This might be one of the scariest moments in history for the first-timer...

I still don't like this procedure, and still have trouble getting them re-mounted!

1. Put a supporting hand on top of the mirror that you're trying to not break...

(SORRY!)
2. grasp the bottom of the mirror with you other hand and just kind of "rock" it outward... it'll pop loose.
(Don't try pulling the TOP outward!)
3.Once it separates, you then slide the mirror upwards to relase the top...
4. Collapse in a chair and take deep breaths!
It actually takes probably less than 3/4 of an inch worth of horizontal movement to loosen the bottom from its mooring position...
Re-install... place the top mounting"peg" into the top mounting hole on the mirror and push downward. Then you simply line up the other two pegs with their mounting holes in the mirror and push inward...
Good Luck and let us know how you make out!
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2010 Blue RT Audio & Convenience model Se-5 transmision. Dealer-added foglights, accent LEDs and extra speakers. Some RTS chrome windshield, front spoiler and top trunk trim, RTS frunklight and frunk liner, Top Trunk liner, Chrome lower air deflector, fendertip LED bulbs and ISCI floorboards added by yours truly...