General Motors has been using Duramax diesel engines in certain workhorse models for nearly a quarter century. The 6.6-liter V8 version which powers Chevy Silverado 2500/3500HD and GMC Sierra Heavy ...

When choosing the right truck for you, what's under the hood determines many factors. Horsepower, torque, towing capacity, and fuel economy are just a few of the considerations that differentiate one ...

Last winter, I put a Garrett PowerMax Stage 1 turbocharger on my ’07 truck’s 6.6L Duramax engine. The truck ran great until I slipped my 30-foot toy hauler on the gooseneck. On the first long grade I ...