GMC Sierra 2013 Automatic Gasoline mileage: 300 KM or more 4WD Peace, mercy, and blessings of God be upon you. The car, praise be to God, has been with me for a year and a half and does not complain of anything. I changed some new GM parts. The car does not need anything except a tune-up. Other than that, praise be to God, I go back and forth with it. Note: The car has Oksid shocks, full package. From the rear, it has a leaf spring removed and programmed shifters (P electric) (N fast). It has Borla cat-back with a custom Y-pipe from Sport Car. There is a front and rear chassis, the airbags are deployed, and there are dents in the body. The price is 36,000. Selling with modification.