Used 2020 GMCSierra 2500HD Denali
- Diesel
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Odometer
- 82,049 miles
- Body/Seating
- Truck/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT49REY8LF161580
- Stock Number
- AN46044
GMC
Sierra 2500HD
Highlighted Features
- Navigation system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Front dual zone A/C
- Auto high-beam headlights
- Auto-dimming rearview mirror
- Split folding rear seat
- Memory seat
Included Packages & Accessories
- Navigation System
- 7 Speakers
- AM/FM radio: SiriusXM
- Premium audio system: Premium GMC Infotainment System
- Air Conditioning
- Automatic temperature control
- Front dual zone A/C
- Rear window defroster
- Memory seat
- Power driver seat
- Power steering
- Power windows
- Remote keyless entry
- Steering wheel mounted audio controls
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Front anti-roll bar
- Front wheel independent suspension
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Pickup Box
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Speed control
- 220 Amps Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- Auto-dimming door mirrors
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- Power door mirrors
- Rear step bumper
- Turn signal indicator mirrors
- Winter Grille Cover
- 2 USB Ports (1st Row)
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Compass
- Driver door bin
- Driver vanity mirror
- Front reading lights
- Garage door transmitter
- Genuine wood console insert
- Genuine wood door panel insert
- Heated steering wheel
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trip computer
- Voltmeter
- Forge Perforated Leather-Appointed Front Seat Trim
- Front Center Armrest
- Heated front seats
- Heated rear seats
- Power passenger seat
- Split folding rear seat
- Ventilated front seats
- Passenger door bin
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- Alloy wheels
- Wheels: 20" Multi-Dimensional Polished Aluminum
- Variably intermittent wipers
- FREE DELIVERY ANYWHERE IN COLORADO
- 2020 GMC Sierra 2500HD Denali 4WD Crew Cab Duramax 6.6L Turbo-Diesel V8 Engine Allison 10-Speed Automatic Transmission Onyx Black Exterior Jet Black Interior 3.42 Rear Axle Ratio 11350 lb GVWR 20-Inch Polished Aluminum Wheels Denali Ultimate Package Power Sunroof HD Surround Vision Bed View Camera Rear Camera Mirror Multicolor Head-Up Display Chrome Assist Steps Power Fold/Extend Heated Trailer Mirrors with Auto-Dim LED Reflector Headlamps LED Fog Lamps Spray-On Bedliner with Logo LED Cargo Area Lighting Power Rear Sliding Window GMC MultiPro Tailgate Trailering Package Trailer Brake Controller ProGrade Trailering System Auto Locking Rear Differential 2-Speed Autotrac Transfer Case StabiliTrak with Trailer Sway Control and Hill Start Assist Digital Variable Steering Assist All-Terrain Tires 8-Inch Diagonal Touchscreen with Navigation GMC Premium Infotainment System with Apple CarPlay and Android Auto Bose Premium Sound System OnStar with 4G LTE Wi-Fi Hotspot Capability SiriusXM Radio Remote Start Wireless Charging 10-Way Power Front Bucket Seats Heated and Ventilated Front Seats Heated Rear Outboard Seats Driver Seat and Mirror Memory Forward Collision Alert Lane Departure Warning Automatic Emergency Braking Lane Change Alert with Side Blind Zone Alert Rear Cross Traffic Alert Front and Rear Park Assist Total Vehicle Price $77610.00
- Denali Ultimate Package
- Driver Alert Package I
- Driver Alert Package II
- Preferred Equipment Group 5SA
- Technology Package
- X31 Off-Road Package
- Bose Premium 7 Speaker Sound System
- HD Radio
- Radio: Premium GMC Infotainment Sys w/Navigation
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Electric Rear-Window Defogger
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Power Windows w/Driver Express Up/Down
- Remote Vehicle Starter System
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Electrical Lock Control Steering Column
- Keyless Open & Start
- Power Door Locks
