I was told yesterday while at the dealerships, the Ford and GMC truck plants were temporarily down, with the Silverado still running for now, with an approximate 15 week wait if ordering right now.
The Ram plant I can't confirm their truck production status. With the above issues posted, it was still the umbrella of COVID, adding to the mix of unsurety.
The Corvette plant had just started back again, with a 18 month wait time. A guy standing there, waiting to receive his, mentioned he had ordered his 2020 Vette, back in November 2019.
FWIW, I'm so on the fence between the 3.0L and 6.2L. The one looming concern with the 3.0L, is the 150k service.