OK. So no solid answer about the Scosche GM2000 that I picked up for $40 at Wallymart...

Now, I need to decide between the Metra Axxess GMRC-02 and the PAC C2R-GM24 to figure out which is better. I've got the Axxess steering wheel control which worked great in my 2000 GTP and is supposed to work with the 2006, but I don't think that it will care one way or another about which wiring harness I use.

Decisions, decisions...