GMC Sierra 2018 Automatic Gasoline mileage: 122 KM 4WD Peace, mercy, and blessings of God be upon you. Red GMC Sierra Model: 2018 Mileage: 123 Engine: Guaranteed Body: Guaranteed Additions and modifications done cleanly. A car, ماشاء الله تبارك الله (Masha'Allah Tabarak Allah - What God has willed, blessed be His name). Transmission cooler Borla exhaust Hid the bed liner