2012 GMC Sierra Denali 2500 HD test drive review. All compromises; no compromises

A big truck can transform you, frustrate you, and satisfy you. This is what I learned after spending a week with what may very well be the ultimate three-quarter ton General Motors truck on the road, a 2012 GMC Sierra Denali 2500 HD Crew Cab 4X4 with a Duramax 6.6-liter turbo diesel. Given the right circumstances, this is an uncompromising, amazing, sophisticated wonder. Given the wrong circumstances, it is nothing but compromises. But all told, I really loved that rig, and was truly sad to see it go.