Originally Posted by
spoiler
I reinstalled the factory unit and still hear no sound from the subs.. My friend is a big subwoofer fan, to the point of having custom units built for his SUV, and he reminded me that when I gave him a ride last Summer he had told me that the subs in my car should be adequate for my tastes. I did not even know they existed behind the seats since I had never moved the seats foreword.
Just remove the covers, and take a look at them, pull them out and test them. I bet you will see the surrounds are totally deteriorated. If so, $25 fix. I think there is 3 (maybe 4) 10mm nuts holding them in (after you remove some trim to get the carpet out of the way, maybe a T8 is needed as well?), then the wire connector. Plenty of info on this site on removal and refurb. If they look OK, the amplifier is under the carpet in front of the passenger side footwell, check if anyone has already altered the factory wiring. Also airbag components are there, don't touch those. And don't disconnect any air bag components with battery connected, (don't remove the seats) and don't reconnect the battery until all air bag wiring is reconnected, that should prevent any air bag light issues. Just a warning, you shouldn't have to touch any of it, but I could see someone removing the seat for easier access.