2006 Chevrolet Silverado 3500 LT2 4dr Crew Cab LB DRW (6.0L 8cyl 4A)
Purchased this vehicle specifically to tow our ToyHauler ('07 Weekend Warrior 32 foot long travel trailer). Fully loaded it weighs about 11,000 lbs. We travel in the west, so mountain driving is the norm. I am pleased with the towing ability and ride comfort this vehicle affords. While deciding which vehicle to buy, I researched other brands and kept coming back to this one over and over again. It basically sold itself.
This thing is a towing beast. Forget brand loyalty and just feel the brute power of this thing. The Allison transmission is great and makes towing a dream over mountainous terrain. Fuel economy is great considering the size of the thing. Easy to maintain (it's got a spin on tranny filter).
Better towing hitch (stock tow hitch is prone to failure).