2015 Chevrolet Tahoe/Suburban - 2015 GMC Yukon/Yukon XL: Pick Of The Litter Published on March 3, 2014 in First Drives by Benjamin Hunting Photo: GMC. The Denali features a monstrous 6.2-liter V8 in the GMC's engine bay in place of the standard 5.3-liter.
