2023 with the 6.6 Duramax 10 speed auto and a long box! The dealer did a valve body on warranty 10k miles ago and it's been great. Hauled a mini x from California and it did awesome! I have absolutely no complaints about the truck just don't need two diesels at the moment. Maintenance has been done regularly such as oil changes, fuel filter and air filter. Truck is still on warranty until 100k or November of 2027