2024 HD 6.6 diesel, SLT, X31. NHT max tow package, SLT premium Pkg., Safety pro camera package. the truck was ordered mid-November, order was accepted late November and built the 2nd week of Jan. I was able to find a dealer who accept using the GMS pricing. I had a 2021 6.6 gas but we purchased a bigger 5th wheel and needed more truck. This truck is a beast and have zero issues so far. I had to purchase a new GMC trailering Camera, so if anybody is looking for one that fits a 20-23 HD or 19-23 1/2 ton I have one .