Just a bit of follow up.
If you take a look at:
http://www.bosch-motorsport.de/conte.../html/3826.htm
You will find that the setup is very similar to what's in the ZR1. The ZR1 uses a Bosch modulator (GM part number 25994202), has the sensors as part of the hubs, has the yaw sensor (GM part number 25930324) and pressure sensor.
The full manual is at (with wiring diagrams, CAN bus messages, etc.):
http://www.bosch-motorsport.de/conte..._Manual_en.pdf