First off the Sirius has to be activated before it will work. Need to call Sirius and give them some info. Dealer should have done this before you left the lot. If you don't get a signal then something is wrong with either the receiver or the antenna. Again, dealer should have know this before you left the lot. Take it back, make them fix it.ny_armada said:
I have the Sirius SIGMA (Sirius Inside Glass Mount Antenna), which is located inside the windshield just on the passenger side of the rear view mirror. It's not small but it isn't in plain view and hidden by the mirror to the driver. Check out the Titantalk link below, this one is mounted outside. Is this where yowhat yours looks like outside on the glass or on the roof.
http://www.titantalk.com/forums/showthread.php?p=346771#post346771
I did have a problem with the receiver when I first got the truck. No reception whatsoever, couldn't get anything but the ID number to pop up. No reception at all. Dealer had to replace receiver. No problems since then.