The 2005 Chevrolet Silverado 2500HD is available as a 2-door, 3-seat regular side. Starting at $27,405, the 2005 Chevrolet Silverado 2500HD Work Truck 4x2 Extended Cab Long Box is powered by a 6.0L , 8 -cylinder engine mated to a manual transmission that returns an EPA estimated The top of the line 2005ChevroletSilverado 2500HDBase 4x2 Crew Cab Short Box , priced at $ 30,180 , is powered by a 6.0L , 8 - cylinder engine mated to a manual transmission that returns an EPA estimated