Passenger side window

'03 Malibu LS. My passenger side window occasionally gets stuck down. Neither the driver's side or the passenger buttons will get it back up again. I have to wait a minute or two and then the buttons will work again. I took it to the dealer and those @ssh0Ies told me that they couldn't find anything wrong with it (I even had to pay $70 just for them to look at it cause they didn't want to call my extended warranty company). What should I do?