When the car run on some bumps there is a platic craking sound coming from the sunroof. When i press the glass i can hear it. My TL used to do that also, if i put some silicone lub on it , it will stop but only for few days. Acura has a TSB, they put a kind of tape o^pposite side of the rubber that is around the glass. Does infiniti has any TSB for that ?.