GMC Sierra 2015 Automatic Gasoline mileage: 300 KM or more 4WD Peace be upon you. GMC Sierra, model 2015 (fully loaded). The vehicle is like new from the agency. Third owner since it left the agency. Vehicle mileage is 444. The engine is original, no screws have been touched. The gearbox had its torque converter changed, which is a manufacturing defect in the Sierra. Its manuals and accessories are complete from the agency, including the trunk fire extinguisher and first-aid kit. Renewed and inspected. New tires of excellent quality (Pirelli).