6.6L V8, Sierra 2500HD AT4, Crew Cab Pickup, 10-Speed Auto, 4WD. Thank you for choosing Holiday Buick GMC, this Summit White 2026 GMC Sierra 2500HD AT4 is a great choice! Checkout the following: Transparent Pricing: At $86,206, what you see is what you pay.Customer-First Service: Our award-winning team treats you like family, backed by an excellent customer satisfaction rating.NOTABLE FEATURES AND OPTIONS YOU SHOULD KNOW ABOUT:EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, TRANSMISSION, 10-SPEED Auto, GVWR, 11,350 LBS. (5148 KG), REAR AXLE, 3.42 RATIO, WHEELS, 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS, TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL, SUMMIT WHITE, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED FRONT LEATHER SEAT TRIM, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE, AT4 PREMIUM PLUS PACKAGE, TECHNOLOGY PACKAGE, AT4 PREFERRED PACKAGE, SNOW PLOW PREP/CAMPER PACKAGE, LPO, BLACK BADGING PACKAGE, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMP, GOOSENECK / 5TH WHEEL PREP PACKAGE -- HITCH PLATFORM TO ACCEPT GOOSENECK OR 5TH WHEEL HITCH., EXHAUST BRAKE, SUNROOF, POWER, LPO, OFF-ROAD HIGH CLEARANCE STEPS, LPO, BODY COLOR WHEEL ARCH MOLDINGS, WINTER GRILLE COVER, LAMPS, SMOKED AMBER ROOF MARKER, (LED), LPO, BLACK GMC EMBLEMS, LPO, BLACK SIERRA NAMEPLATES, LICENSE PLATE KIT, FRONT, INCANDESCENT LIGHTING, 3 YEARS SIRIUSXM, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, UNIVERSAL HOME REMOTE, REAR CAMERA MIRRORPreferred Equipment Group 4SBSiriusXM with 360L Trial SubscriptionPower Front Passenger Windows with Express Up/downDeep-Tinted GlassKeyless Open and StartRear Wheelhouse LinersRear Premium Floor Liners with Removable Carpet InsertFront Premium Floor Liners with Removable Carpet InsertPush Button StartRemote Vehicle Starter SystemElectric Rear-Window DefoggerFront Rain-Sensing WipersSpray-On Pickup Bedliner with GMC LogoFloor-Mounted Center ConsoleGloss Black Header Grille and Grille Insert BarsSafety Alert SeatWireless ChargingHeated Driver and Front Outboard Passenger SeatsHeated 2nd Row Outboard Seats120-Volt Bed Mounted Power Outlet120-Volt Instrument Panel Power OutletVentilated Driver and Front Passenger SeatsMan Tilt-Wheel/telescoping Steering Column2-Speed Active Transfer CaseSierra HD Pro SafetyWireless Phone ProjectionProGrade Trailering SystemTrailer Cam Provisions and Trailer Viewing Software2 Charge/data USB Ports Inside Center Console2 USB Ports2 Charge-Only Rear USB PortsUltrasonic Front and Rear Park AssistOnStar Services CapableLED Cargo Area LightingRear Cross Traffic AlertSteering Wheel Audio ControlsTrailer Side Blind Zone AlertBose Premium 7-Speaker Sound SystemUnauthorized Entry Theft-Deterrent SystemHD Surround VisionBed View Camera with Two Trailer Camera ProvisionsX31 Off-Road PackageAT4 Premium Plus Package ($4,035 value)Power SunroofTechnology PackageOff-Road High Clearance StepAT4 Preferred PackagePower Sliding Rear Window with DefoggerLED Smoked Amber Roof Marker LampsUniversal Home RemoteBlack Badging PackageBlack Sierra NameplatesBlack GMC EmblemsSnow Plow Prep/camper Package ($530 value)220-Amp AlternatorSkid PlatesConvenience This intelligent cruise control system maintains a preset following distance behind another vehicle, Autoally braking or accelerating as required.Safety and Security The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision. The vehicle constantly monitors the roadway in front of the vehicle and identifies and tracks pedestrians on an interior display. If the system determines a likely impact, it will Autoally take preventative steps to avoid hitting the pedestrian. The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display. A head-up display projects gauge (speed, RPM, etc.) information onto the inside of the windshield just below the driver's line of sight.Technology and Telematics Apple CarPlay/Android Auto smart device wireless mirroring Mobile devices can wirelessly connect to the internet through the vehicle's private mobile network. At Holiday Buick GMC, we’re here to Serve you! Our staff is 100% dedicated to customer satisfaction and we understand that you need clear, transparent information throughout the car buying process. With our live market pricing philosophy, we offer the right cars at the right price, and the transparency to back it up!