GMC Sierra 2026 Gasoline mileage: 27 KM (Special request, those who don't know the trims, don't speak from their own opinion) AT4 2026 Automatic transmission Gasoline 4x4 Mileage: 27,000 First owner Additions: Full PPF on the car and tinted windows with insulation. GMC AT4 Specifications __ 8-cylinder 5.3L engine Leather seats Seat cooling 20-inch rims Electric seat control Navigation screen Cruise control Power windows Heads-up display (projector) 10-speed automatic transmission Bluetooth Keyless start Wireless charger Rear camera Front and rear sensors Traction control Steering wheel control Electric folding mirrors 18-inch rims Smart entry Smart start Auto-dimming mirror New GMC Sierra 2026 for sale Automatic transmission Gasoline