GMC Sierra 2020 GMC Sierra 2020 Highest Trim AT4 Mileage: 270 Specifications: Black and beige leather seats Seat heating and cooling Electric seats Cruise control Bed lighting Full steering wheel controls Electric mirrors with folding USB / Type C / 3-pin socket ports Differential lock + light/heavy 4WD / all functional Push start / Push brake 1 key / Remote start / Trunk opening 6-speed transmission Additions: All-terrain tires KMC rims