XL دينالي 2007 Automatic Gasoline mileage: 1 KM 4WD GMC Denali for sale. Mileage 560,000, can be increased. The car has been fully repainted. Chassis and engine are in good condition. Selling to the highest bidder. The GMC needs some work, and there is a dent in the 4WD system, but I use it daily and it's fine.