Experience the D'Arcy difference!
Onyx Black 2021 GMC Sierra 2500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel
10-Speed Automatic, 4WD, Black Leather.
Recent Arrival!
This vehicle comes equipped with Denali Ultimate Package (Power Sunroof), Driver Alert Package I (Lane Change Alert w/Side Blind Zone Alert, Rear Cross Traffic Alert, and Ultrasonic Front & Rear Park Assist), Driver Alert Package II (Automatic Emergency Braking, Following Distance Indicator, Forward Collision Alert, IntelliBeam Automatic High Beam On/Off, and Lane Departure Warning System), Gooseneck/5th Wheel Prep Package, Preferred Equipment Group 5SA (12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports, 2 USB Ports (1st Row), 2-Speed Active Transfer Case, 2nd Row Dual USB Charge-Only Ports, 4G LTE Wi-Fi Hotspot Capable, 6" Rectangular Chromed Tubular Assist Steps, Bed View Camera w/2 Trailer Camera Provisions, Chrome Recovery Hooks, Compass Located In Instrument Cluster, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, GMC Connected Access Capable, HD Surround Vision, Heated & Ventilated Front Bucket Seats, Heated 2nd Row Outboard Seats, Heated Driver & Front Outboard Passenger Seats, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, LED Smoked Amber Roof Marker Lamps, Manual Tilt-Wheel/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Polished Exhaust Tip, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Defogger, Power Windows w/Driver Express Up/Down, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, Signature Denali Grille, Spray-On Pickup Box Bed Liner w/Denali Logo, Steering Wheel Audio Controls, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Wireless Charging, and Wireless Phone Projection), Technology Package (Inside Rearview Auto-Dimming Rear Camera Mirror and Multicolor 15" Diagonal Head-Up Display), X31 Off-Road Package (Hill Descent Control), 10-Speed Automatic, 4WD, Black Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 220 Amps Alternator, 3.42 Axle Ratio, 3.73 Rear Axle Ratio, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic temperature control, Black Front & Rear Molded Splash Guards (LPO), Bose Premium 7 Speaker Sound System, Brake assist, Bumpers: body-color, Compass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Exterior Parking Camera Rear, Forge Perforated Leather-Appointed Front Seat Trim, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front Prem Floor Liners w/Removable Carpet Insert, Front reading lights, Front wheel independent suspension, Fully automatic headlights, Garage door transmitter, Genuine wood console insert, Genuine wood door panel insert, HD Radio, Heated door mirrors, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp Battery, High Idle Switch, Hitch Guidance w/Hitch View, Illuminated entry, In-Vehicle Trailering System App, Low tire pressure warning, Memory seat, Navigation System, Occupant sensing airbag, Off-Road Suspension, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Pickup Box, Power door mirrors, Power driver seat, Power passenger seat, Power Retractable Assist Steps, Power steering, Power windows, Premium au
Used 2021 GMCSierra 2500 HD Denali
- Diesel
- Exterior Color
- Onyx Black
- Interior Color
- Black
- Odometer
- 54,452 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT19REY0MF168446
- Stock Number
- XP642
Highlighted Features
- 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
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Included Packages & Accessories
- 3.73 Rear Axle Ratio
- 3.42 Axle Ratio
- Wheels: 20" Multi-Dimensional Polished Aluminum
- Forge Perforated Leather-Appointed Front Seat Trim
- Power Retractable Assist Steps
- Pickup Box
- Black Front & Rear Molded Splash Guards (LPO)
- Gooseneck/5th Wheel Prep Package
- Trailer Tire Pressure Monitor Sensors
- 220 Amps Alternator
- Engine Block Heater
- High Idle Switch
- Winter Grille Cover
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- 2 USB Ports (1st Row)
- Lane Departure Warning System
- Ventilated front seats
- Auto-dimming Rear-View mirror
- 7 Speakers
- Compass
- Exterior Parking Camera Rear
- Auto High-beam Headlights
- AM/FM radio: SiriusXM with 360L
- Premium audio system: Premium GMC Infotainment System
- Apple CarPlay/Android Auto
- 4-Wheel Disc Brakes
- Air Conditioning
- Electronic Stability Control
- Front Center Armrest
- Navigation System
- Tachometer
- Voltmeter
- ABS brakes
- Alloy wheels
- Auto-dimming door mirrors
- Automatic temperature control
- Brake assist
- Bumpers: body-color
- Delay-off headlights
- Driver door bin
- Driver vanity mirror
- Dual front impact airbags
- Dual front side impact airbags
- Front anti-roll bar
- Front dual zone A/C
- Front fog lights
- Front reading lights
- Front wheel independent suspension
- Fully automatic headlights
- Garage door transmitter
- Genuine wood console insert
- Genuine wood door panel insert
- Heated door mirrors
- Heated front seats
- Heated rear seats
- Heated steering wheel
- Illuminated entry
- Low tire pressure warning
- Memory seat
- Occupant sensing airbag
- Outside temperature display
- Overhead airbag
- Overhead console
- Panic alarm
- Passenger door bin
- Passenger vanity mirror
- Power door mirrors
- Power driver seat
- Power passenger seat
