Abstract: A stabilizer for firmly holding a sliding door of an automotive vehicle in a closed position. The stabilizer has a female part adapted to be secured to the “B” pillar of the vehicle and a male part adapted to be secured to the door. The female part has a socket portion to receive a projection on the male part. The socket portion is in the form of a pocket having spaced confronting side walls and a bottom wall. Each side wall has spaced slots extending from the opening of the pocket toward the bottom wall. Ribs of an elastomeric material are bonded in the slots and press against the projection on the male part when the door is closed and the projection enters the pocket.