Pre-Owned 2026 GMC Sierra 2500HD AT4X For Sale Fond du Lac, WI

2026 GMC Sierra 2500HD AT4X 4x4 Onyx Black | Lenz Truck CenterThe 2026 GMC Sierra 2500HD AT4X 4x4 Crew Cab represents serious capability built for those who demand performance and refinement in a heavy-duty truck. This black crew cab combines the proven engineering of the Duramax 6.6L V8 Turbodiesel engine with 4WD capability and a 6.75-foot box, delivering the power and space you need for work or adventure.- 4SG PREFERRED EQUIPMENT GROUP- BLACK BADGING PACKAGE- GOOSENECK/ 5TH WHEEL PREP PACKAGE- GOODYEAR WRANGLER TERRITORY MT LT305/70R18 TIRES- 360-DEGREE CAMERA WITH HITCH GUIDANCE AND HITCH VIEW- ADAPTIVE CRUISE CONTROL WITH FORWARD COLLISION ALERT AND AUTOMATIC EMERGENCY BRAKING- HEATED AND COOLED FRONT BUCKET SEATS WITH MASSAGE FUNCTION AND DRIVER MEMORY- DUAL CLIMATE CONTROL ZONES WITH HEATED SECOND ROW SEATS- NAVIGATION SYSTEM WITH APPLE CARPLAY AND ANDROID AUTO INTEGRATION- HEADS-UP DISPLAY WITH VOICE RECOGNITION AND TOUCHSCREEN CONTROLS- POWER DEPLOYABLE RUNNING BOARDS WITH CORNER STEP FOOTWELLS- SPRAY-IN BED LINER WITH POWER SLIDING REAR WINDOW- GOODYEAR WRANGLER TERRITORY MT LT305/70R18 TIRES ON 18-INCH MACHINED ALUMINUM WHEELS- LANE KEEPING ASSIST WITH LANE DEPARTURE WARNING SYSTEM- KEYLESS ACCESS WITH PUSH BUTTON START AND FACTORY REMOTE START- MOONROOF WITH HEATED STEERING WHEEL AND WIRELESS PHONE PROJECTION- BOSE PREMIUM 12-SPEAKER AUDIO SYSTEM WITH SIRIUSXM CAPABILITY- INTEGRATED BRAKE CONTROLLER AND 2-SPEED ACTIVE TRANSFER CASE WITH HILL DESCENT CONTROL- OFF-ROAD SUSPENSION WITH AUTOMATIC HIGH-BEAM HEADLIGHTSThis truck arrives equipped with premium leather appointments throughout, including power-adjustable seats with lumbar support. The cabin features dual-zone automatic temperature control, heated and ventilated front seating, and practical conveniences like wireless charging and multiple USB ports. The bed-mounted 120-volt power outlet and in-vehicle trailering system app make this truck as functional as it is comfortable.Safety technology is comprehensive with ultrasonic front and rear park assist, rear cross traffic alert, automatic emergency braking, and a safety alert seat. The truck's suspension system delivers both on-road comfort and off-road capability through the 2-speed active transfer case and off-road tuned setup.The AT4X badging package includes black GMC emblems and black Sierra nameplates, complemented by gloss black door handles and header grille accents. This visual distinction, combined with the truck's commanding presence, makes a clear statement about capability and style.The 36-month/36,000-mile factory bumper-to-bumper warranty and 60-month/60,000-mile powertrain warranty provide peace of mind. This vehicle has been expertly inspected and prepared, ready to deliver the performance and luxury you expect from GMC.VIEW OUR COMPLETE INVENTORY OF AROUND 800 VEHICLES AT www.LENZTRUCK.com .All of our vehicles are Lenz Certified by passing a rigorous safety inspection by our certified technicians. Each vehicle is prepped cosmetically and mechanically and ready to be delivered! We can ship your truck anywhere in the United States. Contact us to find out why Lenz Truck Center is selling a lot of trucks in a very different way. EXPECT TO BE IMPRESSED! We attempt to ensure every effort is made to assure the accuracy of these ads, however, errors may occur. We will do our best to keep all information current and accurate; however the dealership should be contacted for final pricing and availability. Every feature listed on the Factory window sticker may not be available. All prices are plus any applicable state taxes and service fees. Tax, title, license, service fee, and shipping are extra if/when applicable. May not apply on all transactions, ask Sales Staff for Details.