The GMC brand of General Motors Co. in Detroit today unveiled first 2024 GMC Sierra HD AT4X — featuring the Sierra HD AT4X AEV Edition — a truck designed to enable drivers to go farther while still having the towing capability essential for heavy duty haulers.
The Sierra HD AT4X is meant to bolster GMC’s lineup of off-road trucks, balancing increased off-road capability, smooth on-road handling, while offering the most trailering technology in its class as well as first-class luxury and comfort features.
“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,” says Duncan Aldred, global vice president of 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.”
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.
- Multimatic DSSV dampers.
- 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.
- Unique obsidian rush interior featuring premium appointments like massaging, full-grain leather-wrapped front seats.
The Sierra HD AT4X also includes a new off-road mode. It is designed so that when engaged, it adjusts various vehicle calibrations, such as the anti-lock brakes, traction control and stability control, to provide optimized performance when venturing off-road. Additionally, off-road mode alters throttle progression and transmission shifts to allow for better off-road control and performance.
American Expedition Vehicles (AEV) has been in business for more than 25 years. It has been working to continuously to improve 4WD design by providing the highest quality off-road parts and accessories available.
The available AT4X AEV Edition adds stamped steel bumpers with integrated recovery points and front winch capability which is designed to provide additional driver confidence and protection. It also features heavy duty steel skid plates that help keep vital components such as the steering gear and transfer case protected on the trail. Additional features include unique 18-inch Salta wheels and unique exterior badging and interior cues.
“The Sierra HD is an ideal foundation when it comes to on-road performance, off-road capability and insane pulling power,” says Dave Harriton, founder and CEO of AEV. “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.”
The available AT4X AEV Edition adds stamped steel bumpers with integrated recovery points and front winch capability which is engineered to provide additional driver confidence and protection. It also features heavy duty steel skid plates that help keep vital components such as the steering gear and transfer case protected on the trail. Additional features include unique 18-inch Salta wheels and unique exterior badging and interior cues.
In addition to the standard 6.6L gas engine, the new AT4X offers the turbocharged pulling power of the available 6.6L Duramax turbo-diesel. Enhanced for 2024, it will deliver 470 horsepower and 975 lb.-ft. of torque, offering more power across the entire operating speed range.
Both engines are paired with an Allison 10-speed automatic transmission, which is designed to optimize engine power, torque, and efficiency.
Additionally, there are up to 14 available camera views including hitch view, bed view with zoom, bed hitch guidance, and rear side view with trailer length indicator.
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.
