That’s concerning, because that’s the exact issue. The valve cover passages don’t allow proper PCV operation, causing excessive crankcase pressure, which leads to oil consumption.The truck does fall in the range for the TSB… Unfortunately the warranty aged out two years ago and miles out on this trip. I did pull the PCV and its was spotless.
Not sure what valve you’re referring to as EGR; these trucks didn’t get an EGR system until 2021.