2026 GMC Sierra 1500 AT4

1-OWNER -- DURAMAX DIESEL -- 4WD -- AT4 OFF-ROAD PACKAGE -- POWER SUNROOF -- HEATED AND VENTILATED LEATHER -- 15-INCH HEAD-UP DISPLAY -- BOSE AUDIO -- MULTIPRO TAILGATE -- ADAPTIVE CRUISE -- HEATED REAR SEATS & STEERING WHEEL -- GMC PRO SAFETY PKG --

We've just taken in a 2026 GMC Sierra 1500 AT4 Crew Cab Pickup - it's finished in Summit White, with a Jet Black with Kalahari accents perforated leather interior.

With 21,258 miles, this 4WD Sierra is powered by the Duramax 3.0L turbo-diesel I6, delivering 305 horsepower and 495 lb-ft of torque through a 10-speed automatic transmission. It returns an EPA-estimated 22 MPG city and 26 MPG highway.

This truck has had just 1 previous owner, has 0 reported accidents, is in Good condition, and still has remaining factory bumper-to-bumper warranty coverage.

The AT4 is built for the buyer who wants real off-road capability without giving up the comfort and technology of a premium daily driver. Its factory 2-inch lift, off-road suspension with monotube shocks, skid plates, hill descent control, 2-speed AutoTrac transfer case, automatic locking rear differential, and 20-inch wheels wrapped in all-terrain tires give you a planted, confident feel when pavement turns to gravel, mud, snow, or a rough jobsite.

The Duramax brings a deep well of low-end torque, while the integrated trailer brake controller, trailering package, tow/haul mode, and bed-view camera make towing and hauling easier to manage.

Inside, the AT4 feels upscale and purposeful. Heated and ventilated 10-way power front seats keep you comfortable through changing seasons, while heated rear outboard seats make the Crew Cab inviting for passengers. A heated steering wheel, dual-zone climate control, driver memory, and power rear sliding window add everyday convenience. Open the power sunroof and the cabin feels even brighter and more spacious.

Technology is front and center with a crisp 13.4-inch GMC infotainment touchscreen featuring Google built-in, navigation, wireless Apple CarPlay and Android Auto, plus a Bose premium sound system. The 12.3-inch digital driver display and 15-inch head-up display put important information right in your sightline, while the Rear Camera Mirror and surround-view camera system help give you a clearer look around this full-size truck.

Adaptive Cruise Control helps settle long highway drives, and GMC Pro Safety adds Forward Collision Alert, Automatic Emergency Braking, Lane Keep Assist, Lane Departure Warning, and automatic high beams.

Out back, the spray-on bedliner, LED cargo lighting, 120-volt bed outlet, high-clearance steps, and versatile GMC MultiPro Tailgate are ready for tools, gear, and weekend projects. This is the kind of Sierra that can tackle a trail on Saturday and still feel polished on Monday morning.

Contact Huebner Chevrolet Subaru today by call, text, or email, or start your purchase online. We make it easy with upfront pricing, flexible financing options, optional protection plans, and free delivery within 150 miles. A 1-owner Duramax AT4 this well equipped deserves a closer look, so reach out before someone else puts it in their driveway.