Here you see 3 motors: on top with thin spindles on both sides: Moving the seat forward and backwards. Below and on right: to move front part of the seat up/down. Below and left: to move rear part of seat up/down. My issue was the front part, which did not want to move down anymore. Note that I am in Australia and this is a RHD driver's seat. Thus, your US driver's seat looks probably like a mirror image of this.