XL 2010 Automatic Gasoline mileage: 300 KM or more 4WD Denali for sale, renewed, some parts need minor fixing. Engine completely overhauled with more than 17,000 including labor about 8 months ago. Engine wiring harness renewed. Front lighting completely changed. Door handles need changing, and the ones behind the driver and passenger need changing. Needs a front interior ceiling light glass. Gear oil and transfer case fluid changed. No remote. The roof needs belts. Apparently, the right side has putty. The car needs minor fixing. American second-grade fuel pump changed. Cooling and heating are not working. The rear trunk opens only from the inside. The steering wheel does not go down or up, it's fixed. The car has had putty since I first bought it, I don't remember when.