Experience The Diamond Difference. If you're looking for a vehicle that delivers on performance, utility, comfort, or value, this 2021 GMC Sierra 1500 Denali may be just the ticket... Vehicle Highlights: Driver Alert Package IUltrasonic Front and Rear Park AssistRear Cross Traffic AlertLane Change Alert with Side Blind Zone AlertDriver Alert Package II ($1,045 value)Adaptive Cruise ControlIntelliBeam Automatic High Beam On/offFollowing Distance IndicatorForward Collision AlertLane Keep Assist with Lane Departure WarningAutomatic Emergency BrakingFront Pedestrian BrakingPreferred Equipment Group 5SAPower Sliding Rear Window with Rear DefoggerGMC Connected Access CapablePower Front Passenger Windows with Express Up/downPower Rear Windows with Express DownDeep-Tinted GlassKeyless Open and StartPower Door LocksPower Front Windows with Driver Express Up/downRear Wheelhouse LinersColor-Keyed Carpeting Floor CoveringRemote Vehicle Starter SystemChrome Wheel to Wheel Assist StepsElectric Rear-Window DefoggerSpray-On Pickup Bed Liner with Denali LogoCompassFloor-Mounted Center ConsoleAuto-Locking Rear DifferentialSignature Denali GrilleSafety Alert SeatPremium GMC Infotainment System Radio with NavigationHill Descent ControlIntegrated Trailer Brake ControllerHeavy-Duty Air FilterWireless ChargingHeated Driver and Front Outboard Passenger Seating120-Volt Instrument Panel Power OutletAuxiliary External Transmission Oil Cooler12-Volt Rear Auxiliary Power OutletVentilated Driver and Front Passenger Seats170 Amp Alternator2 USB Ports2 USB Ports (1st Row)Electrical Lock Control Steering ColumnManual Tilt-Wheel and Telescoping Steering Column2-Speed Transfer CaseDriver Alert Package IProGrade Trailering SystemOnStar and GMC Connected Services CapableLED Cargo Area LightingUniversal Home RemoteSteering Wheel Audio ControlsRear Dual USB Charging-Only PortsTheft Deterrent System (unauthorized Entry)HD Rear Vision CameraChrome Recovery Hooks4G LTE Wi-Fi Hotspot CapableAdaptive Ride Control SuspensionTrailering 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. Pedestrian impact prevention - An extra step toward safety. Pedestrians don't always stop, look, and listen, but with Pedestrian Impact Prevention, your vehicle is equipped to better see them and avoid them. This system constantly monitors the road ahead to identify and track pedestrians. It projects that image to an interior display screen, AND should an impact become likely, Pedestrian impact prevention takes steps to avoid a collision.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 Other Options/Features EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6, TRANSMISSION, 10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED, GVWR, 7200 LBS. (3266 KG), REAR AXLE, 3.23 RATIO, WHEELS, 22" TRANSIT STEEL WHEELS FOR LPO 22" WHEELS AND TIRES, TIRES, 275/50R22SL ALL-SEASON, BLACKWALL, ONYX BLACK, SEATS, FRONT BUCKET, JET BLACK, FORGE PERFORATED LEATHER SEAT TRIM, AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN, INCLUDES MULTI-TOUCH DISPLAY, AM/FM STEREO, DRIVER ALERT PACKAGE II, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMPS, LPO, 22" (55.9CM) HIGH GLOSS BLACK WHEELS, SUNROOF, POWER, INTELLIBEAM, AUTOMATIC HIGH BEAM ON