Sierra 1500 Elevation 4D Crew Cab EcoTec3 5.3L V8 10-Speed Automatic 4WD Onyx Black Black Cloth 10-Way Power Driver Seat Adjuster w/Lumbar 2 Charge/Data USB Ports Inside Center Console 3.23 Rear Axle Ratio 6 Rectangular Black Tubular Assist Steps (LP...