Rear Speakers Not Working

I just purchased a '00 GLS and noticed that the rear speakers weren't functioning. I checked the wiring on the 6x9s and they all looked fine. I even took the rear deck out to locate the rear amp, but couldn't find it.
Any ideas where else to look?

[robz02alero]

yeah check the radio and make sure your not faded to the front all the way!!!

lol...if thats it...ill laugh alot

[doubleN0alero]

if you're looking for the factory amp, its on the left side of the trunk behind the carpet mounted to the side...now i'm talking drivers side when i say left

Thanks. The fader was the first thing I checked. I have a feeling it's the rear power amp. I'll let you know what I find.

[jayson_waltz]

make sure the speakers aren't blown out. mine were when i bought it.

[alero168]

except mine blew out when someone crank the volume too high