Jacob McWane

I have a 2010 sierra 1500 4x4 with around 190k. Recently while driving from 3rd gear on up, the truck seems to almost stall,rev drop and power loss and all, and then regain power again. I have done a txspeed dod delete and thats about it upgrade wise. My question is, is that transmission problem requiring rebuild, or do I need to tear into the motor and look in there?