He mistakenly put DEF in his GMC Sierra Duramax and faced a $15,000 dealer bill. See how one local shop saved him a fortune ...

If you’re considering a Chevy or GMC heavy-duty truck with a Duramax diesel, you’ve probably heard impressive claims about ...

What are the best diesel trucks of 2025? Use our expert BuzzScore rating to find the safest or most reliable diesel pickups ...

Large or small, road-legal or not, Detroit has probably built a diesel engine for it, or at least a mill that could be used ...

GMC Hummer EV introduces a variety of updates and changes, including a substantial increase in towing capacity for the 3X ...

GM Authority is taking a closer look at the '25 GMC Hummer EV Pickup payload capacities. How much stuff will the all-electric ...