AT4 2021 Automatic Gasoline mileage: 100 KM 4WD GMC Sierra 2021 AT4 For sale, black GMC Sierra, fully loaded, gear shifter. Mileage 102k, can increase. From bumper to bumper original. Engine and transmission guaranteed. Oil changed regularly with the best type of oil, Amsoil. Lifters and camshafts were changed due to the manufacturing defect (DOD). Additions: It has Bose speakers, upper and lower, better than the original speakers, with the original speakers available. Abu Salouh cat-back and Y-pipe with Tareq Al-Tamimi tuning, with the original cat-back available. It has a new set of tires and a new set of Kuwaiti tires. Exide transmission cooler, 40k BTU. Fender delete kit, with original fenders available. Traction control switch, bed light switch, and mirror lights from vehicle-specific switches. Smootha performance air filter that eliminates the need for replacement; you wash it and reuse it. The middle lifter was changed to a mattress. Original floor mats are available. It has Exide suspension for drifting, short stabilizer, and Exide skid plates, with original suspension, stabilizer, and skid plates available. Spacers are available but not installed.