GMC to Include 3.0L Duramax in Sierra 1500 AT4X: Overland News
The 2024 GMC Sierra AT4X is getting a powerful Duramax upgrade. If you've been eyeing the GMC Sierra AT4X or are a fan of a Turbo-Diesel, we have good news for you. On the 2024 Sierra AT4X, GMC's second-generation 3.0L inline-six Duramax Turbo-Diesel engine will come standard.