Hi I have an 06 grand prix with no CD Changer or XM option, OnStar is installed (but not subscribed to). The radio is a Delco unit part number 10352018

When I first got the car a few years ago I noticed there is a button that said CD/AUX (but no aux port) but wanted the option of having the aux port for MP3 Players, iphone etc. I looked it up a long time ago and was pointed to the GM12-AUXv2..but never placed the order for it. Well I finally decided to (after 3 years) look again for this option and found the GM12-AUXv2 on ebay for $36 shipped..since it was low I placed the order and got it yesterday.

I have it hooked in now, power is running to the adapter...but after trying both the CDCHANGER jumper position and the XM jumper position on the adapter I still havent had any luck with it

Am I just out of luck with this stock radio? I was tryign to avoid FM modulators (have had a bunch but travel every so often and it gets annoying trying to track down a truley clear station all the time)