GMC Sierra 2500HD 2010 Used Automatic Gasoline mileage: 247 KM 4WD Used 2010 GMC Sierra SLE for sale Automatic 6-speed transmission Gasoline Mileage: 247 Selectable 4WD Extended cab I have the "Muwjaz" report available. Used 2010 GMC Sierra SLE for sale Automatic transmission Gasoline Mileage: 247 4WD 6-speed transmission 8-lug wheels Contact via and I will call you back. Presenting a Sierra 2500HD White color Beige interior