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06-22-2009, 06:20 PM
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Hummer Expert
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Join Date: May 2007
Location: PHOENIX AZ
Posts: 681
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Re: Tranny cooler mod??
and it makes the trans run cooler and that ain't bad.
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06-22-2009, 10:27 PM
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Hummer Veteran
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Join Date: Mar 2009
Location: KS
Posts: 116
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Re: Tranny cooler mod??
I would like to have thorough instructions....i don't wanna Screw anything up because I disconnected the wrong hose etc etc....I have the cooler in hand with the bypass kit.....just need to install now....  |
06-23-2009, 07:51 PM
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Hummer Veteran
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Join Date: May 2009
Location: US/FL/Lakeland
Posts: 109
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Re: Tranny cooler mod??
Has anyone done this on a 2008+ with the six-speed tranny? Has the design changed at all such that this mod isn't necessary or would any of you 2008+ owners do it anyway?
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Mike
2000 HUMMER HMCS, kevlar flat black, Rubber Duck lift, Predator stage 3 kit, Predator (Wilwood) Big Brake kit, a work in progress...
2008 H2, graystone, air suspension (DELETED), U-steps, SMA brushguard w/valance (DRLs replaced by PIAA 520s), black taillight guards/locking fuel door/roof crossbars (x4), Cognito UCA/pitman-idler, Bilstein shocks, Rancho steering stabilizer, Kryptonite tie rods, green keys, Fuel D525 20" Revolver, 37" Nitto Ridge Grappler
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07-05-2009, 06:19 PM
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Hummer Veteran
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Join Date: Jan 2008
Location: High in the Colorado Rockies
Posts: 210
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Re: Tranny cooler mod??
Quote:
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Originally Posted by kchummer
I would like to have thorough instructions....i don't wanna Screw anything up because I disconnected the wrong hose etc etc....I have the cooler in hand with the bypass kit.....just need to install now.... |
There's more than one way to do this, but I can give you a couple tips to make this easier:
First of all, remove the passenger side plastic fender well, it's not that hard and it will give you easy access to the tranny cooler lines. You can't really access the cooler lines any other way (especially at the bottom of the radiator).
Second, if your installing the thermal bypass you need to identify which cooler line is coming from the tranny. The easiest way is to disconnect the two lines at the front of the truck and rubberband a plastic bag on the end of each line, and start the engine for a few seconds. The bag with the tranny fluid in it will be the line coming from the tranny. You don't want to make the mistake of hooking the return line to the inlet of the thermal bypass.
BTW there was a service manager of a Texas Hummer dealership who posted regularly on the Hummer X forums who stated he saw as many as 3 H2's per month come in with a ruptured internal radiator tranny cooler.
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'05 H2 Lux, 37" KM2's on 17" Hutchinson Double Beadlocks, Cognito UCA's, Cognito Sway Bar Links, Custom Hydro-Assist Steering Upgrade, Eaton Front Differential Locker, 1" Rear Coil Spacers, Chevy Green Key Torsion Bar "Lift," Bilstein Shocks, Warn 9.5ti Multimount Winch, Dual Optima Yellow Top Battery's, Piaa & Hella Off-road lights, Gobi Rack, Tru-cool External Transmission Oil Cooler, Diablo Predator Hi-Octane Tune.
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07-09-2009, 10:53 PM
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Hummer Veteran
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Join Date: Jul 2007
Location: West Coast Canada
Posts: 83
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Re: Tranny cooler mod??
did they come stock on some models?
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06-11-2012, 02:51 AM
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Hummer Veteran
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Join Date: Nov 2011
Posts: 101
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Re: Tranny cooler mod??
Does anyone have pictures for the external cooler installation?
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06-12-2012, 11:38 PM
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Hummer Professional
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Join Date: Nov 2009
Location: Windermere, FL
Posts: 297
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Re: Tranny cooler mod??
Do you want pictures of the actual process? Or just one that's already installed? I just had a cooler installed, along with dual electric fans. I can snap a few pics, but it will be a few days. PM me to remind me.
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White 2005 SUT, Lifted 7.5" via Fabtech/custom work, Fabtech Dirt Logic 2.25 shocks, 40x15.5x22 Toyo's, black 22" Fuel wheels, 4.88 gears, Dynatech long tube headers, Magnaflow exhaust, Air-raid intake, Superchips programmer, Edlebrock panhard bar, Cognito UCA's, Kryptonite tie rods, Cognito pitman/idlar arm gussets, Hotchkis swaybars and trailing arms, Amp Research steps, E&G fender flares, PIAA SMR's, smoked roof lights (bulbs removed), black suede headliner, 13" JL's under seat
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06-13-2012, 05:29 AM
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Hummer Expert
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Join Date: Sep 2011
Location: Surprise, AZ
Posts: 717
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Re: Tranny cooler mod??
I'm dying to throw some electric fans in my rig but have no clue about wiring. AC in AZ doesn't care for mechanical fans lol.
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