I just bought a 2002 Grand Prix, and the power sunroof won't open all the way - at least sometimes: I tested it today, and it opened all the way once. When it won't work right, it opens about half way (the sunshade is already open completely). If I press the button again, it might open just a tad more, perhaps an eighth of an inch or so.
It seemed to work just fine when I test drove the car a few weeks ago.
Any suggestions?
Thank you.