Fixing an unpredictable 4xe throttle response

[alphawolff]

I've had this throttle response issue a couple of times since doing the 68c recall the first week it was available. It happened tonight, and here's a few data points that might be helpful in figuring this out.
-I'm cheap, and my local Circle K had a 40 cents off deal today so I mostly ran on gas to burn off the old before fueling up with the cheap. Consequently, the engine was warm but I was now in Electric mode to save gas until I got home to charge.
-I slowed down to make a left turn off a highway in relatively heavy traffic. I don't know that I ever came to a complete stop, although I thought I did (this becomes important later).
-When I had a small gap I went for it but it never accelerated past a little above idle. A bit of a pucker factor, and I realized it was doing it again. I mashed the skinny pedal and the engine kicked in. Since I was in 4auto it got up and went- one of the benefits of the platform.
-I experimented by putting it back in Electric mode. At 45 mph or so there was no acceleration. I have my dash set to show what gear the tranny is in, and at that point it was in 4th. The power indicator (right side of the dash) did not seem to change with throttle input.
-A right turn came up so I decelerated but didn't stop. Same deal when I applied the throttle on exit, only this time the tranny was in 2nd gear.
-I was on a rural road with minimal traffic so I played around with it. Long story short, no throttle response so I would mash it into dino juice mode and then reset to to blue state mode.
-Here's the kicker- once I came to a complete stop and the tranny went back to 1st gear, it was fine.

So, is this a transmission problem? I don't have a hypothesis to explain how this is tied to the recall but the first time it happened was the day I picked it up afterwards. The big thing- no check engine light during any of this. @alphawolff ?

it's a software issue that started popping up after the 95b went out a year ago. make sure the bpcm/ahcp/hcp/tcm/pcm are all up to date. other than that it's just... how it is. i get about one in the shop every other week saying something similar, but outside of updates theres nothing we can do

key wording is "i pressed the accelerator, but it didn't go"

seems to happen more often on GC 4xes

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