The T87 from the 2016s I know don't have to be sent off, but I'm pretty sure the T87A that come in the 2017s and newer do.
Quote:
Due to added complexity, the T87A TCM needs to be individually licensed for 4 GM credits for tuning.
Please note, due to increased security, ALL T87A TCMs need to be unlocked via the GM Unlock service before they can be tuned.
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Soruce::
https://www.hptuners.com/forum/showt...son-Supported!
I've looked around the tune file a bunch an quite curious how they are managing to use the Drive Modes as switch for the AFM. I just disabled mine, but would activate it again if I could use the Drive Modes as a switch.