A vehicle door checker is provided that includes a housing attachable to a vehicle door, an arm having a first portion attachable to the vehicle, and wherein a second portion of the arm moves through the housing when the door is moved. The door checker also includes at least one slider held within the housing that is in sliding contact with the second portion of the arm inside of the housing. At least one biasing member is held within the housing, the biasing member biasing the slider against the second portion of the arm. A water management dam provides a barrier in the housing such that water is prevented from accumulating within the housing and freezing, wherein such freezing would cause damage to the housing and/or prevent the biasing member and slider from moving.