Chevrolet Express Cargo vans are available in regular 135-in. and extended 155-in. wheelbase lengths. The 1500 Series vans include light-duty models rated at 7,300 lbs. GVWR. The 2500 Series includes heavy-duty models rated at 8,600 lbs. GVWR. The heavy-duty 3500 Series includes full-bodied models rated at 9,600 lbs. GVWR with the 6.0L gas V-8 and 9,900 lbs. with the Duramax 6.6L diesel. Features include: six-speed automatic transmissions; right-hand (driver-side) cargo doors; all-wheel drive; and available 6.6L Duramax turbo-diesel engine with B20 biodiesel capability.