GMPartsGiant.com offers the wholesale prices for genuine 2003 GMC Savana 1500 2WD parts. Parts like Exhaust System 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 5.3L. Model Code: 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER SAVANA.