GMPartsGiant.com offers the wholesale prices for genuine 1998 GMC Savana 3500 parts. Parts like Heater Control Assembly are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.3L, 8 Cyl 5.7L, 8 Cyl 6.5L Diesel, 8 Cyl 7.4L. Model Code: 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA.