Part number for GM Satellite Antenna?

[chuntag95]

I have an OnStar System that I don't use. I would like to put in a Satellite Radio System, but wanted to replace my OnStar Antenna with the Satellite antenna. Has anyone done this or know the part number to get the antenna?

[RichBailey]

I have bought an xm radio module for my pioneer nav/dvd system. I would also like to use the GM xm radio and replace my onstar antenna but was told that it had a proprietary connector. Don't know if this is true or not. If you find out please let me know. In the meantime I have bought a terk xm11 glass mount antenna. I plan on mounting it on the back glass on the driver's side. You have to careful where you place the antenna as it will not work if there is a defroster wire crossing the center of the mount. Looks like it will work though.