The 2015 Chevrolet Silverado 3500HD is available as a 2-door, 3-seat regular side. Starting at $34,860, the 2015 Chevrolet Silverado 3500HD WT 4x2 Regular Cab Dual Rear Wheel is powered by a 6.0L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2015 Chevrolet Silverado 3500HD High Country 4x4 Crew Cab Short Box, priced at $55,430, is powered by a 6.0L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated