The GMC Sierra HD is well-established for its capability when it comes to hauling and towing. However, with the right modifications, this heavy-duty pickup can also make for a great custom build. Now, ...

Hennessey Performance Engineering has recently launched a supercharged upgrade package for the GMC Sierra 1500 with the 6.2-liter small block. Pictured at the Texas-based tuner's Pennzoil Proving ...

The most powerful GMC Sierra 1500 from the factory today packs a 6.2-liter V8 that makes 420 hp. That isn't what we would call a slow pickup truck. But the folks at Specialty Vehicle Engineer felt ...

The most powerful GMC Sierra 1500 on sale today can’t do better than 420 horsepower from a small-block V8, and the biggest of the Big Three in Detroit doesn’t plan on supercharging that motor either.

The mainstay of the Hennessey Goliath 700 GMC Sierra Denali is the beefed-up 6.2L powerplant thanks to a Hennessey 2.9L supercharger package, touting a zero-to-60-mph time of 4.3 seconds.

Hennessey’s new “Goliath 650” package is looking to give Chevy and GMC pickup trucks a heck of a lot more horsepower than they came with stock. The new supercharger kit works on all standard 6.2-liter ...

It doesn’t matter if you’re talking about coupes, sedans, SUVs or pickup trucks – horsepower is plentiful these days, with tuners like Hennessey Performance Engineering leading the way with upgrades ...

GMC offers off-road-ready versions of the Sierra 1500 in the form of the AT4 and AT4X, but if that isn't enough capability, Texas-based PaxPower has an aftermarket solution. The PaxPower Jackal ...