GMC Sierra 2011 Automatic Gasoline mileage: 300 KM or more GMC Sierra, the car is good, engine and gearbox guaranteed. Its maintenance invoices are still in the drawer. The car is very good for the user. V8 cylinder. The car is without 4WD. I accept exchange for an Elantra or an economical car, no problem. The car is for sale by offer, thank you.