Gps/sat says check antenna see dealer for service

[bonnell223]

Hello everyone I just upgraded to a 8.4 vp3 NA. I am trying to get the sxm radio to work but it says check antenna see dealer for service. I purchased a gps antenna for my truck since my truck didn't have one and still get the check antenna message. Plz help!

 

[MADDOG]

Did you have navigation before? Do you have the Sirius transceiver module?