Sierra 2500

AT4X

Spider

AWD4WD

8-Cylinder Turbo

Diesel

The 2026 GMC Sierra 2500HD AT4X Crew Cab is finished in Coastal Dune paint and fitted with a 4.5 McGaughy's lift that uses stainless inserts and includes a four-wheel alignment, along with 22 Fuel Rebel D679 black wheels and 37x12.50R20 Nitto Ridge Grappler tires. Professionally installed window tint with a lifetime warranty has also been added. The truck presents the AT4X trim's heavy-duty character with a high-clearance stance and equipment chosen to support serious towing and daily use without adding unnecessary complexity. Inside and out, the Sierra 2500HD AT4X Crew Cab carries the details expected of a heavy-duty GMC built for more than routine commuting. The crew cab body provides the larger passenger area associated with this cab style, while the AT4X trim brings the more capable off-road-oriented equipment set available in the Sierra HD lineup. The exterior treatment is clean and purposeful, with the Coastal Dune finish giving the body a muted earth-tone appearance that pairs well with the black wheel package and the taller tire profile. The added lift changes the truck's proportions in a way that remains consistent with its underlying heavy-duty hardware, and the alignment work helps keep the chassis sorted after the modification. The listed options add practical function to the truck's towing and cold-weather equipment. It includes a front license plate bracket, a winter grille cover, a 3.42 rear axle ratio, a gooseneck / 5th wheel prep package, an exhaust brake, a GVWR of 11,350 lbs., a hitch package, an engine block heater, federal emissions requirements, and a 220 amp alternator. Those items point to a truck prepared for trailer duty and seasonal use, with the drivetrain and support systems specified in a way that suits work, hauling, and longer-distance driving. The exhaust brake and tow-prep hardware are the kind of details that matter when the truck is expected to spend time under load, and the higher-capacity charging system adds another piece of equipment that fits that use. The Sierra 2500HD AT4X Crew Cab is built around the 6.6L Duramax diesel V8 and Allison 10-speed automatic transmission combination that GMC uses in its heavy-duty line, and the rest of the truck's equipment follows that basic formula of torque, durability, and control. The cabin and chassis are intended to handle real payload and trailer demands, while the AT4X trim adds a more specialized layer of hardware than a standard HD model. With the 4.5 suspension lift, the black 22 wheels, and the 37 Nitto tires, the truck carries a distinct visual profile, but the underlying appeal comes from the way the factory towing and duty-focused items remain intact. The result is a Sierra that keeps its heavy-duty purpose at the center, with the listed modifications and options adding specific capability without changing the truck's basic character.----We Know You Will Enjoy Your Lifted Trucks Test Drive Towards Ownership! Lifted Trucks has built an unmatched reputation over the last two decades for customizing and selling thousands of the highest quality used vehicles in the country. Our inventory is nationally sourced by our certified buyers who cherry pick only the best of the best of what is available. These vehicles then go through an 82 point inspection process to guarantee quality and safety. Our lift kits are installed by our own factory-trained technicians, who have thousands of hours of experience. The installation is then inspected by a second dedicated quality control technician, before being sent to our state of the art Hunter Engineering laser alignment rack. Our aftermarket research and development team always matches the best fitting lift kit, shocks, and wheel &amp; tire combinations to each individual vehicle for optimal off-road performance, while maintaining an incredibly smooth ride on the street. We never cut any corners on our builds, which is why we only use top quality name brand products when buildi&gt;

Used 2026 GMC Sierra 2500 AT4X

Used 2026 GMC Sierra 2500 AT4X Mckinney TX 75070

Lifted Trucks McKinney

Gooseneck/5th Wheel Prep Package

LPO, Hitch Package

Get AutoCheck Vehicle History

Kelley Blue Book℠ Instant Cash Offer

Credit Report

Good drivers save more

Some vehicles may be subject to manufacturer safety recalls. See if there are any open safety recalls for this vehicle. This does not include non-safety recalls. Recently announced safety recalls may not yet be posted and there may be a delay between the time a repair is made and before it is reported or posted to the website. Before purchasing, be sure to ask the seller for an up-to-date status on any recalls.

No recall found based on AutoCheck report.

Automatic

 for sale near you in Mckinney, TX. Get more information and car pricing for this vehicle on Autotrader.

Used 2026 GMC Sierra 2500 AT4X for sale in Mckinney, TX 75070: Truck Details - 784696012 - Autotrader

Helpful Links

Car Research & News

Car Buying Tools

Used 2026 GMC Sierra 2500 AT4X AWD/4WD

w/ Gooseneck/5th Wheel Prep Package

Get to know this GMC Sierra 2500

Specs

Highlights

Interior

Safety

Technology

Build Your Offer

My Wallet

Listing Price	$106,689
Dealer Fees Included