trkpro

All of the semi's I have driven for the last 10-12 yrs have all had fumes in the cab during regen. I never did get any answers as to how OSHA could allow this to continue, due to safety concerns.

I've got a 2020 3500HD with the same problem. It stumbles when I'm towing. I took it to a Chevy tech and was told he's seen several of them with this problem. His best guess was that it involved the 10 speed searching when you first touch the throttle when you coast a little and then start to slowly accelerate. It does not do this when I'm using cruise control, only when operating throttle manually. I also have the Anderson hitch, air bags, etc. This is not chucking from the fifth wheel, as a retired driver, I know the difference. This is a computer problem in my opinion. It's similar to the old carbs that used to stumble if the accelerator plunger was worn out. This should not happen to a vehicle run by computer programing. I think Chevy needs to step up and correct this issue!