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Right now, truck makers know that the big growth area is in off-roading. Studies also show that nearly all Heavy-Duty truck owners tow something at some point. It may be a trailer for work, recreational vehicles or a camper. GMC is betting that luxury, performance and the ability to do extreme off-roading will be a winning combination especially in the Heavy-Duty truck arena. That’s why GMC is equipping its 2024 Sierra HD AT4X with enhanced off-road capability and exceptional towing capacity. It is even adding a more extreme off-roading version from AEV.
2024 GMC Sierra HD AT4X
The 2024 GMC Sierra HD is the latest in the GMC truck lineup to receive the upgraded AT4X off-roading package. GMC first upgraded the popular Sierra 1500 with the AT4X trim and also the popular, smaller Canyon AT4X. New for 2024, GMC will have the 2024 GMC Sierra HD AT4X and even add an even more off-road capable Sierra HD AT4X AEV Edition. Both of the Sierra HD AT4X versions will offer the most trailering technology in the HD class.
The centerpiece of the new cabin is an all-new, tablet-style 13.4-inch-diagonal infotainment touchscreen. It is complemented by a 12.3-inch-diagonal configurable driver information center and a 15-inch-diagonal head-up display. Together, they provide drivers incredible levels of personalization.
“GMC’s AT4X trim, which will be available across the entire GMC truck lineup, offers customers more premium choices when it comes to ‘do-it-all’ capabilities,” said Duncan Aldred, global vice president, Buick-GMC. “Each model delivers unique strengths, with the all-new Sierra HD AT4X taking it to the max, giving our customers the most luxurious and most off-road capable HD we've ever offered. AT4X means you can conquer almost any terrain, in complete comfort and with the towing power to bring your recreational toys, gear or camper along for the adventure."
AT4X Means Premium Off-Roading in GMC Luxury
Building on the foundation of the revamped 2024 Sierra HD, which receives fresh design updates, new available premium interiors and an all-new tech-focused layout, the new Sierra HD AT4X’s highlights include:
- Available 18,500-pound max trailering capacity
- Factory-installed 1.5-inch (38mm) suspension lift
- Rear e-locking differential
- 35-inch Goodyear Territory tires
- Specific front upper and lower control arms and specific steering knuckles
- Larger steel transfer case skid plate and front aluminum skid plate
- Premium appointments like massaging, full-grain leather-wrapped front seats
The Sierra HD AT4X also includes a new Off-Road Mode. When engaged, the Off-Road Mode adjusts various vehicle calibrations, such as the anti-lock brakes, traction control and stability control, to provide optimized performance when traveling off-road.
Extreme American Expedition Vehicles Edition
The available AT4X AEV Edition adds upgraded stamped steel bumpers with integrated recovery points and front winch capability. It also features heavy duty steel skid plates that help keep vital components such as the steering gear and transfer case protected out on the trail. Additional features include unique 18-inch wheels and unique exterior badging.
“The Sierra HD is an ideal foundation when it comes to on-road performance, off-road capability and insane pulling power,” said AEV CEO and founder Dave Harriton. “As with the Sierra 1500 before it, we took AEV’s signature performance-driven approach and dedication to detail to elevate the aspects that off-road customers want and demand in their heavy-duty truck. The result is an awesome truck with capability and confidence in all the right spots.”
Heavy Duty Turbo- Diesel Means Incredible Towing
While other truck makers are pulling back on their commitment to diesel, GMC is keeping the options open for drivers. In addition to the standard 6.6L gas engine, the new AT4X offers the turbocharged power of the available 6.6L Duramax Turbo-Diesel. Enhanced for 2024, the turbo diesel will deliver 470 horsepower and 975 lb.-ft. of torque, offering the ability to tow a phenomenal 18,500 pounds.
2024 GMC Sierra HD AT4X Trailering Technology
The new AT4X offers the most trailering assistance technologies in the heavy-duty class as well as the available ProGrade Trailering System.
Buyers can choose a suite of available intelligent assistance technologies designed to help streamline the hitching and towing process. The integrated tools can help enhance customers’ safety and confidence.
Some of the towing features include:
- Enhanced, industry-first Transparent Trailer View for Gooseneck and Fifth Wheel Trailering
- Available Trailer Side Blind Zone Alert
- New, available Adaptive Cruise Control with Trailering
- Up to 14 available camera views including Hitch View, Bed View with Zoom and Bed Hitch Guidance
- Rear Side View with Trailer Length Indicator
2024 GMC Sierra HD AT4X Arriving in the Fall of 2023
The 2024 GMC Sierra HD AT4X and AT4X AEV Edition are expected to arrive at dealerships in the fall of 2023. Pricing will be announced closer to the start of production.
GMC Photo
Mary Conway is a professional automotive journalist and has decades of experience specializing in automotive news analysis. She covered the Detroit Three for more than twenty years for the ABC affiliate, in Detroit. Her affection for the Motor City comes naturally. Her father ran a gas station while Mary was growing up, in Wisconsin.
Follow Mary Conway at @maryconwaymedia and send her car news tips for future stories.
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