Need more cooling, which one?

[Scraps66]

I have an '11 SLE Yukon. Bought used last February. It's stock w/o a towing package. This past summer on those really hot days in the NE, I noticed trans temperatures over 200 while towing my boat. Any other vehicle I've owned had the towing tranny cooler so I want to add one to give me a little more protection while towing.

What size cooler do I want? Seem to remember a size "30" or 40.

Thanks.

 

[InTruckDesign]

I would look at the TruCool by Long...either a 30k or 40k, I had a 30k on my tahoe and itwas more than sufficient even with a higher stall converter.