I am going to replace the rear speakers on my 94 chev ext cab long box, and wondering how to remove the plastic interior shell around the rear speakers without breking it. Thanks

 

It is a real pain in the ***. You have to remove the rear seat (after you get the plastic off it is 1 bolt per side). Then remove the trim at bottom of the doors. Remove the plastic panel behind rear seat (all clips). Then pop out clips that hold side panels in starting from the bottom and pulling down and in. You should not have to remove the center piece on the top.