gx470wtm

I'm brand new at this AND just bought an '05 GX. Can someone tell me how to remove the small hitch cover. There are 4 blue tabs behind the bumper. I want to remove the receiver platform that is bolted on the bumper. If I pull out the blue tabs, how do they go back in? I don't want to screw something up getting it apart. Never been on a forum before either. Can you tell? :)