bcso0416
Member
I just received a notification about my 2020 1500 PCM update (CSN Y40). It says that it's something required in California for the emissions testing and inspections on 2020 model 1500 trucks and that other states may have the same issue. In TN there are no such tests, which may or may not be a good thing. Anyway, I was just wondering what some of our forum professionals think of this update. especially those who live where there are no inspections. I am not having any issues and not sure about having this update preformed as I don't want anything to affect my MPG. Thanks in advance for your thoughts!