2024 2500hd Duramax. Once i go over 70 mileage goes down some. Silverado 3500 hd is offered as a crew cab with standard bed or long bed and is available in a single rear wheel (srw) or dual rear wheel (drw) configuration.

You might get the first couple of oil changes free. I got 4 with the 2018 lml and 2 with the 2022 3.6 acadia.