A GMC Sierra 1500 owner is stunned that his diesel truck delivers a "shockingly good" 23.5 MPG on logging roads, even with ...

From Ram Cummins workhorses to Toyota Hilux legends, these diesel trucks with manual transmissions redefine what it means to ...

Yorch Glez ditched his Chevy Silverado 5.3L V8 for the Silverado 3.0L Duramax and regrets it! He's considering going back. Is the Duramax really a downgrade? What's your take?

After more than two decades working together, General Motors and Allison Transmission are officially splitting up.

Having worked through the data, we may have just found the most reliable diesel engine going into 2026. As it stands, there are five diesel engines on sale in the USA today going into next year, each ...

Next year, heavy-duty GM trucks will lose their Allison badges, even though the transmissions themselves won't change.

After driving the 2025 GMC Sierra 2500 HD Denali Ultimate, here’s my unfiltered take on its luxury cabin, diesel performance and heavy-duty capability. To understand this truck, you have to look past ...

From luxury models to electric giants, discover the top 10 heaviest SUVs ever made, with curb weights exceeding 6,000 lbs.

Break up alert! General Motors is done with Allison Transmission as their contract ends. They'll no longer wear that ...

With four engines and a range of configurations, the 2026 Chevy Silverado 1500 offers competitive tow ratings, and now, GM ...

General Motors is currently investigating reports of an occasional misfire affecting vehicles equipped with the 3.0L I6 LZ0 turbodiesel Duramax engine.