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Tahoe & SuburbanThe power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.
From what i gather the Auxiliary Fan was an option that not many took so i haven't been able to find any examples of it. More commonly you will find a Transmission Cooler in the place where the aux fan goes if the truck came with factory tow package. I think only the larger engines got the aux fan as standard. This is a screenshot form the Shop Manual