Ok, after a fun filled day under there hood, I finally traced everything down and got all the codes clear. No more ses light.

It is a mechanical ip. Vin number is 1GCGK24F8PE219191.

It's finally out of limp mode, but I'm still getting a problem in first and second gear, like it's going in and out of gear. I can manually shift it from first on up and it doesn't do it. Also it does the same thing going back into first on the down shift.

They're sending me a new transmission tomorrow, but I'm worried I'll have the same issue.