The 2006 Chevrolet Silverado 1500 SS is available as a 4-door, 5-seat regular side. Starting at $32,930, the 2006 Chevrolet Silverado 1500 SS Base is powered by a 6.0L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 19-mpg on the highway.