I HAVE 03 G35 COUPE, WITH THE RIGHT SIDE WINDOW IS STUCK IN THE PARTLY CLOSED POSITION.
IS THERE ANYONE OUT THERE WITH THIS PROBLEM OR HAD ANY LIKE THIS?
Sounds like either the window motor went out or the window came out of its guides. I had a similar problem, my problem was the motor went out along with the door locks.
I have had the window motor go out twice and had to replace it. Seems to be a weakness in the model.