An endplay adjustment system and method is shown having a slider body that has a thrust surface that lies in a plane that is generally perpendicular to an axis of an armature and that can be driven toward the armature by a plunger body. After the plunger body is driven into a plunger-receiving area of the housing, an angled surface of the plunger engages a mating surface of a slider body which forces the thrust surface into an end of an armature of an electric motor. The plunger body may then be secured, adhered to or welded to the housing and/or the slider body to lock the slider body and plunger into place, thereby reducing or eliminating endplay associated with the armature shaft.