Sierra 2500 represents the sixth model year of the fourth-gen GMC Sierra HD. Here's everything that's new and different about the 2025 Sierra 2500.

Cummins diesel engines power a lot of heavy-duty pickups, but which specific models come with one? Can you buy the engine on its own to drop into your truck?

The 6.7-liter Cummins diesel has been powering Ram trucks for nearly two decades. One common problem is hydraulic lifter ...