GMPartsGiant.com offers the wholesale prices for genuine 2016 GMC Savana 2500 parts. Parts like Automatic Transmission Upper Control Valve Body Assembly 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 SAVANA, 3/4 TON PASSENGER SAVANA.