GMPartsGiant.com offers the wholesale prices for genuine 1998 GMC Suburban C1500 parts. Parts like Wiring Harness Intermediate 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. Model Code: 1/2 TON.