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How do you remove 1999 Buick Century Limited rear deck speakers that apparently are now defective because the bass is now buzzing with distortion in both?

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2009-11-01 16:05:34
2009-11-01 16:05:34
I had the same problem on my 99 Century LTD which has the Concert Sound III sound system. I have replaced the speakers and can offer some help. To replace these speakers, you must remove the entire back seat and take off the rear shelf upholstery, which has the speaker covers/grilles attached to it. This isn't as hard as it sounds, It takes about half an hour, a helper, and some patience. Please DO NOT attempt to pry off the speaker grilles. They are not detachable and they break easily.To remove the seats you will need a flathead screwdriver, some pliers and/or vice grips, and a small "star" screwdriver.1.Start by removing the seat bottom. This is done by pulling on 2 release tabs (little black rings sticking out from under the seat, 1 on each side.) Pull on both of the rings simultaneously to release the seat.2. After removing the bottom you will see 2 brackets protruding from the bottom of the seat back. 2 nuts that are on studs hold the bottom of the seat back to the frame of the seat. After removing the nuts the seat back must be lifted up to unhook it from the slots in the frame. This is best done with an assistant.3.There are three black buttons/rivets that attach the rear shelf upholstery to the seat frame . Take these rivets out using a screwdriver/plier combo, and don't be afraid to get rough. Just get on both sides of that rivet with some pliers and pull it straight out. Save these for reassembly.3. Now, you can remove the upholstery by simply jimmying it out on both sides. The brake light will come with it, and there should be a wire that you can detach by clicking it out of its harness.4. The star tools comes into play to remove the speakers from underneath the decking. I found a small socket wrench with a star bit fit between the angle of the glass and the speaker itself.You're done! Be careful, and you should be fine. The first time me and a friend did this to replace one speaker, it took about 30 minutes to get the seat apart. The second time went a lot faster. Good luck!

I have the same exact problem in my 1999 Buick Regal LS. I know both of theses cars are almost exactly the same thing. I have a Monsoon sound system. I'm not sure if your car has the Concert sound system in it. I have looked all over my car and it seem that you have to remove the seats. So far I have noticed that the seats somehow slide into a bracket on the frame, but there also seems to be a bolt holding them in place. If I look inside my trunk, I can see my speakers and there seems to be a clip on the enclosure they are mounted to. None of that seems to help though unless you are able to get the rear dash off. If anyone else has a solution to this problem, it would be greatly appreciated.

The above directions were SOOOOOOOO helpful. Very accurate and help to make what could have been an all day project into an acceptable 1 hour project. Thank you.

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