Hey guys I have a 2011 Silverado 1500 5.3 and 6l80. I had my truck tuned they tuned the transmission and engine. I had the trans replaced and they put the stock gm time back on and the engine still has the modified tune. I noticed when I really get on it there is a little bit of a shudder from 2nd-3rd. It seems like a pressure issue to me. I plan on taking my truck back to the shop so they can turn the transmission back with the modified tune. Should that fix it?