how do you know if the UCS unit (power seats) goes bad?

What is your question?

front driver seat doesnt recline or move forward/backward when adjusting it with the controls on side. but when you fold the seat over it does slide up and then if you put the seat back it slides back to original position. i have checked the switches/ fuses/ but i took it to a shop and they told me it was a power control module?...not sue..cost about $300 to get replace. is this correct? Could it be the UCS unit?