Thread: What should I replace on a used 2004 4t56e

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  1. #1 What should I replace on a used 2004 4t56e 
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    Chris from Wisconsin again. Thank you all for your input on my last question. I have found a used 4t65e with 84,XXX miles from an Impala with the 3.8l that was a rear hit. With the tranny out, should I replace Anything prior to putting it in? I greatly appreciate your input.
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  2. #2 Re: What should I replace on a used 2004 4t56e 
    Killa Bee Scottydoggs's Avatar
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    put it in the car, then drop the pan and filter, add 8 qts of new tranny fluid and a new filter. call it done.

    blow your tranny lines out as well as the tranny cooler in your cars rad. you dont want any of your old fluid getting into the new/used tranny.

    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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  3. #3 Re: What should I replace on a used 2004 4t56e 
    GTP Level Member LeadfootCJ7's Avatar
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    I would consider pricing some of the known things that can go wrong in the valve body and replace those before installing it. Triple Edge Performance can help you with those.
    2007 Grand Prix GXP;2002 Camaro Z28 - tune, CAI, and exhaust
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  4. #4 Re: What should I replace on a used 2004 4t56e 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    What year is your car??

    Because that transmission if you are saying its from a 2004 might not even work with your car.

    SMGPFC Member #1
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  5. #5 Re: What should I replace on a used 2004 4t56e 
    Moderator dsmuts's Avatar
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    ^^^^This
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  6. #6 Re: What should I replace on a used 2004 4t56e 
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    Front pump seal is a good idea. On the year thing you can change the electronics and use it in a 2002 and older car
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  7. #7 Re: What should I replace on a used 2004 4t56e 
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    Sorry about that, I have a 2004 Grand Prix (also, it is a 4t65e, not 56). Huge thank you on the tips, I completely forgot about blowing the lines out and the front pump seal.
    Last edited by rumrun999; 01-16-2014 at 09:33 AM.
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  8. #8 Re: What should I replace on a used 2004 4t56e 
    Moderator dsmuts's Avatar
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    They may have different gear ratios. I'd check that out first
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  9. #9 Re: What should I replace on a used 2004 4t56e 
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    VERY good idea. I didnt check when i 4t65 swapped my car and with the cel it does all kinds of retarded things. Good tip.
    Quote Originally Posted by dsmuts View Post
    They may have different gear ratios. I'd check that out first
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  10. #10 Re: What should I replace on a used 2004 4t56e 
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    [QUOTE=They may have different gear ratios. I'd check that out first

    From what I have found, there is an FR-2 and an FR-9 gear code. Do these numbers sound correct? Where do I find the ID tag on the transmission to verify?
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  11. #11 Re: What should I replace on a used 2004 4t56e 
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    There are I think 4 different gear ratios 2.86 2.93 3.05 & 3.29
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  12. #12 Re: What should I replace on a used 2004 4t56e 
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    I know the impala will have either 3.05 or 3.29 gears. I thimk fr9 is the 3.29 ratio. Keep in mind youll need to use your original neutral safety switch
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  13. #13 Re: What should I replace on a used 2004 4t56e 
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    Don't forget to install a Sonnax P/N 84532-01K. An aluminum pan is also nice for the drain plug and the added cooling.

    http://www.grandprixforums.net/showt...74#post1110374
    Last edited by Shmoke; 01-18-2014 at 03:00 AM.
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  14. #14 Re: What should I replace on a used 2004 4t56e 
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    Quote Originally Posted by Shmoke View Post
    Don't forget to install a Sonnax P/N 84532-01K. An aluminum pan is also nice for the drain plug and the added cooling.

    http://www.grandprixforums.net/showt...74#post1110374
    Man, All you guys are awesome (in a guy way), I hope someday I have a bit of knowledge to return the favor, THANK YOU SO MUCH!!!!
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  15. #15 Re: What should I replace on a used 2004 4t56e 
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    Man, All you guys are awesome (in a guy way), I hope someday I have a bit of knowledge to return the favor, THANK YOU SO MUCH!!!!
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  16. #16 Re: What should I replace on a used 2004 4t56e 
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    Quote Originally Posted by l67ss View Post
    I know the impala will have either 3.05 or 3.29 gears. I thimk fr9 is the 3.29 ratio. Keep in mind youll need to use your original neutral safety switch
    The salvage yard confirmed it is a 3.05 tranny. Do you know where to look on my GP tranny for an ID tag?
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  17. #17 Re: What should I replace on a used 2004 4t56e 
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    You can check your trunklid for rpo codes. Theres a tag on the tranny bit it needs to b oit to read it
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  18. #18 Re: What should I replace on a used 2004 4t56e 
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    Im guessing it has 3.29s tho
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  19. #19 Re: What should I replace on a used 2004 4t56e 
    Donating Users GMR Badass's Avatar
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    L67SS....what front pump seal are you talking about?
    1999 GTP 2dr - Whipple 537whp.....for now
    1998 GTP 4dr - ST2, Cartuning PT61, IC - SOLD
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  20. #20 Re: What should I replace on a used 2004 4t56e 
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    Lol i think the parts store calls it a torque converter seal
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