The Basics: Like GM's other full-size trucks, including the Cadillac Escalade, and the Chevrolet Tahoe and Suburban, the 2012 GMC Yukon isn't the hot seller it was a few years ago. Many families have moved on to more space-efficient and fuel-efficient crossover designs, yet it would be premature to call the Yukon out as obsolete. Especially when...
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