I had the exact opposite problem-hot outside windows worked fast, cold outside windows worked slow. Since the truck was still under warranty took it to the stealership for them to charge me $75.00 to grease the window tracks, the next week it got cold and guess what...... took it back to the stealership they replaced my window motors but would not return the $75.00 because "they still needed to be lubed" yea right!! that was the last $$$ they will ever get from me.