GMC Sierra 2011 Automatic Gasoline mileage: 300 KM or more 4WD Peace, mercy, and blessings of God be upon you. Sierra 2011. The body has right side paint and is not free from some putty, and the left rear edge has a simple paint. The mileage is approximately 590, the odometer has been changed. The engine is fine. The gearbox is fine, 6 gears. Dial 4WD. The vehicle has a Corsa muffler (electronic). Heders Al-Hajri custom and any catalytic converter. Gear cooler. The vehicle is programmed.