GMC Sierra AT4 2022 Automatic Gasoline mileage: 68 KM 4WD GMC Sierra AT4, new shape 2022, mileage 68 thousand. Equipped with: Stage 2 cam Headers Cat-back and Y Filter Programmed Asking price, contact WhatsApp. There is a slight spray in the bed on the left, without modification, without putty, and the rest is guaranteed.