2011 GMC Sierra Denali 3500 HD Dually, ReviewedS

Some car guys sling horsepower numbers with the same cavalier attitude Brett Favre displays for phallus photos. Heavy-duty truck guys know better. The Duramax-engined 2011 GMC Sierra Denali 3500 HD dually's 397 HP? Unimportant. 765 lb-ft of torque? Epic. [PickupTrucks]