Lease on my 2017 Double Cab Sierra SLE was up in September. Was going to order a 2021 Double Cab Sierra SLT to replace it. Found out they don't make SLT's in the double Cab configuration anymore. Quickly went out and found a 2020 SLT up in Wisconsin, 6 hours away (I am in Chicago) Then there were only 7 SLT double cabs available at the time in the country: 1 Nevada, 1 Iowa, 1 Wisconsin, 1 Minnesota, 2 Michigan, 1 Maryland. It looked like dealerships did not stock these unless someone wanted/ordered one. Couldn't find a AT4 either. Lots of Elevations/SLE's. Glad I found it. Going to have to keep it for awhile. Just like many have commented. Prefer the larger bed. (Hate stuff hanging off the tailgate). 90% of time I am the only one driving it. Rarely did I have anyone sit in the rear seats on my other truck (also easier to grab items off the seat when if front).