Subwoofer Hook Up To Factory Stereo?

[big_country33]

i have a new body style 07 silverado. extended cab. anyway i like the factory stereo because it has the mp3 hook up and satellite radio all ready and i don't want to lose chimes and what not. how do i hook up an amplifier and subwoofer to the factory stereo??

[250motorsportz]

Go to your local car audio store - Future Shop, Circuit City, etc. Ask for a LINE OUT CONVERTER. instructions are pretty simple, just research around for details.