mine was loose on the rear pass. door.. i seems to just slide onto the door and then the back part goes into the triagular plastic piece on the door glass are.. i took off the rubber and the tri. plastic piece via the screws inside the car and cleaned it up pretty good(the body part)..then put the rubber back on and then applied a drop of vinyl glue i got a auto zone for about $3.00 a tube and its been on for a year now and no problem... just one drop on the front and that is all it took... the back is jambed in place so it is not going anyplace........