I went with a high volume dealer that advertises its dealer discounts right on line. I also took advantage of the $1,000 rebate for Costco customers. So it was $6k factory discount, $1k Costco member discount, and then about $6500 in dealer discount. The best I could get from other dealers was a $5k dealer discount.
Tomorrow I pick up my new 2020 Silverado LTZ. Sticker is $57,400 and I am paying $43k and change, plus DMV fees. Its about $13,500 off sticker, or almost 24% discount. Seemed like a good buy to me -- good enough to get me to travel a couple hundred miles to pick it up. I had the dealer add a tonneau cover and tint the front windows. Can't wait to drive 'er home!