Is the window motor running when pressing the switch? I had a weld come undone on the actuator. I would suggest pulling off the door panel, and watch what it is doing? It was a little difficult to diagnose, but then again, my other window was working. So we pulled the door panel on it to see what a perfect working one was doing. After about 10 minutes of watching the broken one, and then the good one, we spotted the broken weld.(Just a dimple) We tack welded it back, good as new now. Saved me some serious bucks.