2024 GMC Sierra 1500 AT4X Off-Road Truck Gets Standard 3.0L Duramax I6 Turbo Diesel
5 Apr 2023, 18:45 UTC · By: Mircea Panait / Rather than a good ol' 6.2-liter small block, the AT4X gets diesel power and two fewer cylinders for the 2024 model year as standard