GMC Sierra Z71 2015 Automatic Gasoline mileage: 300 KM or more 4WD For sale GMC Sierra 2015, full option. Specifications include remote start, lane departure warning radar, front and rear sensors, rear camera, and other known Sierra specifications. It has additions: a 40,000 BTU transmission cooler, bed liner, and original spare tire that has not been used. New tires. Mileage: 302,000 kilometers. Color: gray. Engine is in excellent condition. Airbags are in excellent condition. Original body except for a small spray on the fender. Mashallah.