- Power Sunroof
- Hill Descent Control
- Unauthorized Entry Theft-Deterrent System
- 2-Speed Active Transfer Case
- 6" Rectangular Chromed Tubular Assist Steps
- IntelliBeam Automatic High Beam On/Off
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- Polished Exhaust Tip
- Rear Wheelhouse Liners
- Signature Denali Grille
- Spray-On Pickup Box Bed Liner w/Denali Logo
- 2 USB Ports
- 2nd Row Dual USB Charge-Only Ports
- 4G LTE Wi-Fi Hotspot Capable
- Automatic Emergency Braking
- Bed View Camera
- Compass Located In Instrument Cluster
- Floor-Mounted Center Console
- Following Distance Indicator
- Forward Collision Alert
- GMC Connected Access Capable
- HD Rear Vision Camera
- HD Surround Vision w/2 Trailer View Camera Provisions
- Lane Change Alert w/Side Blind Zone Alert
- Multicolor 15" Diagonal Head-Up Display
- OnStar & GMC Connected Services Capable
- Rear Camera Mirror
- Rear Cross Traffic Alert
- Ultrasonic Front & Rear Park Assist
- Wireless Charging
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Front Bucket Seats
- Heated & Ventilated Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Heated Driver & Front Outboard Passenger Seats
- Safety Alert Seat
- Chrome Recovery Hooks
- Integrated Trailer Brake Controller
- Deep-Tinted Glass
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Power Sliding Rear Window w/Defogger
Included Packages & Options
- Denali Ultimate Package$2,370
- Technology Package
- Power Sunroof
- Technology Package$1,875
- HD Surround Vision w/2 Trailer View Camera Provisions
- Rear Camera Mirror
- Keyless Open & Start
- Bed View Camera
- Multicolor 15" Diagonal Head-Up Display
Included Options
- 220 Amps Alternator$150
- Engine Block Heater$100
Detailed 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
- 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 economy fuel type: gasoline
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- 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
- 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")
- 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
- 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
Standard Features
- Technology Package
- Power Sunroof
- HD Surround Vision w/2 Trailer View Camera Provisions
- Rear Camera Mirror
- Keyless Open & Start
- Bed View Camera
- Multicolor 15" Diagonal Head-Up Display
- Driver Alert Package I
- Driver Alert Package II
- Safety Alert Seat
- Radio: Premium GMC Infotainment Sys w/Navigation
- Floor-Mounted Center Console
- Compass Located In Instrument Cluster
- Electric Rear-Window Defogger
- Power Door Locks
- Remote Vehicle Starter System
- Keyless Open & Start
- OnStar & GMC Connected Services Capable
- 12-Volt Rear Auxiliary Power Outlet
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 USB Ports
- 2nd Row Dual USB Charge-Only Ports
- HD Rear Vision Camera
- Heated Driver & Front Outboard Passenger Seats
- Heated & Ventilated Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Steering Wheel Audio Controls
- Manual Tilt-Wheel/Telescoping Steering Column
- Electrical Lock Control Steering Column
- Unauthorized Entry Theft-Deterrent System
- Universal Home Remote
- Power Sliding Rear Window w/Defogger
- Power Windows w/Driver Express Up/Down
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Wireless Charging
- Spray-On Pickup Box Bed Liner w/Denali Logo
- 6" Rectangular Chromed Tubular Assist Steps
- Deep-Tinted Glass
- Signature Denali Grille
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Rear Wheelhouse Liners
- Chrome Recovery Hooks
- Polished Exhaust Tip
- X31 Off-Road Package
- Integrated Trailer Brake Controller
- 2-Speed Active Transfer Case
- Forward Collision Alert
- Automatic Emergency Braking
- IntelliBeam Automatic High Beam On/Off
- Following Distance Indicator
- Bose Premium 7 Speaker Sound System
- SiriusXM w/360L
- HD Radio
- 4G LTE Wi-Fi Hotspot Capable
- GMC Connected Access Capable
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Driver Memory
