CARFAX One-Owner. Clean CARFAX. 2007 Chevrolet Silverado 2500HD LT Silver Birch Metallic Duramax 6.6L V8 Turbodiesel, Allison 1000 6-Speed Automatic, 4WD, Ebony. 4WD Duramax 6.6L V8 Turbodiesel Allison 1000 6-Speed Automatic Odometer is 29219 miles below market average! Awards: * NACTOY 2007 North American Truck of the Year