After much searching I thought I might throw this on the forum just in case someone has come across it and may offer some ideas. Coming back from Melbourne earlier in the week my Calais threw a Stability Control Fault and went into what is called Safety mode (nothing fkn safe about it, but that is another story). Managed to limp it to Ultra tune and after a few days being diagnosed they have made zero progress. Codes say that the Throttle body is out of range, but a replacement TB did nothing. They even changed the throttle pedal to see if that was the issue, no go. Only issue we had on the way to Melbourne which may or may not be related was the cruise control randomly shutting off and refusing to reactivate, and when I restarted the car after checking into our hotel in Melbourne it kept stalling for about 3 starts. After that ran great leaving Melbourne after being parked for 3 days and then bang Stab control fault, check engine light and safety mode. Have reached out to Brad who has done all the mods and am waiting to see what he says. Any thoughts or experiences appreciated.