Does anyone know how to work on the outside mirrors? My left one has come loose and moves around quite a bit. I can see that there is a small screw missing behind the mirror glass but can't really get to anything inside without taking the glass off first. I removed the mirror from the door first. I thought that would present a screw underneath allowing the mirror mechanism to come out of the shell, but there was none. I just can't figure out how it comes apart and I don't want to break anything trying. It is heated, and not self-dimming.

Thanks for you help

If you got a body shop guy you know go there. There are on most mirrors these white plasic clips that hold the mirror in place. most body shops should have them on hand . Sounds like one is broke. They attach to the backside of the mirror then the mirror snaps inplace in the housing. I witnessed a body person do this on my wifes car (a Lumina) when she had hail damage. The mirror was broke and he forgot to put the new one in when we picked up the car. He did it right there in the parking lot. Took him like 2 minutes to do it. I would think most power mirrors would be the same.