A GMC Sierra AT4 owner is trading in his Duramax for a 2025 Ford F-150 Lariat after repeat "Check Engine" failures. From "seats that suck" to coolant valve nightmares, find out why this high-mileage ...

This 2022 GMC Sierra 3500HD Denali 4x4 is a Crew Cab-spec truck rocking a 6.6-liter Duramax turbodiesel V8 engine and $13,920 worth of options. It was purchased new for $83,715 and subsequently sold ...

The J.D. Power 100-Point Score is based on hundreds of thousands of independent and unbiased opinions of verified car owners. Measures the level of defects, malfunctions, and design flaws experienced ...

Since its introduction in 2022, the off-road-focused GMC Sierra 1500 AT4X has exclusively employed GM’s familiar 6.2-liter gasoline V-8. The AT4X model is now getting a welcomed powertrain addition ...

The 2024 GMC Sierra AT4X is getting an upgraded powerplant for the new model year. Where it once solely featured GM’s 6.2-liter V8 truck engine, it’s now set to offer Duramax diesel power as standard.

GM and Bosch have requested that a federal judge drop consolidated litigation which alleges that units of the Chevy Silverado and GMC Sierra were equipped with devices that allowed the pickups to ...