I recently got to spend time in the new Sierra 2500 Denali Ultimate truck. What all does it do? Well it "only" tows up to 22,000 lbs, has more cameras than a TV station, packs a punch with its 6.6L Duramax Diesel engine, smells better than a bootmaker's shop with all of the real leather and wood, and rides as smooth as a sedan with its shocks and lift kit.