Thread: Transmission cooler line

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  1. #1 Transmission cooler line 
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    Which line is the feed and return for trans cooler line? I've searched but didn't have much luck. I need to replace a line that is leaking.

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  2. #2 Re: Transmission cooler line 
    GTP Level Member LeadfootCJ7's Avatar
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    Is the line leaking at a crimp or at the connection to the trans/radiator? My GXP started leaking at the trans on one line and the radiator on another shortly after I bought it. A little research on here led me to remove the line and replace the o-rings at each end. That solved the problem. It has been leak free for years since.
    2007 Grand Prix GXP;2002 Camaro Z28 - tune, CAI, and exhaust
    2006 GMC 2500HD - ATS high flow manifolds and uppipes, turbo back exhaust, blocked EGR, Denali headlights, Reflexxion Cown Hood
    1994 Olds Cutlass Supreme 2 door
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  3. #3 Re: Transmission cooler line 
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    Looks like its at thre crimp or near. Line was pretty nasty with corrosion

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  4. #4 Re: Transmission cooler line 
    GTP Level Member Tonkin2000GT's Avatar
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    They are a dealer part that's where I got mine or a junkyard if you can find one.

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    00 Grand Prix GT, top swapped, .020 FMP, GT1 Cam, SFI Crank pulley, SSM90, 3.3 MPS, ZZP ported Gen 3/LIM, ported heads, #90's, N* TB, SLP Intake/Headers/Catback, F-body brakes, KYB AGX, Aeroforce, AEM, 93 octane.
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  5. #5 Re: Transmission cooler line 
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    ^ You can get the trans lines aftermarket. The first one on the list is dorman and it says it is the lower hose. the second one on the list is the upper I believe. it has the longer length after the bend. These are 04 up results.

    DORMAN 624971 {#15264588} Info
    Radiator Oil Cooler Inlet (Lower)
    $9.44
    ACDELCO 15264588 GM Original Equipment Info
    TRANS OUTLET,RAD INLET; 2nd Design; W/BEVEL WASHER ATTACHED TO TRANS OIL COOLER QUICK CONNECT FITTING)(USE ON VEH BUILT ON & AFTER 2/1/04)(1ST DES 20793004
    $11.08
    ACDELCO 15264589 GM Original Equipment Info
    TRANS INLET,RAD OUTLET; 2nd Design; W/BEVEL WASHER ATTACHED TO TRANS OIL COOLER QUICK CONNECT FITTING)(USE ON VEH BUILT ON & AFTER 2/1/04)(1ST DES 20793005
    $14.46
    ACDELCO 20793004 GM Original Equipment Info
    Inlet; 1st Design; USE ON VEH BUILT PRIOR TO 2/1/04)(2ND DES 15264588
    $38.79
    ACDELCO 20793005 GM Original Equipment Info
    Outlet; 1st Design; USE ON VEH BUILT PRIOR TO 2/1/04)(2ND DES 15264589
    $38.79

    Last edited by rickisrad; 08-18-2016 at 08:33 AM.
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  6. #6 Re: Transmission cooler line 
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    O'Reillys had the lower. Which was the one leaking

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