The first couple times it was a pain...sometimes it's easier to just brace the 'bezel' (previously referred to as the 'sleeve') on the front and then push the 'receptacle' (previously referred to as the 'socket') through from the back...with a bit of force.
Check this out (items 25, 26, and 52):
http://parts.nalleygmc.com/showAssem...&searchString=