Thought someone may be interested in this.
I just installed my xm radio kit on my 2007. The part number is 178011509(gm accessories) available any dealer. Took me 2 hours to install.
You replace the onstar antanae with new one that does both xm and onstar.
Mount xm reciever box and bracket behind glove box.
Remove radio and plug the wires into it.
Call XM and give them you radio I.D. # and thats it!
Is just like it came from the factory with it once installed.
I just installed my xm radio kit on my 2007. The part number is 178011509(gm accessories) available any dealer. Took me 2 hours to install.
You replace the onstar antanae with new one that does both xm and onstar.
Mount xm reciever box and bracket behind glove box.
Remove radio and plug the wires into it.
Call XM and give them you radio I.D. # and thats it!
Is just like it came from the factory with it once installed.