Two push tabs in the rear near the rear glass, one metal clip the pushes back inside the rear dome light. Two "slip clips" that connect when the headliner foam is pressed towards the rear glass on install, the metal trim molding that u-channel inserts over the front lip of the sunroof opening, the front dome light area is held by a 3 screw bracket under the rear view mirror, sunvisor screws, and finally the side hand rail screws. That is all the possibilities of a rattle.