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    GMC Taking Heavy Duty Pickups To The EXTREME

      The off-road truck segment just enabled adventures to go further, Welcome the GMC elevated heavy duty trucks.

    GMC has announced today the new extreme versions of their Sierra HD truck lineup with the AT4X and Extreme AEV edition trucks.


    These trucks have the following enhancements starting with an off-road capability of 18,500-pound max trailering, offering most trailering tech in class and first-class luxury features.

    The 2024 Sierra HD AT4X give you premium off-roading the GMC way. Building on the revamped foundation of the 2024 Sierra HD, the Sierra HD AT4X highlights are as follows:

    • 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. 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 venturing off-road. Additionally, Off-Road Mode alters throttle progression and transmission shifts to allow for better off-road control and performance.


    The HD AT4X allows you to trailer anywhere, while allowing you to not have to sacrifice the comforts of home.


    If this is not enough for the adventurous you, then move to the 2024 Sierra HD AT4X AEV edition. This edition adds the following features to the AT4X:

    • Robust stamped steel bumpers with integrated recovery points and front winch.
    • Heavy duty steel skid plates covering vital components
    • 18-inch Salta wheels with unique exterior badging and interior cues


    To quote AEV CEO and Founder Dave Harriton:

    “The Sierra HD is an ideal foundation when it comes to on-road performance, off-road capability and insane pulling power, 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.”

    HD Power Train Choices

    • Standard 6.6L gas engine
    • Optional 6.6L Duramax Turbo-Diesel 470 HP / 975 lb-ft of torque
    • 10 speed transmission on either engine choice



    GMC ProGrade Trailering System includes a suite of intelligent assistance technologies that allow you to streamline the hitching and towing process with integrated tools that enhance safety and confidence. This includes industry-first Transparent Trailer View for Goosneck and Fifth wheel trailering, Trailer Side Blind Zone Alert and adaptive Cruise Control with Trailering.

    Interior Luxury and Comfort

    These new HD truck trims levels come with a 13.4-inch-diagonal infortainment touchscreen which is complemented by a 12.3-inch -diagonal configurable driver information center and a 15-inch heads-up display. Sierra HD AT4X offers luxurious premium interior materials with the Obsidian Rush Interior that features power massage front seats, full-grain premium leather and a Vanta Ash Wood Decor complimented by a 12-speaker Bose Premium Series Audio system. The AEV edition includes the AEV logo on the fonrt-seats and a unique AEV-floor liner.


    The 2024 GMC Sierra HD AT4X and AT4X AEV editions will be available at dealerships Fall of 2023. Pricing to be announced at the start of production.


     2024 GMC Sierra AT4X & AT4X AEV Edition Specifications






    User Feedback

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    I loved the AT4X package on this truck, but I honestly see no reason to spend the money for the AEV. It seems like it is just a badge package much like the Harley Davidson of Ford trucks or GMC trucks that is all badging for an expensive cost without any real benefit. 

    I am sure some will love this AEV much like some seem addicted to Harley Davidson badging on everything. I just do not get it nor see any value in it.

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