CMF Senior Member
Join Date: Apr 2017
Location: RTP Area, North Carolina
Re: Transmission Issue again
So it did fail hard finally. That's good, it makes diagnosis easier. With my HVAC they never could get a hard fail making diagnosis difficult. GM's Tech Assistance Center wasn't of much help either as they've never seen this before (temp blend roor actuators toggling like crazy after the heater ran for a while plus the HVAC not remembering the fan settings if turned OFF and the car was cut off for a few hours).
Will be curious if it is the same thing again. Out of curiosity did you get an On-Star warning last time? And how did you get it, in the center display or an email?