I have a 2014 Corvette, Z51, Mag Ride and E-Diff. These options are mandatory for PTM. It was working before the recent flash updates.
This morning I made minor changes to the tune then reflashed calibration. And now it won't go into Performance Traction Management mode.
However, after the reflash, it was throwing messages about "Rear Axle" and "Traction Management", and needles where dipping momentarily. I checked the battery and it was fine. I always have it on a charger when its in the garage.
I reflashed using older tunes and older HP Tuners version. But nothing seemed to work.
Is there anything that would block PTM?