Best Transmission Cooler, Cold Air Intake, and Tuner for 2015 GMC Yukon XL 5.3L Towing in Mountains
I was wanting to know if it makes sense to swap my stock tranny cooler with aftermarket one or can I do something else to keep tranny cooler for those mountains passed when ever my vehicle is 2/3 rds up the pass hauling boat 7k# and my RPMs...
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