remove the winndow garnish. remove the door panel. reach in and find bolt that holds the vent channel and remove. remove the 2or 3 screws on the front part of the bracket holding the wing in place on the forward side of the door. remove channel with vent as a unit and set aside. pull glass out of channel and remove glass. if i remember i had to cock the glass as i pulled it out of the channel. i did two last winter but that was a long time ago.