2021 GMC Sierra 3500HD Denali Crew Cab 4WD

Certified. 2021 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel Onyx Black Heavy-duty capability meets premium refinement in this 2021 GMC Sierra 3500 Denali 4WD Crew Cab, finished in bold Onyx Black with a Jet Black interior. Built for serious towing and hauling, this truck is powered by the legendary Duramax 6.6L turbo-diesel paired with the Allison 10-speed automatic transmission, delivering the kind of torque and reliability that makes it a top choice for both job sites and long hauls. This Denali stands out with its X31 off-road suspension featuring Rancho shocks, Autotrac 2-speed transfer case, and auto-locking rear differential, giving you confidence whether youre towing, working, or heading off pavement. The integrated trailering package with trailer brake controller and ProGrade Trailering System makes it ideal for towing campers, equipment, or fifth-wheel setups with ease. Inside, the cabin is all about comfort and technology. Youll find heated and ventilated front seats, heated rear outboard seats, a heated leather-wrapped steering wheel, and driver memory settings. The GMC Premium Infotainment system with navigation, Apple CarPlay, Android Auto, Bluetooth, and a Bose premium sound system keeps you connected and entertained wherever the road takes you. Wireless charging, remote start, and keyless open and start add everyday convenience. Safety is just as impressive, with features like forward collision alert, automatic emergency braking, lane departure warning, blind zone alert, rear cross traffic alert, HD surround vision, and a safety alert seat helping you stay aware and protected in all driving conditions. On the exterior, signature Denali styling is paired with functional upgrades like power folding and extending heated trailer mirrors, LED lighting all around, a spray-on bedliner, MultiPro tailgate, and available power steps. The addition of the Denali Ultimate Package brings even more luxury with a power sunroof, rear camera mirror, and a multicolor head-up display. With a commanding presence and serious capability, this Sierra 3500 Denali is a standout choice for truck buyers in markets like the Midwest, where towing strength, winter readiness, and durability matter most. Whether you're hauling, commuting, or heading out on a weekend getaway, this truck is built to handle it all with confidence and style., 10-Speed Automatic, 4WD, Jet Black Leather, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports (First Row), 2 USB Ports Inside Console, 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 2nd Row Heated Outboard Seats, 4G LTE Wi-Fi Hotspot Capable, 6" Rectangular Chromed Tubular Assist Steps, Auto-Dimming Inside Rearview Mirror w/Camera, Automatic Emergency Braking, Bed View Camera w/2 Trailer Camera Provisions, Chrome Recovery Hooks, Compass Located In Instrument Cluster, Deep-Tinted Glass, Denali Ultimate Package, Driver Alert Package I, Driver Alert Package II, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, Following Distance Indicator, Forward Collision Alert, GMC Connected Access Capable, Gooseneck/5th Wheel Prep Package, HD Rear Vision Camera, HD Surround Vision w/2 Trailer View Camera Provisions, Heated Driver & Front Outboard Passenger Seats, Hill Descent Control, Hitch Guidance w/Hitch View, In-Vehicle Trailering System App, Integrated Trailer Brake Controller, IntelliBeam Automatic High Beam On/Off, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, Lane Departure Warning System, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, Multicolor 15" Diagonal Head-Up Display, Navigation System, OnStar & GMC Connected Services Capable, Polished Exhaust Tip, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down

Additional Information

Navigation System,Denali Ultimate Package,Driver Alert Package I,Driver Alert Package II,Gooseneck/5th Wheel Prep Package,Preferred Equipment Group 5SA,Snow Plow Prep/Camper Package,Technology Package,X31 Off-Road 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,12-Volt Rear Auxiliary Power Outlet,120-Volt Bed Mounted Power Outlet,120-Volt Instrument Panel 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,Off-Road Suspension,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,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,Lane Departure Warning System,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,Bumpers: body-color,Front License Plate Kit,Heated door mirrors,IntelliBeam Automatic High Beam On/Off,LED Cargo Area Lighting,Polished Exhaust Tip,Power door mirrors,Power-Retractable Assist Steps,ProGrade Trailering System,Rear step bumper,Rear Wheelhouse Liners,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,Apple CarPlay/Android Auto,Auto-Dimming Inside Rearview Mirror w/Camera,Auto-dimming Rear-View mirror,Automatic Emergency Braking,Bed View Camera w/2 Trailer Camera Provisions,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,Genuine wood console insert,Genuine wood door panel insert,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,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,Trip computer,Ultrasonic Front & Rear Park Assist,Voltmeter,Wireless Charging,Wireless Phone Projection,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,In-Vehicle Trailering System App,Integrated Trailer Brake Controller,Alloy wheels,Wheels: 20" Multi-Dimensional Polished Aluminum,Deep-Tinted Glass,Power Sliding Rear Window w/Defogger,Variably intermittent wipers,Heavy-duty capability meets premium refinement in this 2021 GMC Sierra 3500 Denali 4WD Crew Cab, finished in bold Onyx Black with a Jet Black interior. Built for serious towing and hauling, this truck is powered by the legendary Duramax 6.6L turbo-diesel paired with the Allison 10-speed automatic transmission, delivering the kind of torque and reliability that makes it a top choice for both job sites and long hauls. This Denali stands out with its X31 off-road suspension featuring Rancho shocks, Autotrac 2-speed transfer case, and auto-locking rear differential, giving you confidence whether youre towing, working, or heading off pavement. The integrated trailering package with trailer brake controller and ProGrade Trailering System makes it ideal for towing campers, equipment, or fifth-wheel setups with ease. Inside, the cabin is all about comfort and technology. Youll find heated and ventilated front seats, heated rear outboard seats, a heated leather-wrapped steering wheel, and driver memory settings. The GMC Premium Infotainment system with navigation, Apple CarPlay, Android Auto, Bluetooth, and a Bose premium sound system keeps you connected and entertained wherever the road takes you. Wireless charging, remote start, and keyless open and start add everyday convenience. Safety is just as impressive, with features like forward collision alert, automatic emergency braking, lane departure warning, blind zone alert, rear cross traffic alert, HD surround vision, and a safety alert seat helping you stay aware and protected in all driving conditions. On the exterior, signature Denali styling is paired with functional upgrades like power folding and extending heated trailer mirrors, LED lighting all around, a spray-on bedliner, MultiPro tailgate, and available power steps. The addition of the Denali Ultimate Package brings even more luxury with a power sunroof, rear camera mirror, and a multicolor head-up display. With a commanding presence and serious capability, this Sierra 3500 Denali is a standout choice for truck buyers in markets like the Midwest, where towing strength, winter readiness, and durability matter most. Whether you're hauling, commuting, or heading out on a weekend getaway, this truck is built to handle it all with confidence and style.

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