Not a Chevy - but my Sierra 2500 was in transit when I put down the deposit on it.
I got supplier pricing from my dealer. On top of that, I had a MyGMC rewards voucher for $1k off the purchase of a new vehicle if I took delivery before 9/3, and I took delivery on 9/3.
Combined, I had just shy of 10% off sticker price.
2020 GMC Sierra AT4 2500HD - Dark Sky Metallic
Sold - 2018 GMC Sierra Denali 2500HD - Dark Slate Metallic