what'* your trim level? the SSEi has a tweeter in the trianlge piece on the front door.
you need to gently pry the triangle piece from the door if it has the tweeter be very careful of the wires going to it.
then pry the handle bezel off
once that is off take a flat screw driver and stick it between the door panel and the door and gently pry the door panel off (will have to do this all around the door panel except for the top)
once those are popped then slide the panel up and it will come off. all your wires will still be connected to the switches so be careful with them. will get pictures of the back side of the door panel and mirror for you as well.
there are three 10mm nuts that hold the mirror on to the door get those off and unplug the mirror.
now reverse steps to put it back together
2005 Pontiac Bonneville GXP
2008 Chevy Impala 3LT 3.9L (9C3)
2000 SSXP (retired) all over the country in a million pieces