This is one of many reasons I left the dealership to drive a truck, if I had the two concerns my WA and SM would only claim one Tsb and I argued until I was blue in the face and got nowhere, now they have no senior master tech at all and no one with diesel certs, life must be tough back with them. They did hire a replacement one of my buddies told me and he had spent over 3 days trying to diag a egr cooler. I just know i am in a better place know.