I've got a 1999 cavalier z24 convertible and i'm having some serious problems with the power window regulator on the driver's side. I purchased a brandy-spankin new window regulator (with motor) and somehow i'm having the same problems. At first it seemed that once in awhile the window didn't want to roll back up when it was raining. Now it doesn't matter what the weather is like and its happening a lot more frequently. To get it to work again, i have to beat on the motor relatively hard. I can't understand how it could be the motor since its brand new... this is driving me absolutely crazy. My husband suggested converting it to manual windows but i don't know if i can even do that with a convertible? did some convertibles come with manual regulators?? would i be able to get away with using a regular coup manual regulator? I know the convertible doors are longer but they're so expensive 
