Just an idea....Is there a max time for Lock-up maybe?

This surge seems common, so I don't think its an issue... but it would be nice to narrow down what causes it.

 

I wanna say tune related. Is the Trans locking and unlocking?

 

no AFM, I was thinking locking/unlocking converter also Choda... not sure how to monitor that though.

 

there is a pid for lock-up in HPT

Its under TCC, use TCC Apply Time

 

All you have to do to fix that is go up on TCC pressure

 

A6 or A8?

 

A8 here, stock tune, steady in v8 or v4 mode, doesn't matter, tach needle bounces up and down

 

Sorry bro...

A8 Issues - Corvette Forum

 

Mine has the same shutter they describe as well as the rpm fluctuation.

I would put a 6speed in my truck in a minute if it was fairly direct swap.

Mine has about 2500 miles.

 

Mine just started something what I would call a shudder, but for a while now around 25-30mph something slams so hard it feels like i hit something in the road. Idk if it is shifting to the next gear or what. I had TSB 15389 done in December for the TCC. I don't think that helped anything. Truck only has 53XX miles on it, Transmission started acting up around 2000 miles. Something is definatly not right with it.