GM Yukon XL Denali Transmission Temps
My main tow vehicle is my RAM CTD, but when we take the RV as well the truck has to pull my 7000 pound boat. So then we use my 2011 Yukon XL Denali to tow the Malibu. It has always run hot - both...
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A bit too warm and factory coolers are marginal at best. I'd be adding an auxillary cooler like a Hayden Swirl Cool 2 pass . I run 2 of them on my F350 and my trans temp never gets above 195.
