GMC Sierra SLE 2024 Automatic Gasoline mileage: 89 KM 4WD GMC Sierra 2024, second owner, mileage 89, can be increased. The engine is in agency condition, no modifications have been made to the car. The gearbox is agency. The car is clean, a desirable find for the user. The engine, gearbox, and airbags are all guaranteed, God willing. There is one piece that has a light spray for the serious buyer.