Remove the trim.

Unbolt the sun visors, dome lamp, grab handles and any other accessories that are attached to the ceiling.

Remove the upper seat belt mounting loops.

Remove and/or pull back just enough of the side interior trim panels to gain access to the edge of the headliner. Complete removal of these panels is usually not needed.

Lower one side of the headliner panel and slide it over to clear the trim panels.

Turn the panel and remove it from the vehicle.