What about Europe and US entertainment system
 

I just ordered a 2016 C7 Z06 US version because in Europe they are months behind on newer models.
There is one issue that concerns me a bit. The entertainment system.
Navigation will not work.
Radio sirius XM will not work.
Onstar is not available so that won't work but no worries for that part.
Maybe other stuff....

I suppose all that has to do with programming.
Is there anybody who can give answers to this?