Thanks for your reply. Like a previous poster pointed out, I guess I didn't do enough research. Pretty disappointing though for a high-end unit!
Maybe Pioneer is in cahoots with the the XM folks. Seems odd that all the info is available and displayed with the XM receiver but not the Sirius receiver - even though all the Sirius data is sent to the head unit.
I'm going to pass on the Z series for the other car since Sirius display is crippled. I've been a Sirius subscriber for over 5 years and enjoy their programming so don't plan to change and pay extra for the Sirius channels I liste