This morning I found that my driver side (heated) mirror was shattered during the night. Only the glass part is broken. The power adjust still works fine and the housing isn't damaged. I found plenty of replacement parts on line but not "how to" replace it. I did find a video on how to replace the entire housing by pulling off the interior door panel but looking at GMs parts breakdown I don't believe I need to pull the entire housing out. I THINK the glass could be or should just pop out some how. Anyone done this or seen any videos how to do this?