GMPartsGiant.com offers the wholesale prices for genuine 2000 Chevrolet Silverado 1500 4WD parts. Parts like Wiring Harness/Auxiliary 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 4.8L, 8 Cyl 5.3L. Model Code: 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX.