My front passenger window will get stuck and not go down. This is not an everyday thing, it will work for a month or so and then it stops going down again. I just pulled the door panel and could not see any issues or loose wires. When I would push the button, I could her the motor trying to operate, but it would not budge. It seems like the rail might be stuck. Any suggestions without having to replace the rail?
Are you able to jostle the window around? Is it loose in its track? I had a window that would operate slowly and eventually stopped, thought the motor was bad, but decided to take a look before ordering any parts. Turns out that the two bolts that hold the glass to the rail were loose, tightening them eliminated slack in the rail and worked wonderfully.