Parts & Accessories Spare parts Driver seat for Sierra, fits models 2014 to 2018. It is sound with only the noted issue shown in the pictures. It also has a problem with the gears; when you try to move it forward, it only moves on one side, and one of the buttons is broken. I don't know which one, but I think it's the one that raises and lowers it. The repair in Al-Gharabi costs 200. Selling is very easy.