2004 Chevrolet Silverado 2500HD 4dr Crew Cab LS 4WD SB (6.0L 8cyl 5M)
156,000 miles of towing, hauling, and mountain driving as a contractor and hunter the only problems Ive had are the wheel bearings and prndl switch needed to be replaced. As comfortable as long distance driving in an HD pickup is really gonna get. Interior layout is well thought out but materials are slightly cheap. Leveled out with 33" mud tires I still get about 16 mpg in town and 20 mpg on the highway. With a heavy job trailer it doesn't pull quite as strongly as I would like but I don't think anything ever will. Off road capability is as good as it needs to be.
The only improvements I would make have been made, more power, stock exhaust brake, updated exterior design and improved interior materials.