ishift acting up

My ishift started to act up. Comes with fault code:
Mid 130 psid 25 fmi 7
any ideas what this might be. Symptoms:
Sometimes Check transmission ECU at the next stop msg. Comes up. When this happends transmisdion wont shift down or up. I can still shift to Neutral or reverse or drive after stopping but it wont go nowhere because gas pedal is not responding. When msg. Goes away everything goes back to normal working order. Any ideas

 

Its not in Manual when it does that. Its on D.

 

It got worst. I got back home and after i dropped my trailer had to be towed for about 2 miles to dealership

 

Transmission had full service done week before with all the filters replaced. It started to act up before the service. They replacing Ribbon Harness plus some fly wheels in the top part of the tranny.

 

Same milage 496K its still under warranty until October so i was lucky