Welcome to DieselPlaceI have a 2017 Z71 I'm original owner . Truck just went into limp mode giving code P0-2004
I'm at 73,000 miles and its the first injector issue I've have had. Waiting for local service manager to get back to me . I wonder if they resolved this in the 2020 models ??
Check your injector connectors. There have been many issues with the harness and connectors