It appears to be coded into the BCM, and no one has spoken of 'breaking the code' of the BCM.

IF it is in the ECM, (with the commands going to the BCM over the CAN bus), they why haven't Rudy or someone else found it and spoken of it?


No, no way to automatically deploy it using the BCM's output. You could design your own little box but I'm unsure of where you'd get a good indication of speed from without upsetting the applecart that is the stability control system.