Abstract: An integrated gear shift selector switch assembly for an automotive vehicle includes a park position switch and a brake transmission shift interlock switch combined in a unitized housing as an integrated structure. The park position switch has a movable component that moves within the housing between a park and non-park position corresponding to a movement of a gear shift selector lever from a park to at least one non-park position. The brake transmission shift interlock switch also has a movable component supported by the switch housing for movement in to and out of selective locking engagement with the movable component of the park position switch to selectively unlock and lock the gear shift selector lever in the park position.