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  1. #1
    SE Level Member Rnungaray08's Avatar
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    Default Trans cooler for GXP

    I want to order a trans cooler before I even start thinking about any other mods. Which ones have you guys use that you recommend?? And also Im thinking of a transgo shift kit as a member recommended to prolong the life of the tranny

    2006 Grand Prix GXP
    Sport Red Metallic, 20% Tint
    Future Mods: Trans Cooler(Ordered)
    CAI, Intune with diablew tune, exhaust

  2. #2
    Moderator BillBoost37's Avatar
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    Default Re: Trans cooler for GXP

    I'd likely see what TripleEdgePerformance.com recommends. Dave and the guys have dealt with a number of GXP's and have experience in the heat issues.


    2010 Audi A6 Dual IC's

  3. #3
    GrandPrix Junkie jteske88's Avatar
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    Default Re: Trans cooler for GXP

    been told go big and plumb inline, if cold is an issue in your area put a thremostat on it
    2005 GP GXP-cocor tuned-poly's-lots of sundown

  4. #4
    I live here. DirtDog's Avatar
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    Default Re: Trans cooler for GXP

    If u email triple edge performance they have a bolt on tranny cooler that is a complete bypass of the stock radiator that is supposed to be awesome. I plan to order one my self. They sent me pics of if and it has a couple inches between it and the radiator and bolts to preexisting bolts on the frame of the vehicle. I also researched the parts they use to make it and the price they charge is actually good since the weld the fittings and all on.

    Although currently I'm just running two cooler I bought from oreillys
    http://www.grandprixforums.net/my-06-gp-gxp-72403.html
    OBX headers, TEP tranny cooler, ls1 IM fuel rails and injectors, ls2 TB, ls7 MAF, full custom exhaust, Quad retro headlights, full out front and rear suspension work, tuned by HPT by me 8====>


  5. #5
    Donating Users 91parkave's Avatar
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    Default Re: Trans cooler for GXP

    I'm just running one and bypassed factory and it sits in the bumper. It was the rv sized one but I have no issues in Arizona heat and always under 185 degrees. I disagree with leaving the factory one in place at all but that's another story debate. Regardless the coolers you can buy at your local auto parts store will Help
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k

  6. #6
    GrandPrix Junkie jteske88's Avatar
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    Default Re: Trans cooler for GXP

    Not gonna jack the thread at all but I would like to conversation on in-line or not.
    Back to the subject at hand, also have RV size. Not even in yet and rarely see 200 degrees.
    2005 GP GXP-cocor tuned-poly's-lots of sundown

  7. #7
    Donating Users 91parkave's Avatar
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    Default Re: Trans cooler for GXP

    I say run standalone for a couple of reasons gxp's thermostat doesn't open till 192 degrees even if you have a aftermarket thermostat the fans will not come on till 192 degrees regardless of tune unless you're running a 2 bar os from HP tuners which only 2-3 turbo guys are running. So you're factory trans cooler is also co located with the radiator Having trans fluid run through it will keep it cooking and not give the fluid a real chance to cool back down before it enters Trans. Then you add another cooler well then the transmission has to Pump more fluid around to the cooler you install which in turn cools a little but it can only do so much. So at that point you're not maximizing your investment in buying the second cooler. Running standalone keeps it efficient without the heat soak and minimizing the amount of fluid having to be pumped around. That's my logic and has worked Well. And for you guys talking about cold weather theory I get it but if you're that guy that likes to do a lot of asshole driving before the car even warms up nothing will save your transmission anyway. And not to mention the transmission has tables already built in for colder weather operation.
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k

  8. #8
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    Default Re: Trans cooler for GXP

    If I have a standard transmission, can I replace it with a HD transmission from triple edge? In doing so will there need to be anything else I need for suck swap out?

  9. #9
    GT Level Member
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    Default Re: Trans cooler for GXP

    Dave's transmissions are top notch.

    I had one in my GXP with all the goodies and 3.69's. Would do it again in a heartbeat. It really woke up the car after the gear and tune. Really helped pull it together.

    The install was a lot more time consuming compared to a 3800 (since they're basically the same transmission)...tons of little clips, a few different brackets, etc.

    However after the install the radiator was bypassed and I ran a Tru-Cool 4590 RV cooler. Never saw temps over 182* even beating the snot out of it on a hot day; completely different from the factory setup with no cooler that would go north of 220* quite often.
    1999 Chevrolet Silverado K1500 Classic Z71 - Intake/Gibson Exhaust - The Daily
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    Sold WBody's: '98 GT, '98 GTP, '00 GTP, '03 GTP, '05 GXP

  10. #10
    GXP Level Member SDGTP99's Avatar
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    Default Re: Trans cooler for GXP

    Standalone from TEP Helps. But I still sometimes see high temps on hot days w lots of driving.
    OverKilled, HAI, Ported Throttle body, Ported intake, ZZP DP, Magnaflow, UMI ta's, GMPP STB's, CCS springs, tinted tailights, roof rails, TEP cool'r, G8 hood. Glass Gearbox.

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