To understand this truck, you have to look past the imposing Vader Chrome grille and dive straight into the engineering. This ...

As standard, the Sierra 2500 HD comes with a 6.6-liter gasoline V8, but GMC offers the 6.6-liter Duramax diesel V8 as optional on every trim. The turbo diesel mill delivers 470 horsepower and 975 ...

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Wayne Cunningham reviews cars and writes about automotive technology for CNET's Roadshow. Prior to the automotive beat, he covered spyware, Web building technologies, and computer hardware. He began ...

The GMC Sierra Denali 2500HD is part of a wave of vehicles that would have seemed oxymoronic not all that long ago: the luxurious heavy duty pickup truck. GMC, Ford, Chevrolet, Dodge, and Nissan all ...

What’s 220 pounds to General Motors’ new 6.6-liter Duramax diesel V-8 engine? Not much, based on the minuscule differences between the performances of the 2017 GMC Sierra 2500HD tested here and a ...

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 ...

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 ...

If you're after a three-quarter ton pick-up truck, the GMC Sierra 2500 should be on your 'to consider' list. The GMC Sierra 2500 is up against some pretty tough competition, but still manages to stand ...

After noting that many used pickup trucks have trouble with reliability, Consumer Reports singles out the 2018 GMC Sierra 2500HD as a significant and worthwhile exception in its recent article on the ...

The General Motors pickup strategy is pretty simple; attack the market with two brands where competitors only offer a single choice. As it relates to heavy-duty consumers, we've already seen what they ...