GMC Sierra Z71 2017 Used Automatic Gasoline mileage: 287 KM 4WD GMC Sierra 2017, white, Al-Jomaih agency, Z71, fully loaded. Mileage: 286,xxx The car is for personal use. I bought it at 40,000 mileage and have had it since 2021, maintaining its original condition. The vehicle has a bedliner, upgraded shocks, and upgraded control arms.