Certified Pre-Owned 2021 GMC Sierra 3500 HD Truck Crew Cab Denali
- Certified vehicle
- Diesel
The highlights
- Navigation system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
- Front dual zone A/C
We can come to you

Video walkaround
Experience this vehicle via video call and ask us any questions you have.
Schedule a video call

The full specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Navigation system
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start: keyfob
- Remote keyless entry
- Speed control
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 275/65SR20.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 275/65SR20.0E
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- Wheel size: 20"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 8.0"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose
- Speakers: 7
- Steering wheel mounted audio controls
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Genuine wood console insert
- Genuine wood door panel insert
- Heated front seats
- Heated rear seats
- Leather upholstery
- Max seating capacity: 5
- Power 2-way driver lumbar support
- Power 2-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Standard fuel economy fuel type: gasoline
- Variable valve control
- Ground clearance (min): 283mm (11.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Door mirrors: chrome
- Heated door mirrors
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Tailpipe finisher: polished
- Trailer hitch receiver
- Trailer sway control
- Turn signal indicator mirrors
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,049mm (80.7")
- Exterior length: 6,756mm (266.0")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,676mm (66.0")
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Turning radius: 8.7m (28.5')
- Wheelbase: 4,369mm (172.0")
- Appearance: analog
- Auto high-beam headlights
- Blind spot: Lane Change Alert with Side Blind Zone Alert warning
- Compass
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front: HD Surround Vision yes
- Exterior parking camera left: HD Surround Vision yes
- Exterior parking camera rear
- Exterior parking camera right: HD Surround Vision yes
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic front and rear
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Traction control
Notes from the dealer
- 6.6L V8 Duramax Turbodiesel Engine with 445 hp and 910 lb-ft of torque
- 10-Speed Automatic Transmission with 4WD
- Power-Retractable Assist Steps with LED perimeter lighting
- Long Bed with Spray-On Bed Liner and Denali Logo
- Denali Ultimate Package including Technology Package and Power Sunroof
- Gooseneck/5th Wheel Prep Package for serious towing applications
- Trailer Tire Pressure Monitor Sensors with In-Vehicle Trailering App
- HD Surround Vision with Bed View Camera and 2 Trailer Camera Provisions
- Heated and Ventilated Front Seats with 10-Way Power Adjusters
- ProGrade Trailering System with Integrated Trailer Brake Controller
- Premium GMC Infotainment System with Navigation and Apple CarPlay/Android Auto
- Bose Premium 7-Speaker Sound System with SiriusXM 360L
- Signature Denali Grille with High Gloss Black Mesh and Winter Grille Cover
- Advanced Safety Features including Automatic Emergency Braking, Lane Departure Warning, and Rear Cross Traffic Alert
This truck combines heavy-duty durability with premium appointments. The Duramax diesel engine delivers the torque professionals demand, while the long bed provides the cargo capacity you need. The Denali Ultimate Package elevates the interior with heated leather seats, panoramic sunroof, and a sophisticated technology suite. Dual 220-amp primary and 170-amp auxiliary alternators ensure reliable power delivery, and the engine block heater keeps performance consistent in cold weather.
The advanced trailering features make this Sierra ready for your most demanding jobs. The Gooseneck/5th Wheel Prep Package, trailer tire pressure monitoring, and integrated brake controller put you in complete command of your load. The bed-mounted camera system and hitch guidance technology add confidence to every maneuver.
Inside, the technology experience impresses with the 15-inch head-up display, 4G LTE Wi-Fi hotspot capability, and comprehensive driver assistance features. Heated steering wheel, remote vehicle starter, and keyless open and start add convenience throughout the year. The Bose audio system delivers quality sound for your daily drive.
This vehicle is certified by our team as a Triton Certified vehicle, backed by our comprehensive 12-month/12,000-mile warranty and 7-year/100,000-mile powertrain protection. Every inspection point has been verified to ensure you're confident in your investment and the reliability of this truck.
We invite you to schedule a time to view this Sierra 3500HD Denali and experience firsthand the combination of capability, refinement, and technology it offers. Our team is ready to answer your questions and discuss how this truck can serve your needs.
Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. This site, and all information and materials appearing on it, are presented to the user "as is" without warranty of any kind, either express or implied. All vehicles are subject to prior sale. Price does not include applicable tax, title, license, processing and/or documentation fees. ‡Vehicles shown at different locations are not currently in our inventory (Not in Stock) but can be made available to you at our location within a reasonable date from the time of your request, not to exceed one week. Residency restrictions may apply.
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
Optional add-on protection
- GAP Protection
- Lifetime Powertrain
- Tires and Wheels
- Paint Protection
A name you can trust
KBB.com Consumer Reviews
*Tax, tags, title, and $490 Doc fee not included.
Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. This site, and all information and materials appearing on it, are presented to the user "as is" without warranty of any kind, either express or implied. All vehicles are subject to prior sale. Prices include all costs to be paid by a consumer, except for licensing costs, registration fees, and taxes. ‡Vehicles shown at different locations are not currently in our inventory (Not in Stock) but can be made available to you at our location within a reasonable date from the time of your request, not to exceed one week.



