LivnWild

That's what i thought as well. I guess I am wondering how I get the dealership to realize this and replace everything?? Thanks for the quick reply

@newdude Can you tell me how you diagnosed the high pressure pump for the p1089. Was it able to be fixed under an extended warranty on some of them? Same symptoms and shavings were found in the fuel filter. Currently at the dealer for the 5th time waiting on GM tech and the engine light to come back. They did replace the rail, sensor, and harness in past visits. I have a 2019 2500 Duramax high country. Thank you. Anything helps!!:)