GMPartsGiant.com offers the wholesale prices for genuine 2000 GMC C3500 Pickup 4WD parts. Parts like Engine Assembly-Fuel Related Parts 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: K2500 EXTENDED CAB STANDARD BOX.