- Ultrasonic Front & Rear Park Assist
- Lane Change Alert w/Side Blind Zone Alert
- Rear Cross Traffic Alert
- Off-Road Suspension
- Hill Descent Control
Dealer Notes
Recent Arrival! CARFAX One-Owner. FREE DELIVERY ANYWHERE IN COLORADO, 2020 GMC Sierra 2500HD Denali 4WD Crew Cab, Duramax 6.6L Turbo-Diesel V8 Engine, Allison 10-Speed Automatic Transmission, Onyx Black Exterior, Jet Black Interior, 3.42 Rear Axle Ratio, 11,350 lb GVWR, 20-Inch Polished Aluminum Wheels, Denali Ultimate Package, Power Sunroof, HD Surround Vision, Bed View Camera, Rear Camera Mirror, Multicolor Head-Up Display, Chrome Assist Steps, Power Fold/Extend Heated Trailer Mirrors with Auto-Dim, LED Reflector Headlamps, LED Fog Lamps, Spray-On Bedliner with Logo, LED Cargo Area Lighting, Power Rear Sliding Window, GMC MultiPro Tailgate, Trailering Package, Trailer Brake Controller, ProGrade Trailering System, Auto Locking Rear Differential, 2-Speed Autotrac Transfer Case, StabiliTrak with Trailer Sway Control and Hill Start Assist, Digital Variable Steering Assist, All-Terrain Tires, 8-Inch Diagonal Touchscreen with Navigation, GMC Premium Infotainment System with Apple CarPlay and Android Auto, Bose Premium Sound System, OnStar with 4G LTE Wi-Fi Hotspot Capability, SiriusXM Radio, Remote Start, Wireless Charging, 10-Way Power Front Bucket Seats, Heated and Ventilated Front Seats, Heated Rear Outboard Seats, Driver Seat and Mirror Memory, Forward Collision Alert, Lane Departure Warning, Automatic Emergency Braking, Lane Change Alert with Side Blind Zone Alert, Rear Cross Traffic Alert, Front and Rear Park Assist, Total Vehicle Price $77,610.00. Onyx Black 2020 GMC Sierra 2500HD Denali 4D Crew Cab Duramax 6.6L V8 Turbodiesel 10-Speed Automatic 4WD
KBB.com Consumer Reviews

Overall3.9Out of 5
- 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!…
Based on 14 consumer ratings for 2020–2026 models. | Privacy
GENERAL: Options, final pricing, photographs, vehicle availability and its specifications are subject to change at any time and without notice to correct errors or as a result of changing market conditions. New vehicles prices reflect current manufacturer's applicable and eligible customer rebates which include manufacturer rebates or offers and manufacturer captive lender down payment assistance. Leases differ in factory incentives. See Mike Maroone Auto for eligibility. Availability of rebates or other incentives, is subject to restrictions including, without limitation, geographic limitations. Please contact Mike Maroone Auto for most up-to-date vehicle pricing, payment, equipment, availability, photographs, eligible customer rebate information and more.
PRICING: Vehicle pricing includes all offers and incentives and dealer's delivery and handling fee of $795. Prices do not include government fees, taxes, finance charges, or transportation costs. Additional taxes apply when choosing 'Free Delivery'. Monthly payment calculator is an estimate only. EPA Estimates Only. All payments and prices are With Approved Credit. While every reasonable effort has been made to ensure display of accurate data, vehicle listings within this website may not always reflect accurate vehicle information.
TEXT OPT-IN: By providing a phone number when requesting more information or filling out a contact form on this web site, you agree to be opted-in to receive text message communications on behalf of our employees and representatives. You may opt-out of these communications at any time.
MERCHANDISING: Every effort is made to produce actual vehicle photos but is not always possible. Please contact a Mike Maroone Auto representative for current images.
No mobile information will be shared with third parties/affiliates for marketing/promotional purposes. All the above categories exclude text messaging originator opt-in data and consent; this information will not be shared with any third parties.
- Maroone Price
- $52,373
- We're here to help: (720) 771-6003
- We're here to help: (720) 771-6003

