GMPartsGiant.com offers the wholesale prices for genuine 2012 Chevrolet Express 2500 2WD parts. Parts like Radiator Hoses are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 4.8L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel. Model Code: 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS.