Hopefully this helps.
1) The Door Inserts are held in by plastic rivets. This links tell how to remove the rivets and what screws you need to put them back in
http://www.camaro5.com/forums/showth...t=door+inserts
2) The bezel going around the gauge cluster will just pop off. take a screwdriver and pry it out. (Put screwdriver in a microfiber towel or go to autozone and buy a tool for removing interior pieces)
3) The LS is the only one with the light grey textured interior pieces. The 1LT/1SS have cloth interior. and the 2LT/2SS have dark grey smoth interior.