GMC Terrain SLE 2021 Automatic Gasoline mileage: 26 KM For sale GMC Terrain SLE, model 2021, mileage only 26,000 km. One owner. Full exterior protection with PPF, heat insulation, full interior upholstery, and a dashcam. The car is like new. Fully serviced, new tires, new inspection and registration. The highest offer is 55,000.