PepperB
Hernando, MS
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Joined: 04/03/2008
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I've been researching transmission coolers this week. I have an '07 Silverado V8, 4.8L with 3.23 gear ratio and a towing package. My dealer (chevy dealer) told me to get a transmission cooler to tow my new '08 Jayco JayFlight 28BHS. I took it out last weekend and the transmission got up to 192 running in 2nd at about 3500-3700 rpm going straight into a 25 mph headwind (thanks to all of you who responded with help in my "need input" thread).
Anyway, I go to see how much room I have for a cooler, and see this:
(looking down at radiator)
It sure looks like a transmission cooler to me, but then I'm new at this. I would think that my Chevy salesman would know whether or not I had one.
So my questions is simple...is this a transmission cooler?
Also...would it be of any benefit for me to either add another one or replace this one with a bigger one?
MIKE-2007 Chevy Silverado Crew Cab, V8 4.8L
TIGER-2008 Jayco JayFlight 28BHS (bunk house slide)
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JIMNLIN
Big Cabin, OK
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Joined: 09/14/2003
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I sure wouldn't recommend asking any salesman any tech question as most aren't that experienced in the tech field. BUT your dealers service tech can give you that info. It looks like a auto tranny cooler but without tracing the fluid line out of the tranny its a guess unless another owner/poster has one. I would be surprised that a 1500 4.8 engine and a 3.23 axle would have a cooler that big. A bigger cooler will help with towing duties on keeping tranny temps down especially for a 3.23 geared tow vehicle.
Jim
'03 2500 Dodge/Cummins HO 3.73 6 speed manual Jacobs
'97 Park Avanue 28' with two slides
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shaela21
Victoria, BC
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Joined: 08/12/2004
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Sure looks like it. Mine is located just left of the rad and about 2 inches in front of it. I would bet that is it. And as far as dealers, does he even know what a tranny cooler is?
Cheers.
Bob & Ang
Shaela & Duncan
2008 GMC Sierra 1500
2006 Outback 21RS
Victoria, BC
Canada "It's all good"
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ScottG
Bothell Wa.
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Joined: 02/25/2005
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Could also be an eng oil cooler but it looks like a trans cooler.
You could crawl under the rig and see if the lines go back to the tranny.
BTW, I agree with Jim, never ask a salesman tech questions.
Scott, Grace and Wesly
2003 Dodge 3500 4x4 Cummins (lightly bombed),
2004 Forest River 25RKS many, many mods.
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cdroggen1945
Pahrump, Nevada USA
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Joined: 10/10/2004
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Just craw under and follow the lines if they go to the transmission they it is you cooler you will have 2 lines one in and one out.
Dan
Dannie & Carole
1994 Southwind ford 460 2006 Chevy Malibu
Brand New Banks Power Pack W/
Transcommand What a differance it made. No more crawling up the hill.Were on CB 13 are you
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TennesseeBob
NW Tennessee
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Joined: 11/25/2005
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Can you see where the lines are going. That could be your oil cooler --oops someone beat me to it
2001 Dodge 2500 V10
2004 Newmar American Star 32RLKS
Paris,TN
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mecreature
Indianapolis, IN
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Joined: 09/27/2004
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follow the lines and see where they go.
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smkettner
Southern CA
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Joined: 03/21/2005
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The fluid is probably also cooled by the radiator. So one line will go to the radiator and the other to the transmission. Yep I think you have a fine transmission cooler there and you should have no worries. Although you may want to clean the bugs off. 
2001 F150 SuperCrew 5.4 Lariat Offroad 4x4 Tow Package 4.10 Truetrac
2006 Keystone Springdale 249FWBHLS
12K SuperGlide, KGE3000Ti 2.3kw rated 2.6kw max
Frank's voltage booster, Prosine 1800 powered by 4 GC2 batteries
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amaze
Ohio, New Albany
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Joined: 03/29/2006
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It could be your A/C condensor. Would not know for sure unless you follow the lines.
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jesterdog
Texas
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Joined: 05/04/2007
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You may see your lines go into the side of the radiator, then into the trans cooler...
2001 Excursion 3.73 geared V-10
2006 Coachmen Spirit of America 24TBQ
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