Driver and passenger windows go up very slowly, if at all

[trip_south]

The driver and passenger windows both go down fine but usually when trying to shut the window it starts going up very slowly and then stops after a second or two. Waiting 15-45 seconds allows for another try at shutting the window, usually resulting in the same second or two of movement and then stoppage. I figure the motor/regulator may just be getting tired after 100K miles but I'm not sure what exactly to replace. I see they sell window/regular combination units but I'm not sure if I need both changed out. Is there some thermal regulator that I'm testing every time I try shutting and that might be bad too?

Thanks for any advice!

[Smiliesafari]

I'm guessing that nothing on the regulator has been lubed since the van left the factory. The factory lube gets hard after all these years. A good cleaning and fresh lube would do miracles for the operation of the windows.

[trip_south]

Thanks for the tip, I'll give it a try.

[LaGrasta]

I've replaced both of mine. I spent $20 each, shipped from eBay and they have been working perfect for a few years now. As for replacing them, remove the door panel, drill out the rivets and screw in the new ones, very easy.

My Dad has a Chevy car and I convinced him he could do it too and same result, cheap and easy.