10-Speed Automatic, 4WD, Black Cloth. $2,250 off MSRP! 2021 Chevrolet Silverado 3500HD LT Duramax 6.6L V8 Turbodiesel 4WD Black The David Stanley Advantage! With our 72-hour exchange policy, Tires for life, and our certified Come see us for details on the 72 hour... via vAuto, Inc.