2024 GMC Sierra HD AEV Grande Concept: A massive flatbed truck

• AEV took the 2024 GMC Sierra 2500HD and outfitted it to look like an enormous flatbed pickup truck.
• The Regular Cab model adds steel bumpers, a massive brush guard, off-road lights, and a winch.
• The heavy-duty Sierra is powered by a 6.6-liter Duramax diesel V-8 that breathes through a snorkel air intake.

American Expedition Vehicles (AEV) knows how to make a tough truck even tougher. Take, for example, the 2024 GMC Sierra 2500HD that the company converted for this year’s SEMA show. What started as a regular cab and long-bed model has been outfitted with all sorts of AEV add-ons that turn it into a heavy-duty overland vehicle.

Sierra HD for SEMA

It looks like the Sierra HD Grande concept could pass through a brick wall. This is mostly due to the massive grille guard, an AEV prototype that provides protection for the headlights as well. It features four powerful off-road lights, and underneath is a 12,500-pound ComeUp winch.

This winch is integrated into the steel front bumper which is the same bumper found on the Sierra HD AT4X AEV Edition. Just like that truck, the test vehicle had an AT4X suspension system that included multi-pole dampers and a 1.5-inch lift. Giant BFGoodrich 40-inch all-terrain tires are mounted on Salta XD wheels. If one of these guys goes flat, there’s a full-size spare in the eight-foot aluminum flatbed truck.

To better ensure that the underside of the vehicle does not hit treacherous terrain, the AEV is mounted on stamped steel skid plates. There’s also a custom steel bumper in the back with a 9,500-pound winch. Other accessories include an ARB air compressor and a snorkel air intake, which allows the Duramax diesel engine — a 6.6-liter V-8 with 470 horsepower and 975 pound-feet of torque — to breathe if the truck needs to wade through water.

The Sierra HD Grande concept looks phenomenal. That’s what oversized tires and a large brush guard will do. Its custom paint isn’t something you’ll find on the factory model, and neither are the prototype AEV front fender flares. While the 2024 GMC Sierra 2500HD Regular Cab starts at just over $47,000, the concept’s mix of custom elements makes it priceless.

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Eric Stafford’s addiction to cars began before he could walk, and has fueled his passion for writing news, reviews, and more for Car and driver Since 2016. His ambition while growing up was to become a millionaire with a car collection similar to Jay Leno’s. Apparently getting rich is harder than social media influencers make it out to be, so he eschewed financial success altogether to become an automotive journalist and drive new cars for a living. After earning a degree in journalism from Central Michigan University and working at a daily newspaper, years of spending money mainly on failed project cars and lemon-flavored jalopies finally paid off when Car and driver I hired him. His garage currently includes a 2010 Acura RDX, a ’97 Chevy Camaro Z/28 manual, and a ’90 Honda CRX Si.