Anyone know why my pull down unit isnt moving up or down? It has plenty of power n i recently replaced the plastic guides

 

If the motor is or was working properly I would think it is one of 3 easy things to check. The easiest is to check the fuse. When my fuse blew out my hatch light went out as well. I changed the fuse then the light and motor worked. Second part to check if the fuse is good would be the relay behind the panel. If the fuse is good, relay is good and you have a known good motor it might be the limit switch on the pull down assy itself.