Hear The 600-HP Hennessey H600 GMC Yukon Denali Ultimate Roar: Video

Texas-based performance tuner Hennessey Performance Engineering recently released a brief video showcasing the 2025 GMC Yukon Denali Ultimate fitted with the Hennessey H600 package. The short clip is just under one-and-a-half minutes long, and captures the upgraded SUV pounding around Hennessey’s test track as it delivers an eye-raising auditory experience thanks to its supercharged exhaust note. As one might expect, the H600 package boosts the Yukon’s V8 by a considerable margin, increasing peak output by about 180 horsepower.

At the heart of Hennessey’s H600 package is a 3.0L supercharger, which is paired with a high-flow intake system, high-flow intercooler, upgraded crankcase ventilation system, chromoly pushrods, and custom-tuned engine software. The sum of these modifications significantly enhances the performance of the factory-spec 6.2L V8 L87 gasoline engine, which, without the supercharger, is rated at 420 horsepower and 460 pound-feet of torque. With the H600 package, output soars to 600 horsepower at 5,500 rpm.

Along with the substantial performance boost, the H600 package also includes a serial-numbered engine plaque and Hennessey exterior badging. A three-year, 36,000-mile limited warranty is included as well, while additional performance enhancements, such as upgraded wheels and brakes, are available as optional extras.

As for the video, it’s rather straightforward, showing the supercharged GMC Yukon Denali Ultimate in motion as it lays into the throttle around Hennessey’s test track in Texas, providing the viewer with some exciting visuals and a lovely internal combustion soundtrack to boot.

Check it right here:

As a reminder, the GMC Yukon Denali Ultimate is the range-topping variant in the Yukon lineup, equipped as standard with premium features like four-corner Air Ride Adaptive suspension, GM’s Super Cruise semi-autonomous driver assistance system, exclusive 24-inch machined aluminum wheels, and distinctive Vader Chrome exterior accents. Inside, the SUV boasts Woodland Mahogany full-grain leather seating and 16-way power front seats with a massage function.

All GMC Yukon variants ride on the GM T1 platform, while vehicle production takes place at the GM Arlington plant in Texas.