Speaker installation

I'm having trouble installing my rear speakers. I have a 97 gmc sierra and i dont know how to get the trim off to get to the speaker. Can anyone help me?

there should be 4 screws, and 1 bolt, the screws are the arm rest(2) and 2 behind the little pocket in the bottom, that just slides up out (2 there behind it) and the seatbelt bolt. The rest are just clips that pop in.....