Audio Systems: Replacing rear speakers in 06 impala, rear speakers, impala ls

Question
I wanna replace the rear speakers in my 06 impala ls. They have no amplifier hooked up to them. The problem is I dont know how to remove the rear deck to access the speakers. I dont want to damage anything. I just want a safe removal and replacement. Please Help!!

Answer
remove the rear seat ,remove the seat belt behind the seat only,and remove the back side of the rear seat aftr all is out
remove the 3rd brake light if you don't have the spoiler
and remove the rear deck carpet  also xm tunner is there ,IF you want to change for  sirius LOTS OF PEOPLE DOING THAT
good luck