Scott Phelps

What a pain. Has anyone resolved this issue. I have a 2019 GMC 2500 Hd and am getting the P0191 fault code. I have had the dealer replace the fuel rail sensor, the pigtail, and update the computer. I have also replaced the fuel filter and MAP. I am on my third shop and no one can diagnose why my truck continues to go into limp mode without warning. It also turns on the traction light with bthe check engine light. The truck seems to run fine until it doesn't. I am seeing hundreds of people with this same issue on duramax forums and other places with no responses from GM. There is a service bulletin out suggesting replacing the fuel rail sensor and pigtail but I did that and %K miles later it's doing the same thing. Anyone have a fix?????