More info on this subject 7/8/2017
While the HEX code was able to enable the sirius selection on the keypad of the radio controls, and appears to function... I have had two units now that have different issues and effectively I'm still searching for one that works as it should.
The problem I had with the first unit was that there was no sound from the main door speakers, also no sound from SYNC. This MAY have been a bad unit or its the information programmed in to the CD unit itself and how its supposed to operate as possibly seen on the unit below as well.
The second CD unit was that everything functioned except for SYNC audio out the door speakers again, AND there was no volume control on the dash face or the steering wheel. This CD unit was from a vehicle that had the 8" display non sony sound. The HD radio this allegedly was equipped with did not appear in any menu selection either.
The part numbers that were on the units were:
276-0681-69 / BB5T-19C107-BS
276-1056-23 / DB5T-19C107-GC
I'm attempting to return the second and I'll try again with another unit from somewhere. If anyone else can contribute to this list until we find one that works on the PIU that'd be GREAT!
Cheers all!