You have to take the seat bottom off then unbolt the bottom half of the back. Push down and back really hard to get the seat bottom out. I moved the front seat all the way forward and set facing the rear seat to do this. Then just unbolt the two bolts and slide it out. If it is the Bose system I would seriously consider not replacing them unless you are replacng the whole system. I replaced mine and they sounded worse than the originals. At least test it to see how they sound before putting everything back together. Good luck.