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- Duramax 6.6L V8 Turbodiesel
- 4WD
- Tow Package
- Leather Seats
- Heated Steering Wheel
- Heated Front and Rear Seats
- Heated/Cooled Ventilated Seats
- Moonroof
- Navigation
- 360 View Back Up Camera
- Dual Zone Automatic Climate Control
- Remote Start
- Keyless Start with Smart Key
- Dual Power Seats
- Premium Audio Package
- Apple CarPlay/Android Auto Capable
This powerful and well-equipped 2020 GMC Sierra 2500HD Denali is a true workhorse, ready to take on any task with its robust Duramax 6.6L V8 Turbodiesel engine and capable 4WD system. Boasting a long list of premium features, this Sierra Denali delivers uncompromising comfort and convenience for both work and play.
Slip into the luxurious leather-appointed seats and experience the unparalleled refinement of this Denali model. Heated and ventilated front seats, along with a heated steering wheel and dual-zone climate control, ensure you and your passengers stay comfortable in any weather. The large moonroof floods the cabin with natural light, creating an airy and open atmosphere.
When it's time to get to work, the Sierra's towing and hauling capabilities shine. The Duramax diesel engine provides exceptional power and torque, while the integrated trailer brake controller and hitch guidance system make towing a breeze. The 360-degree camera and rear-view camera further enhance visibility and maneuverability, whether you're navigating tight job sites or backing up to a trailer.
Connectivity and technology are also well-covered, with the premium GMC Infotainment System featuring navigation, Apple CarPlay, and Android Auto integration. The Bose premium audio system provides a concert-hall listening experience, while the rear-seat entertainment system keeps passengers entertained on long drives.
This 2020 GMC Sierra 2500HD Denali is a true workhorse with a refined, luxurious edge. Its impressive capabilities, thoughtful features, and premium appointments make it an exceptional choice for those who demand the best from their full-size truck.
Is this vehicle just right, or just CLOSE to what you want? We will find the perfect vehicle for you! Every day, we are focused on methods including dealer trades and factory orders to deliver the vehicle YOU want. We charge ZERO standard/added dealer fees, market adjustments, or surprise mandatory add-ons. We work to earn your trust with a friendly and easy experience, give us a shot today!
Used 2020 GMC Sierra 2500HD Truck Crew Cab
- Used
- Diesel
The highlights
- Navigation system
- Entertainment system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Power moonroof
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
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Test drive at home
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Home delivery
We’ll deliver the vehicle you want to your home and help you complete the paperwork.
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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 moonroof
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start: keyfob
- Remote keyless entry
- Speed control
- Sunroof sunshade: manual
- 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
- 2nd row LCD monitors: 2
- A/V remote
- AM/FM radio: SiriusXM
- Entertainment system
- Headphones
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 8.0"
- Rear audio controls
- 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
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel economy fuel type: gasoline
- Fuel tank capacity: 36.0gal.
- Horsepower: 445hp @ 2,800RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 32
- Rear locking differential
- Recommended fuel: Diesel
- Torque: 910 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- 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
- Compression ratio: 16.00 to 1
- Curb weight: 3,515kg (7,749lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine horsepower: 445hp @ 2,800RPM
- Engine torque: 910 lb.-ft. @ 1,600RPM
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,023mm (79.7")
- Exterior length: 6,352mm (250.1")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- Payload: 1,616kg (3,563lbs)
- Rear headroom: 1,013mm (39.9")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Towing capacity: 6,577kg (14,500lbs)
- Turning radius: 8.0m (26.3')
- Wheelbase: 4,037mm (158.9")
- 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
- Exterior parking camera left
- Exterior parking camera rear: HD Surround Vision yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Heads up display
- 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
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
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Crown Mazda is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about usKBB.com Consumer Reviews
- 2.0
Transmission trash
by Jason on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk - 3.0
Infotainment system unreliable!
by Brian C on Friday, June 27, 2025
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another. - 5.0
Fantastic truck
by Jjj on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!
Disclaimer:
See dealer for complete details, dealer is not responsible for pricing errors. Price may exclude certain taxes, doc fee, charges and/or fees. See dealer for details. The value of used vehicles varies with mileage, usage and condition. Book values should be considered estimates only. Some of our used vehicles may be subject to unrepaired safety recalls. Check for a vehicle's unrepaired recalls by VIN at http://vinrcl.safercar.gov/vin/
See dealer for complete details, dealer is not responsible for pricing errors. Price may exclude certain taxes, doc fee, charges and/or fees. See dealer for details. The value of used vehicles varies with mileage, usage and condition. Book values should be considered estimates only. Some of our used vehicles may be subject to unrepaired safety recalls. Check for a vehicle's unrepaired recalls by VIN at http://vinrcl.safercar.gov/vin/


