GMC Sierra 2012 Automatic Gasoline mileage: 300 KM or more 4WD GMC Sierra 2012, white, double, full option. Mileage over 400,000. The car has been with me for about a year, no issues. Equipped with a Trucool 40,000 BTU transmission cooler. For sale to serious buyers only. Contact WhatsApp /0505309382