{Hardware} Upgrades, Stout Engine Choices, New Trailering Tech & Extra

GMC has unveiled its first-ever Sierra HD AT4X with the requisite factory-installed off-roading {hardware}. As well as, it additionally debuted the Sierra HD Excessive AEV Version, a variant developed in tandem with American Expedition Automobiles (AEV) that provides extra trail-proven {hardware}. The GMC Sierra HD is recent from a big overhaul for 2024, and the AT4X and Excessive AEV Version vans couldn’t have arrived at a greater time.
“GMC’s AT4X trim, which shall be obtainable throughout all the GMC truck lineup, gives prospects extra premium selections relating to ‘do-it-all’ capabilities,” stated Duncan Alfred, International Vice President of Buick-GMC. “AT4X means you may conquer nearly any terrain in full consolation, and with the towing energy to deliver leisure toys alongside for the journey.”
GMC Sierra HD AT4X: Not Afraid To Get Soiled
The AT4X trim for the Sierra HD options comparable content material to the Sierra 1500 AT4X that debuted on the Overland Expo Pacific Northwest occasion. The AT4X moniker features a factory-installed 1.5-inch suspension elevate package, Multimatic DSSV dampers, an electronic-locking rear differential, 35-inch Goodyear Territory tires, sturdier skid plates, bespoke steering knuckles, customized entrance higher and decrease management arms, and full-grain leather-based upholstery with massaging seats in an Obsidian Rush theme.
Furthermore, the Sierra HD AT4X has a typical Off-Highway driving mode that optimizes the brakes, traction management, throttle development, and transmission shift factors that will help you conquer the wild outside.

GMC Sierra HD AEV Version: Brute Luxurious
The GMC Sierra HD AEV Version builds upon the AT4X trim. It has stamped metal entrance and rear bumpers with built-in restoration factors and entrance winch capabilities. Different options embrace metal skid plates for the steering and switch case, new 18-inch Salta wheels, and lots of customized badges and distinctive inside appointments.
“The Sierra HD is a perfect basis for on-road efficiency, off-road functionality, and insane pulling energy,” stated Dave Harriton, AEV CEO. “As with the Sierra 1500 earlier than it, we took AEV’s signature performance-driven method and dedication to element to raise the points that off-road prospects need and demand of their heavy-duty truck.”
Non-obligatory Turbodiesel Propulsion
The 2024 GMC Sierra HD AT4X is obtainable with a typical 6.6-liter gas-fed V8 engine with 401 horsepower and 464 lb-ft. of torque. The non-obligatory powerplant is a 6.6-liter Duramax diesel with 470 horsepower and 975 lb-ft. of torque. Each engines connect with a 10-speed Allison automated.
And whereas a properly-equipped GMC Sierra 2500 HD might tow as much as 22,500 lbs. (36,000 lbs. for the 3500 HD), the AT4X will muster as much as 18,500 lbs., not dangerous for a luxury-oriented off-road truck. To assist with the hauing is GMC’s ProGrade Trailering System. The bundle features a clear trailer view, facet blind zone alert, adaptive cruise management, mattress hitch steering, and as much as 14 obtainable digital camera views.

Posh & Polished
The Sierra AT4X and Excessive AEV Version could look robust on the surface, however the cabin is an entire new world. The luxurious inside is resplendent in full-gran cowhide, Vanta Ash wooden trim, energy massaging seats, and a 12-speaker Bose Premium Collection stereo with Centerpoint encompass sound. Each vans have a 12.3-inch digital instrument cluster, a 13.4-inch infotainment touchscreen, and a 15-inch heads-up show.
2024 GMC Sierra HD AT4X Pricing
The Sierra HD AT4X will arrive at dealerships within the fall of 2023. No phrase but on pricing, however GMC guarantees to disclose all of the associated information nearer to the supposed launch date. We predict a sub-$90k MSRP is within the playing cards for the Sierra HD AT4X, and decrease trim variants might begin at underneath $50,000. It will be cool to see GMC do an Overland Idea for these Sierra HD vans sooner or later, much like what they did for the Canyon in 2021.
Alvin Reyes is an Automoblog characteristic columnist and an professional in sports activities and efficiency automobiles. He studied civil aviation, aeronautics, and accountancy in his youthful years and remains to be very a lot smitten to his former Lancer GSR and Galant SS. He additionally likes fried hen, music, and natural medication.
Pictures & Supply: GMC & AEV.