Just put a F700BT into my 2009 Cobalt. I used the "cheap" 2202 Harness - not the expensive GM LAN OS crap. This means nothing other than i lose factory onstar and door/alert chimes.

Everything is in and work - but for some reason I get no sound on Sirius Radio.... i get data and channels - but no sound. FM/AM/etc works fine.

I plugged the sirius antenna to the SCC1 tuner - then the tuner to the Pioneer Bus using the one thick wire provided - then the pioneer bus to to the F700BT using the thick wire provided. Not even channel 184 works - but i can see the text and what not being sent through.

What did I do wrong?

Make sure you didn't plug the cable in backwards. It is color coded and the colors should match.

I do remeber this - on the CD-SB10 there was a black port (for output) and a blue port (for input) - I used the black port and went from there straite to the H/U.

Also - more bad news. No sound from CD either. And now the CD wont eject! WTF!

Sounds like a more serious problem then.