I am having the same problem…
I am having the same problem with my 2020 Sierra Denali PU. However I have never had the windshield replaced, so it can't be that. New battery will charge and truck runs, as soon as I turn the vehicle off it is dead.
I am having the same problem with my 2020 Sierra Denali PU. However I have never had the windshield replaced, so it can't be that. New battery will charge and truck runs, as soon as I turn the vehicle off it is dead.