My daughter has a 2009 Corolla. Over the past few days she has noticed a loud squeak or squeal when the driver's side front window is rolled all the way up. At first I thought it might just be debris or dirt and tried the silicone spray in the window channel trick. It seemed to stop for a day or two, but tonight she said that it was worse.
I checked it out myself and it seems that when the window reaches the top, it still tries to roll up for a second and the squeal is coming from inside the door! I also noticed that when it is doing this, the top of the door on the outside flexes a little like the window motor is straining to push the glass through the top of the door.
Is there a limit switch on the window mechanism? Any other suggestions?