2024 GMC Sierra 1500 AT4X gains standard diesel engine

GMC this week announced a handful of updates for its 2024 Sierra 1500 full-size pickup, key among them being the addition of General Motors’ Duramax 3.0-liter turbodiesel inline-6 as the standard powertrain in the AT4X off-roader. The previously standard 6.2-liter V-8 gas engine is now an available option. The diesel engine was updated for the…