GMC Sierra AT4 2026 Automatic Gasoline mileage: 4 KM 4WD * Type / GMC Sierra * Category / 5.3L, V8, AT4 * Mileage / 4 thousand * Model / 2026 * Agent / Saudi (Al-Jomaih) * Exterior Color / Black * Body: Sound with no notes * Number of owners: 1 * Additions: Tray + Ladder