[timgco]

This has been a more common issue lately. The XM receivers have a stonger/ weaker margin with some. I have recently done some tests to see what the issues could be... since I cannot get a staight answer from any techs.

I took a teflon coated cooking pan and placed it over the antenna. Onstar, Nav, and XM still work. If I held a 1" steel tube in front or to the side (within 3" of the antenna, I lost XM, but NAV, and Onstar would still work. So with doing these test on a few different trucks including H2's and H3's, some would do loose XM and others would not. The only thing I can tell from this would be to GUESS that the XM receivers have margin for being stronger/ weaker form the factory. BTW- I think most dealers are going to say NO WARRANTY.

Anyone else?