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#4437573 - 06/21/17 12:29 PM Shopping for a transmission cooler
HawkeyeScott Offline


Registered: 01/11/07
Posts: 785
Loc: El Oeste
I'm in the market for a transmission cooler for my 2008 Suburban with the 4L60E. This comes after our first travel trailer tow with this particular rig. Normal ATF operating temp range is 180-200 degrees, per the manual. I topped 230 up the longest, hardest pull (about five miles uphill) in 92 degree ambient heat.

I haven't bought a transmission cooler before. Anything you suggest? Anything I should steer clear of? I'll do the install myself. Ideally, the budget would be $75 or less.

Thanks in advance.

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#4437587 - 06/21/17 12:42 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
BigJakeChevy Offline


Registered: 07/26/15
Posts: 126
Loc: Alberta
Here's my set up. Bypassed the engine radiator. Used to tow a 16' enclosed trailer for work everyday with 70/30 hwy/city doing 450kms a day. While in the city temps never went past 75c. I also threw in amsoil torque drive atf!




Edited by BigJakeChevy (06/21/17 12:48 PM)
_________________________
2007 Silverado Classic 5.3L PPPP 10w30 455,000kms

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#4437589 - 06/21/17 12:44 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
Olas Offline


Registered: 12/11/13
Posts: 3933
Loc: Manchester, England
If you want to do it n the cheap look for a factory combined radiator/oil cooler - it works for manufacturers so it'll work for you.
Mocal&thermostat is better though.
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#4437599 - 06/21/17 01:00 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
lexus114 Offline


Registered: 05/12/08
Posts: 6298
Loc: Easton, PA
wow nice set up. but does your AC still work good with those coolers in front of the condenser like that?
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#4437612 - 06/21/17 01:11 PM Re: Shopping for a transmission cooler [Re: lexus114]
BigJakeChevy Offline


Registered: 07/26/15
Posts: 126
Loc: Alberta
My AC works perfectly! When my engine fan turns on it really helps the trans temps too lol! Doing a trans cooler like this is the cats [censored] to keep things cool!
_________________________
2007 Silverado Classic 5.3L PPPP 10w30 455,000kms

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#4437618 - 06/21/17 01:16 PM Re: Shopping for a transmission cooler [Re: BigJakeChevy]
Lubener Offline


Registered: 01/22/11
Posts: 2576
Loc: N.Ohio
Surprised your engine doesn't overheat with all that hardware blocking airflow into the radiator. I would go with a H.D. cooler downstream from the factory cooler in the radiator, feeding back into the transmission. I went with a Hayden and it was below 75 dollars and took an hour to install.


Edited by Lubener (06/21/17 01:19 PM)
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#4437621 - 06/21/17 01:18 PM Re: Shopping for a transmission cooler [Re: Lubener]
BigJakeChevy Offline


Registered: 07/26/15
Posts: 126
Loc: Alberta
Engine cooling is just as it was before.
_________________________
2007 Silverado Classic 5.3L PPPP 10w30 455,000kms

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#4437624 - 06/21/17 01:21 PM Re: Shopping for a transmission cooler [Re: BigJakeChevy]
Lubener Offline


Registered: 01/22/11
Posts: 2576
Loc: N.Ohio
In Alberta and north yes, go down to Texas and I have my doubts.There is a such thing as overkill


Edited by Lubener (06/21/17 01:22 PM)
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#4437625 - 06/21/17 01:21 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
CKN Offline


Registered: 10/14/14
Posts: 3700
Loc: Utah
Dex 6 is good for 275 degrees. This subject comes up every summer over on the truck boards. I tow all over the Roockies on the stock cooler as shown in "bigjakechevy" first post without issue.

Does it get above 200-yes. But it's nothing to worry about and cools right down on the down hill side.


On my last truck (2011 Silverdao)-I drained out the fluid at 50K-with half of those miles towing. And the fluid still looked nice and red.



Edited by CKN (06/21/17 01:22 PM)

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#4437637 - 06/21/17 01:34 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
Chris142 Offline


Registered: 06/05/03
Posts: 16820
Loc: Deplorable in apple valley, ca
Mount it like bigblackchevy did. Dont put those ziptie things through your radiator or condenser!
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#4437638 - 06/21/17 01:36 PM Re: Shopping for a transmission cooler [Re: lexus114]
Chris142 Offline


Registered: 06/05/03
Posts: 16820
Loc: Deplorable in apple valley, ca
Originally Posted By: lexus114
wow nice set up. but does your AC still work good with those coolers in front of the condenser like that?
have you seen the new trucks? They stack all kinds of coolers in front of thev adiator these days.


Edited by Chris142 (06/21/17 01:36 PM)
_________________________
02 Wrangler durablend 10w40
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04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
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#4437643 - 06/21/17 01:39 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
Rhymingmechanic Offline


Registered: 08/13/04
Posts: 1326
Loc: VA
HawkeyeScott:

Does your Suburban have the factory trans cooler, as shown in the middle of the second photo above?

(It seems like BigJakeChevy is using both the factory auxiliary cooler and a new one, but not the in-radiator cooler.)

I have always heard good things about Tru-Cool coolers. I think the B&M-branded plate coolers are from the same manufacturer.

Tru Cool Trans Coolers

Your budget would cover a good cooler, but not a fan. Ram air will work once you're moving, though.

A pan with a drain plug would make maintenance easier. I would pay/save for that before an auxiliary fan.

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#4437644 - 06/21/17 01:39 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
bullwinkle Online   confused


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
You can put more than that in front in front of the condenser & radiator & it'll still work, as long as it's all kept clean & bug-free. The GMC C3500 in my sig has an aux trans cooler AND a factory oil cooler in front of the condenser & radiator, A/C still works fine, it just kicks the fan clutch on occasionally on long uphill runs when towing in hot weather.
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#4437711 - 06/21/17 03:08 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
Dyusik Offline


Registered: 09/26/14
Posts: 1982
Loc: US-WA
Just ordered H7B from tru cool. Seemed to be best on paper/ web reviews.
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#4437738 - 06/21/17 03:34 PM Re: Shopping for a transmission cooler [Re: HawkeyeScott]
AlaskaMike Offline


Registered: 05/28/10
Posts: 272
Loc: Alaska
Keep in mind that placing stuff in front of the radiator doesn't really block the airflow if there's some space (half inch or so, maybe more) between them. Does it reduce airflow? Sure, but usually not enough to worry about.

It would truly be a marginally designed factory cooling system to be rendered inadequate by a couple of mounting straps placed in front of the radiator!

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