Does anyone have any Pics of what they did?

why do you want to do this? I'd suggest keeping the radiator cooler for the primary cooler and let the external cooler do the rest of the work, afterward.

Others have said that they stop the transmission fluid from going into the Radiator. It goes directly to the trans cooler.

this is said to help lower tranny fluid temps. the auxillary cooler is much more effective at cooling than the radiator cause radiator just heats the fluid back up from the liquid to liquid heat transfer from coolant to tranny fluid. at least that is what i was taught.

I disagree with the thought that it will heat the fluid back up. At one time, I would have thought otherwise, though.

The factory setup does a good job of cooling (int w/ext. cooler). The internal cooler does not cause the ATF to climb to the same temp. as the engine thermostat. We've probably all seen the charts that show transmission degradation with 210 deg. F and higher and I understand that. However, the internal cooler does not cause the ATF to go this high.

Under highway driving conditions (65-70 mph, unloaded, flat) I can drive for three hours straight and the transmission temperature will not come above 140 degrees on the guage. Under towing conditions (60-65 mph, loaded at about 12,000+ gross, hills, A/C on) I may see the temp. rise to 180-190 on a long grade. I have seen 200-210 on one occasion when towing about 13,000 lbs.+ on a VERY long grade going up a mountain in southern Ohio. At the tops of these long hills, I'm not traveling at full speed. Sometimes my speed backs down (by my choice) to 50-55 because I'm not always certain what's on the other side of that crest. However, as soon as I'm back out and traveling at 55-65 mph again without a hill to climb, the temperature steadily drops back to the 160 range. On a long steady flat road, it will drop back to about 145 and will stay there until I encounter another hill.

The point, here, is that the cooling of the radiator is helping at the slower speeds when there isn't enough air moving past the ext. cooler to have it function at it's full performance level. Others may disagree, but I'll keep mine just as it is because I've seen the results for myself. I don't mean to draw an ultimate conclusion for all trucks around the world by the findings on my own (ONE) truck, but it makes sense to me that this would be the normal findings.

Hope this helps.

SnowDrift

If you just bypass the radiator cooling: The trans temps will be VERY high in
' in town' driving in a Hot climate.
Not enough air flow through the air cooler. tryed it in florida, did't work.
Will need aux cooler with a fan if you want to bypass radiator.

I run a 2nd cooler under the bed with electric fan & thermostat control, for a total of (3) 1st is the radiator one, then GM aux cooler in front of rad, and 3rd a Deraile remote kit under the bed, hauling 18K# trailer on 100F MS day max temp 190F in pan