My power seat will not move backward.
The power seat motor that moved the seat forward would be the same motor that would run it backwards. The only difference would be the switch would have to make the motor run the opposite way by switching power and ground. If you hear the motor trying to move and makes noise than you may have a stripped gear on the seat track or something has got caught in the track and is binding it. I recommend to have a qualified mechanic check it out, such as one from YourMechanic.
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