If you have the no folding seats then I can help:
1) pull up the seat bottom cushion by pulling out on the front end corners.. fell for a plastic clamp oneach side
2) once you remove the bottom, unscrew the 2 screws holding the back cushion at the bottom.
3) pull the back cushion out of its slot ( upwards with a tilt ) and you should then be able to find your way through to the rear deck.