Stereo & Electronics - window motor

so my driver side window motor was replaced a little less than a year ago and now all of a sudden a few days ago the window doesn't go up that fast or not at all. why is it going out when its a new one and not the stock ones that are prone to becoming slow.

nobody?

I had that same problem with my passenger window motor. I have replaced it twice. I think the factory wiring to the window motors doesn't provide enough power for the motor to work to its full potential. I do know they have window fix kits for passenger windows for around 30 bucks, and I think the driver side ones are like double that price. But if I were you I would just look into a new window motor with a lifetime warrenty.