GMPartsGiant.com offers the wholesale prices for genuine 1999 GMC Savana 3500 parts. Parts like Accelerator Control Engine Compartment are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 5.7L, 8 Cyl 6.5L Diesel, 8 Cyl 7.4L. Model Code: 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER.