The 2012 Chevrolet Express 3500 is available as a 3-door, 2-seat cargo van. Starting at $32,130, the 2012 Chevrolet Express 3500 LS Passenger is powered by a 4.8L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 11-mpg in the city and 17-mpg on the highway. The top of the line 2012ChevroletExpress 3500Diesel Extended Cargo , priced at $ 42,745 , is powered by a 6.6L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated