Major Options / Build: Sunroof/Moonroof, Navigation System, Technology Package, Backup Camera, Blind Spot Monitoring, Parking Sensors, 5th Wheel, Heated Seats, Ultimate Package, Android Auto, CarPlay

Additional Description: Onyx Black 2020 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel DUAL REAR WHEEL, DUALY, Sierra 3500HD Denali, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Onyx Black, Jet Black w/Forge Perforated Leather-Appointed Seat Trim, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 12-Volt Rear Auxiliary Power Outlet, 17" Forged Polished Aluminum Wheels, 2 USB Ports (First Row), 2 USB Ports Inside Console, 2nd Row Dual USB Charge-Only Ports, 2nd Row Heated Outboard Seats, 2-Speed Active Transfer Case, 3.42 Rear Axle Ratio, 4G LTE Wi-Fi Hotspot Capable, 4-Wheel Disc Brakes, 6" Rectangular Chromed Tubular Assist Steps, ABS brakes, Air Conditioning, All-Weather Floor Liners (LPO), Apple CarPlay/Android Auto, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-Dimming Inside Rearview Mirror w/Camera, Automatic Emergency Braking, Automatic temperature control, Bed View Camera, Bose Premium 7 Speaker Sound System, Brake assist, Chrome Recovery Hooks, Compass, Compass Located In Instrument Cluster, Deep-Tinted Glass, Delay-off headlights, Denali Ultimate Package, Driver Alert Package I, Driver Alert Package II, Driver Memory, Dual 220-Amps Primary/170-Amps Aux Alternators, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Electronic Stability Control, Emergency communication system: OnStar and GMC connected services capable, Engine Block Heater, Exhaust Brake, Floor-Mounted Center Console, Following Distance Indicator, Forge Perforated Leather-Appointed Seat Trim, Forward Collision Alert, Front Bucket Seats, Front dual zone A/C, Front fog lights, Front wheel independent suspension, Fully automatic headlights, Garage door transmitter, GMC Connected Access Capable, Gooseneck/5th Wheel Package, Gooseneck/5th Wheel Prep Package, HD Radio, HD Rear Vision Camera, HD Surround Vision w/2 Trailer View Camera Provisions, Heated door mirrors, Heated Driver & Front Outboard Passenger Seats, Heated steering wheel, Heavy-Duty 80 Amp Battery, High Idle Switch, Hitch Guidance w/Hitch View, Hitch Package (LPO), Illuminated entry, Integrated Trailer Brake Controller, IntelliBeam Automatic High Beam On/Off, In-Vehicle Trailering System App, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, LED Cargo Area Lighting, Lockable Console Vault (LPO), Low tire pressure warning, Manual Tilt-Wheel/Telescoping Steering Column, Memory seat, Multicolor 15" Diagonal Head-Up Display, Navigation System, Occupant sensing airbag, OnStar & GMC Connected Services Capable, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Polished Exhaust Tip, Power Door Locks, Power door mirrors, Power driver seat, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power passenger seat, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Defogger, Power steering, Power Sunroof, Power windows, Preferred Equipment Group 5SA, Premium audio system: Premium GMC Infotainment System, ProGrade Trailering System, Radio: AM/FM w/Prem GMC Infotainment System & Navi, Rear Cross Traffic Alert, Rear window defroster, Remote keyless entry, Remote Vehicle Starter System, Safety Alert Seat, Security system, Signature Denali Grille w/High Gloss Black Mesh, SiriusXM w/360L, Speed control, Speed-sensing steering, Split folding rear seat, Spray-On Pickup Bed Liner w/Denali Logo, Steering Wheel Audio Controls, Steering wheel mounted audio controls, Technology Package, Telescoping steering wheel, Tilt steering wheel, Traction control, Trailer Tire Pressure Monitor Sensors, Turn signal indicator mirrors, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Variably intermittent wipers, Ventilated Driver & Front Passenger SNavigation System,Denali Ultimate Package,Driver Alert Package I,Driver Alert Package II,Gooseneck/5th Wheel Package,Gooseneck/5th Wheel Prep Package,Hitch Package (LPO),Preferred Equipment Group 5SA,Technology Package,7 Speakers,AM/FM radio: SiriusXM with 360L,Bose Premium 7 Speaker Sound System,HD Radio,Premium audio system: Premium GMC Infotainment System,Radio: AM/FM w/Prem GMC Infotainment System & Navi,SiriusXM w/360L,Steering Wheel Audio Controls,Air Conditioning,Automatic temperature control,Electric Rear-Window Defogger,Front dual zone A/C,Rear window defroster,120-Volt Bed Mounted Power Outlet,120-Volt Instrument Panel Power Outlet,12-Volt Rear Auxiliary Power Outlet,Driver Memory,Memory seat,Power driver seat,Power Front Passenger Windows w/Express Up/Down,Power Front Windows w/Driver Express Up/Down,Power Rear Windows w/Express Down,Power steering,Power windows,Remote keyless entry,Remote Vehicle Starter System,Steering wheel mounted audio controls,Universal Home Remote,Manual Tilt-Wheel/Telescoping Steering Column,Speed-sensing steering,Traction control,4-Wheel Disc Brakes,ABS brakes,Dual front impact airbags,Dual front side impact airbags,Electrical Lock Control Steering Column,Emergency communication system: OnStar and GMC connected services capable,Front anti-roll bar,Front wheel independent suspension,Keyless Open & Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Door Locks,Power Sunroof,Pickup Bed,Brake assist,Electronic Stability Control,Hill Descent Control,Auto High-beam Headlights,Delay-off headlights,Front fog lights,Fully automatic headlights,Panic alarm,Security system,Unauthorized Entry Theft-Deterrent System,Speed control,2-Speed Active Transfer Case,Dual 220-Amps Primary/170-Amps Aux Alternators,Engine Block Heater,Exhaust Brake,Heavy-Duty 80 Amp Battery,High Idle Switch,6" Rectangular Chromed Tubular Assist Steps,Auto-dimming door mirrors,Bodyside moldings,Bumpers: body-color,Heated door mirrors,IntelliBeam Automatic High Beam On/Off,LED Cargo Area Lighting,Polished Exhaust Tip,Power door mirrors,ProGrade Trailering System,Rear step bumper,Signature Denali Grille w/High Gloss Black Mesh,Spray-On Pickup Bed Liner w/Denali Logo,Turn signal indicator mirrors,Winter Grille Cover,2 USB Ports (First Row),2 USB Ports Inside Console,2nd Row Dual USB Charge-Only Ports,4G LTE Wi-Fi Hotspot Capable,All-Weather Floor Liners (LPO),Apple CarPlay/Android Auto,Auto-Dimming Inside Rearview Mirror w/Camera,Auto-dimming Rear-View mirror,Automatic Emergency Braking,Bed View Camera,Compass,Compass Located In Instrument Cluster,Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Following Distance Indicator,Forward Collision Alert,Front reading lights,Garage door transmitter,GMC Connected Access Capable,HD Rear Vision Camera,HD Surround Vision w/2 Trailer View Camera Provisions,Heated steering wheel,Illuminated entry,Lane Change Alert w/Side Blind Zone Alert,Lockable Console Vault (LPO),Multicolor 15" Diagonal Head-Up Display,OnStar & GMC Connected Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Cross Traffic Alert,Rear reading lights,Rear seat center armrest,Safety Alert Seat,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trailer Tire Pressure Monitor Sensors,Trip computer,Ultrasonic Front & Rear Park Assist,Voltmeter,Wireless Charging,10-Way Power Driver Seat Adjuster w/Lumbar,10-Way Power Passenger Seat Adjuster w/Lumbar,2nd Row Heated Outboard Seats,Forge Perforated Leather-Appointed Seat Trim,Front Bucket Seats,Front Center Armrest,Heated Driver & Front Outboard Passenger Seats,Heated front seats,Heated rear seats,Power passenger seat,Split folding rear seat,Ventilated Driver & Front Passenger Seats,Ventilated front seats,Passenger door bin,Chrome Recovery Hooks,Hitch Guidance w/Hitch View,Integrated Trailer Brake Controller,In-Vehicle Trailering System App,17" Forged Polished Aluminum Wheels,Deep-Tinted Glass,Power Sliding Rear Window w/Defogger,Variably intermittent wipers,3.42 Rear Axle Ratio,DUAL REAR WHEEL,DUALY