They did not fix the issue as they advertised when they came out in 2020. Put a Mishimoto on mine and in was full before 5k miles.Also catch can. I can tell you I have one on the Caprice, WS6 and Malibu. They rarely collect much and so I was not a big believer. It works on the truck!
I did not know they put the 10 speed with the L8T?