I recently installed a Kenwood KDC-BT948HD radio and the XM CNP2000UCA w/ the cable in my Trailblazer. I powered everything up and it worked perfectly with the XM Preview channel playing. I finished putting everything back together, and it had stopped working. Now when I turn it on all I get is a screen that says XM at the top and "XM" for the channel. I've tried reflashing the firmware, I checked all the power/ground & cable connections and nothing works.
Anyone have any ideas?