| Problems Installing PXH3GM1X with the XM tuner?HELP
well caddy forum i am having a simple problem intalling/connecting these harness and adapter...
i followed the instuctions step by step....
and im having the problem that once the harness is connects my XM options is disable....
PLEASE HELP
so see what im doing wrong
Im using this
PXH3GM1X
For use with the PXDP3 iPod® Interface when Satellite Radio is Installed. Plugs in at the factory radio satellite tuner.
and this one
PXDP3
Make(s): GENERAL MOTORS
Designed for Video, Generation 3, 4, Mini, and Nano iPods®. The PXDP3 has three Modes of operation; Advanced, Manual, and Auxiliary Input. Advanced Mode allows you to use your factory stereo buttons and steering wheel audio controls (if equipped) to directly control your iPod® with the iPod® text displayed on the factory radio. Manual Mode allows you to control your iPod® directly using the click wheel controls. Auxiliary input mode allows an external audio device to play through your factory system. The PXDP3 works with vehicles that have navigation-equipped radios, non-navigation radios, and vehicles equipped with XM satellite radio. At the press of a button, you can switch between iPod, auxiliary input, and XM satellite radio (if equipped).
Applications
• Select 2006-2007 GM 29-bit GMLAN Vehicles
• See link to Detailed Application Guide
Three Modes Operation:
Advanced
Full Control of iPod® through Factory Radio
Displays iPod® text on the Factory Radio Display
Allows Browsing by: Playlist, Artist, Genre, and Album
Manual
Directly Control iPod with Click Wheel Controls
Auxiliary Input
Allows an external Audio Device to play through your Factory Radio
Retains XM Satellite Radio (if equipped)
Retains Digital Sound Quality
Charges iPod® | 
