Just went out to do what BombDoc had suggested....the plastic piece is part of the floor ...not the slide! It does not move with the slide. So.... mine has come loose from the floor. Now..how to fix?
2002 GMC Sierra C2500 HD 6.6L Duramax Diesel
2013 Sabre Silhouette 291BHTS
Pat, Michele and 2 old dogs, Shug & Sissy