So it turns out that I have to have this GM Factory Integration Adapter which costs 129 for crutchfield. Is there any other places that I can find it a lot cheaper, or is my best bet to buy it from crutchfield with a HU for 50% off?
http://www.crutchfield.com/S-dSrxPh3tMYm/cgi-bin/prodview.asp?I=142DCGM16
http://www.crutchfield.com/S-dSrxPh3tMYm/cgi-bin/prodview.asp?I=142DCGM16
