    did this post really happen? ^^^^^lol

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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