Hi, I have a 2004 Grand Prix with a head unit that looks like this http://www.mp3car.com/vbulletin/atta...x-interior.jpg with (minus the cassette tape), it is not equipped with the XM radio (monsoon) or whatever. I followed this guide http://www.grandprixforums.net/how-a...-xm-21849.html (How to add a line input jack on 04+ with XM) successfully. The head unit still had all the wires and pins that the one with XM radio equipped had (on the back of the unit). My question is if any knows how to access the XM radio mode on the one I have that isn't equipped? Normally you just push band and change it to XM1 or XM2 but this one doesn't have it.
The Pontiac and XM help lines are closed until 8am tomorrow, and the car is leaving tomorrow morning from Houston to San Antonio. So it would really be good if you know or know anyone who does know to help me before then, if not, I'd still like to know so I can do it later on or help others who need to know too.
Thanks for your time.