SRWalker

No account yet, but 2020 Silverado with 3.0l Duramax here. Same issue; I noticed the other day that the top shutter on the passenger side was missing. Checked for damage thinking maybe it got knocked loose by an errant bug, but there was no damage to the plastic. I assumed it must have been deleted, and planned to check with the dealership about it. Glad to see that it was probably intentional, though I'm curious why. I am thinking it has to do with the location of the air intake plenum and how much air this thing inhales.