GMC Sierra SLE 2000 Manual Gasoline mileage: 1 KM The vehicle has a modified 6.0 iron block. The engine is clean and I change its oil to 5w40 Mobil. It has no noise and I change its oil every 3500 km. The work was done at Al-Ameri Garage in Dammam. The transmission is also modified to a manual iron transmission. All gears are sound and its shifting is clean and smooth. Price is by private offer, and its prices are known. Reason for selling: God knows I don't want to sell, I've put a lot into it, but I'm forced to. May God compensate us with better.