I have a 2013 Duramax with 130k miles. We’re in the middle of a 6k mile trip pulling 15.5klb 5er and I’ve started to get a turbocharger engine code (P2599). This first happened 3000 miles ago when...
I should note that the only times I got the turbo codes was towing a gooseneck with my wife’s race truck at about 14,000lbs. That is when I got my edge insight so I could monitor turbo vane position commanded and actual as well as fuel rail pressure commanded and actual. I ended up finding a 2019 2500HD in late 2019 and replaced it before any more codes were thrown.