GMC Sierra Z71 2012 Automatic Gasoline mileage: 300 KM or more 4WD The days are coming when I will inspect it. Peace be upon you. Sierra 2012 pickup double. V6. It has two batteries. Rear camera. Converter. Gear cooler. Electronic tire balancer. Ready for a tank, you just need the tank. New tires, I just bought them. New rims. I maintain its oil every 4 thousand, at most 5 thousand. I just changed the entire undercarriage, everything is clean. Work and go. Mileage 348896, subject to increase. For sale. For sale.