Remove the door trim panel and plastic watershield. Next, take out the screws from the window bottom channel assembly and lower the window glass. Pry the two glass seals from the window opening, then tilt the window glass to detach the regulator arm from the glass channel and slide the glass up and out of the door. Remove the regulator retaining screws and detach the regulator, guiding it out of the opening in the door. Installation is the reverse of removal.