Experience The Diamond Difference. If you're looking for a vehicle that delivers on performance, utility, comfort, or value, this 2021 GMC Sierra 2500HD Denali may be just the ticket... Vehicle Highlights: Technology PackageInside Rearview Auo-Dimming Rear Camera MirrorMulticolor 15" Diagonal Head-Up DisplayDenali Ultimate Package ($1,770 value)Power SunroofPreferred Equipment Group 5SAPower Sliding Rear Window with DefoggerPower Front Passenger Windows with Express Up/downPower Rear Windows with Express DownDeep-Tinted GlassKeyless Open and StartPower Door LocksPower Windows with Driver Express Up/downRear Wheelhouse LinersRemote Vehicle Starter System6" Rectangular Chromed Tubular Assist StepsElectric Rear-Window DefoggerSpray-On Pickup Box Bed Liner with Denali LogoCompass Located in Instrument ClusterFloor-Mounted Center ConsoleSignature Denali GrilleSafety Alert SeatPremium GMC Infotainment System Radio with NavigationIntegrated Trailer Brake ControllerWireless ChargingHeated Driver and Front Outboard Passenger SeatsHeated 2nd Row Outboard Seats120-Volt Bed Mounted Power Outlet120-Volt Instrument Panel Power Outlet12-Volt Rear Auxiliary Power OutletHeated and Ventilated Front Bucket Seats2 USB Ports2 USB Ports (1st Row)Electrical Lock Control Steering ColumnManual Tilt-Wheel/telescoping Steering Column2-Speed Active Transfer CaseDriver Alert Package IIDriver Alert Package IProGrade Trailering SystemLED Smoked Amber Roof Marker LampsOnStar and GMC Connected Services CapableLED Cargo Area LightingUniversal Home RemoteSteering Wheel Audio Controls2nd Row Dual USB Charge-Only PortsUnauthorized Entry Theft-Deterrent SystemBed View Camera with Two Trailer Camera ProvisionsHD Surround VisionChrome Recovery HooksPolished Exhaust TipWireless Phone ProjectionX31 Off-Road Package Safety and Security Forward collision mitigation - Forward thinking. You look away for just a second and suddenly the vehicle in front of you has stopped. That's when the forward collision mitigation system comes to life. When it senses an impending impact, it will activate a combination of features to help prevent or reduce the severity of an accident. Forward collision mitigation is always looking ahead.Technology and Telematics Smart device mirroring - Smartphone, meet smart car. You can control your device through your vehicle's infotainment system. Smart device mirroring brings together safety and convenience by making it easier to find what you're looking for while keeping your eyes on the road. Android Auto/Apple CarPlay smart device wireless mirroring Apple CarPlay/Android Auto smart device wireless mirroring Mobile hotspot - WiFi on the fly. Connect your devices to the Internet through your vehicles private mobile hotspot and take the internet wherever your journey takes you, without eating up your data allowance. Find the hotspot with mobile hotspot. Other Options/Features PICKUP BED, EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, GVWR, 11,300 LBS. (5126 KG), REAR AXLE, 3.42 RATIO, WHEELS, 20" (50.8 CM) MULTI-DIMENSIONAL POLISHED ALUMINUM, SEATS, FRONT BUCKET, JET BLACK, FORGE PERFORATED LEATHER SEAT TRIM, AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN, DENALI ULTIMATE PACKAGE, TECHNOLOGY PACKAGE, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMPS, GOOSENECK / 5TH WHEEL PREP PACKAGE -- HITCH PLATFORM TO ACCEPT GOOSENECK OR 5TH WHEEL HITCH., EXHAUST BRAKE, SUNROOF, POWER, WINTER GRILLE COVER, LICENSE PLATE KIT, FRONT, MULTI-COLOR 15" DIAGONAL HEAD-UP DISPLAY, REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING WITH FULL CAMERA DISPLAY Why Buy From Diamond Buick GMC? At Diamond Buick GMC of Alexandria, were not just selling cars were building relationships. Since opening our doors, we have kept a firm commitment to our customers. We offer a wide selection of new and used vehicles, and strive to make the car buying process as