GMPartsGiant.com offers the wholesale prices for genuine 2016 Chevrolet Silverado 1500 Hybrid 4WD parts. Parts like Assist Step are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 5.3L. Model Code: 1500 CREW CAB, 1500 CREW CAB STANDARD BOX.