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In order to keep this massive engine’s noise under wraps, GMC has improved engine bay insulation and sound reduction, using hydraulic engine mounts, oil pan covers, engine covers, fuel injection rates ...

With the U.S. economy on an upward slope for the last decade, the number of toys for the campground, lake, ocean, desert, off-road park, racetrack, or even airfield nowadays has skyrocketed. And like ...

If you like big trucks, or you tow a heavy load, I have one for you this week you'll love: The 2025 GMC Sierra 2500 Denali Ultimate, one of the biggest, baddest trucks GMC offers. It is an amazing ...

The 2024 GMC Sierra 2500 HD represents the fifth model year of the fourth-generation full-size heavy duty pickup, for which it received a mid-cycle refresh. This refresh follows the 2020 Sierra 2500 ...

GMC’s heavy-duty luxury Sierra pickup resembles a Cadillac that has mated with a Caterpillar Mining Truck. That is, it’s huge, it’s heavy, it’s tall and it has enough off-roading doodads and gadgets ...

The 2011 GMC Sierra Heavy Duty stands up to the toughest truck-centric scrutiny Ñ that of those who actually use their truck as a tool along with their belts. (photo by Gmc) The biggest rivalry in ...

The 2018 GMC Sierra 2500HD All Mountain concept is a concept vehicle featuring tank-like tracks instead of wheels to help it navigate rugged, snow-covered terrain. The one-of-a-kind snow-climbing ...

Even though this heavy-duty truck has some glaring deficiencies, it's still graced with a few knock-out features. Craig brought 15 years of automotive journalism experience to the Cars team. A ...

When you decide it's time to build up a diesel truck into something special, it's time to make a plan. You can do it one piece at a time over a long period, or you can slam your way through the ...