Hi All - I have been struggling with a sunroof leak, and after checking the normal stuff to no avail (tubes are attached and flowing free), I dropped it off at my local GM dealer for them to look at. They quickly called me back and said my sunroof doesn't appear to be factory. The glass is in two pieces and the buttons don't match what are in the manual....they said. Hmmmm. My sunroof has a small front glass that flips up to vent, then a larger rear glass that slides all the way back. I can open either or, or both at the same time. The controls are in the center of the headliner at the front of the sunroof. Itís a circle with 5 buttons on it (I think). That sound familiar to anyone? I know a picture would be better, but can't get to it right now. I would love to be able to tell them they are incorrect before I go pick it up. Since it is apparently not a warranty item now, they want $500 just to drop the headliner and take a look at it.