I have a 2001 Chevy burb 1500 with about 95K miles on it. About 3 weeks ago the front passenger window would not roll down from either the driver or passenger control. A couple of days later it worked. Now it doesn't work and hasn't for about a week and a half so I don't expect it to anymore. I haven't taken the door panel off to investigate yet and thought I would see if anyone had a similar experience or suggestion. I haven't taken the door panel off on this vehicle before and I'm hoping not to take it to the dealer in pieces. I tried giving the window "The Fonz" bump with my fist but that didn't work either and no the window lock is not engaged.