Hello, I’ve been researching this site and love all of the information available. I was curious if anyone ever found out the appropriate extended PID for GM’s Active Fuel Management (AFM) or sometimes called Displacement on Demand (DOD)? Some of the cars that are equipped with this indicate whether the car is in V8 or V4 mode, however mine isn’t one of them. I’d love to be able to tell when the ECM is commanding V4 to turn on.

Thanks.