GMC Sierra 2015 Automatic Gasoline mileage: 300 KM or more 4WD GMC Denali, known Denali specifications. Its mileage is clear in the pictures. The body is original. Free from paint. Only one piece is painted. Price negotiable for the serious buyer. The suspension is excellent. The engines are excellent, thank God. I travel with it and it's fine, thank God. The car is priced at 85,000. For the serious buyer, we will not disagree, God willing.