i am not sure about the doors on a seville i have an 97 eldo however the rear deck removal is the same in both. you have to remove the rear seat 1st by pushing the buttom cushion towards the trunk that should unhook it from the car then you pull it out. then you remove two bolts that are now exposed to remove the top part of the seat, then youll see two push pins remove them and the rear deck carpet comes out. then pry the speakers out by the clips and there you go.