The Refreshed 2024 GMC Sierra HD Lineup

2023 GMC Sierra Heavy Duty parked near river

Drivers know that performance speaks louder than promises, and the GMC Sierra lives up to the hype. With a hard-earned reputation for strength and durability, the 2024 Sierra line-up is more capable than ever before. A recent refresh guarantees even more impressive performance, with the 2024 GMC Sierra 2500HD and 3500HD now featuring an enhanced transmission and turbocharged diesel engine, new trim levels, and some exciting style updates – inside and out!

New Heavy-Duty Trims Available

Off-road riders can’t wait to get behind the wheel of the all-new 2024 GMC Sierra HD AT4X, an adventure-ready trim that excels in both the wilderness and the workplace. The AT4X doesn’t sacrifice towing capacity for all-terrain capability, so you’ll enjoy the best of both worlds!

Looking for next-level luxury? The Denali Ultimate trim is another new addition, riding in style with exclusive 20-inch machined aluminum wheels with gloss-black accents, upscale interior elements, advanced tech, and more!

Improved Performance

The Sierra HD comes standard with a gas-powered 6.6-liter V8 engine designed to power ahead of the pack. Harness 401 horsepower and 464 pound-feet of torque, paired with a 10-speed automatic transmission and rear- or four-wheel drive.

New for 2024 is the 6.6-liter Duramax turbocharged diesel V8 engine, boosted to 470 horsepower and 975 pound-feet of torque. This workhorse boasts a max towing capacity of 22,500 pounds, so it’s ready to tackle any task!

Advanced Trailering System

If you’re interested in the 2024 GMC Sierra Heavy Duty model, you are likely planning on towing some heavy cargo. You’re in luck! Both the 2024 GMC Sierra 2500HD and 2024 GMC Sierra 3500HD are outfitted with the most innovative trailering technology in the heavy duty class. Get behind the wheel to check out features like Trailer Sway Control, Hill Start Assist, and Trailer Brake Controller!

Smart Trailer Integration

The 2024 Sierra HD models come equipped with smart trailer integration, allowing drivers to control certain trailer functions directly from the truck’s interactive infotainment system – or even the GMC mobile app. Streamline trailer set-up and tow with ease in your new heavy-duty truck!

ProGrade Trailering System

New features have enhanced this user-friendly system, including alerts if a vehicle enters the trailer’s side blind zone or if the trailer’s weight exceeds the recommended limit. Plus, access up to 14 available camera views including Hitch View, Bed View with Zoom and Bed Hitch Guidance, and Rear Side View with Trailer Length Indicator.

That’s not all! The GMC Sierra HD’s innovative multifunctional tailgate makes its triumphant return, making it simple to configure the tailgate to optimize loading/unloading.

Interior Comfort and Technology

Known for incorporating sophisticated style touches and premium materials, GMC designs its heavy-duty trucks with comfortable cabins. Ample storage space throughout keeps you organized, while the all-new, tablet-style 13.4-inch-diagonal infotainment touchscreen promotes connectivity. Be sure to check out the 12.3-inch-diagonal configurable driver information center as well, with a 15-inch-diagonal head-up display available.