The 2006 Chevrolet Silverado 2500HD is available as a 2-door, 3-seat regular side. Starting at $26,395, the 2006 Chevrolet Silverado 2500HD LS 4x4 Regular Cab is powered by a 6.0L , 8 -cylinder engine mated to a manual transmission that returns an EPA estimated The top of the line 2006ChevroletSilverado 2500HDWork Truck 4x2 Extended Cab Short Box , priced at $ 24,515 , is powered by a 6.0L , 8 - cylinder engine mated to a manual transmission that returns an EPA estimated