- Power steering
- Power windows
- Rear reading lights
- Rear seat center armrest
- Rear step bumper
- Rear window defroster
- Remote keyless entry
- Security system
- Speed control
- Speed-sensing steering
- Split folding rear seat
- Steering wheel mounted audio controls
- Telescoping steering wheel
- Tilt steering wheel
- Traction control
- Trip computer
- Turn signal indicator mirrors
- Variably intermittent wipers
- Preferred Equipment Group 5SA
- 10-Way Power Driver Seat Adjuster w/Lumbar
- Denali Ultimate Package
- Driver Alert Package I
- Driver Alert Package II
- Technology Package
- Radio: Premium GMC Infotainment Sys w/Navigation
- Electric Rear-Window Defogger
- Front Prem Floor Liners w/Removable Carpet Insert
- OnStar & GMC Connected Services Capable
- 120-Volt Instrument Panel Power Outlet
- Bed View Camera w/2 Trailer Camera Provisions
- Power Sunroof
- Spray-On Pickup Box Bed Liner w/Denali Logo
- 6" Rectangular Chromed Tubular Assist Steps
- Deep-Tinted Glass
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Integrated Trailer Brake Controller
- Skid Plates
- Off-Road Suspension
- 2-Speed Active Transfer Case
- Inside Rearview Auto-Dimming Rear Camera Mirror
- SiriusXM w/360L
- Driver Memory
- Power Sliding Rear Window w/Defogger
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- GMC Connected Access Capable
- Power Front Passenger Windows w/Express Up/Down
- Power Rear Windows w/Express Down
- Keyless Open & Start
- Power Door Locks
- Power Windows w/Driver Express Up/Down
- Rear Wheelhouse Liners
- Rear Prem Floor Liners w/Removable Carpet Insert
- Remote Vehicle Starter System
- Compass Located In Instrument Cluster
- Floor-Mounted Center Console
- Signature Denali Grille
- Safety Alert Seat
- Hill Descent Control
- Wireless Charging
- Heated Driver & Front Outboard Passenger Seats
- Heated 2nd Row Outboard Seats
- 120-Volt Bed Mounted Power Outlet
- 12-Volt Rear Auxiliary Power Outlet
- Heated & Ventilated Front Bucket Seats
- 2 USB Ports
- Electrical Lock Control Steering Column
- Manual Tilt-Wheel/Telescoping Steering Column
- ProGrade Trailering System
- Hitch Guidance w/Hitch View
- IntelliBeam Automatic High Beam On/Off
- In-Vehicle Trailering System App
- HD Radio
- Ultrasonic Front & Rear Park Assist
- Following Distance Indicator
- Forward Collision Alert
- Rear Cross Traffic Alert
- Universal Home Remote
- Automatic Emergency Braking
- Steering Wheel Audio Controls
- Lane Change Alert w/Side Blind Zone Alert
- Bose Premium 7 Speaker Sound System
- 2nd Row Dual USB Charge-Only Ports
- Unauthorized Entry Theft-Deterrent System
- Multicolor 15" Diagonal Head-Up Display
- HD Surround Vision
- Chrome Recovery Hooks
- Polished Exhaust Tip
- 4G LTE Wi-Fi Hotspot Capable
- Wireless Phone Projection
- X31 Off-Road Package
- Front Bucket Seats
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 with 360L
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 8.0"
- Smart device integration: Android Auto/Apple CarPlay
- 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): 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")
- 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
- Exterior parking camera right
- 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: Front and Rear Park Assist 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
- Inside Rearview Auto-Dimming Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
- Rear Prem Floor Liners w/Removable Carpet Insert
- Driver Alert Package I
- Driver Alert Package II
- Safety Alert Seat
- Radio: Premium GMC Infotainment Sys w/Navigation
- Wireless Phone Projection
- 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
- Bed View Camera w/2 Trailer Camera Provisions
- HD Surround Vision
- Spray-On Pickup Box Bed Liner w/Denali Logo
- 6" Rectangular Chromed Tubular Assist Steps
- 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
- Deep-Tinted Glass
- Signature Denali Grille
- 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
- 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
- ProGrade Trailering System
- 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
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- Off-Road Suspension
- Hill Descent Control
- Skid Plates
Dealer Notes
KBB.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!
Policy on Hand Control Driving Devises
To accommodate our customers, we will install portable hand controls units that the customer provides to us in order to test drive a vehicle so long as the devise can be installed and removed without physical modification or alteration to the vehicle. If the customer does not have a portable vehicle hand control unit, we will provide one. For the safety of our customers and employees, these hand control units are installed at our service department. Appointments for a vehicle test drive using a hand control devise are strongly recommended for daytime hours to ensure that a licensed technician is available to install the hand control system and safety test before the customer test drive.
If you have any questions regarding this policy, please contact General Manager.
Dealer not responsible for typographical errors. Pictures are for illustration purposes only. All vehicles subject to prior sales. See dealer for details. MSRP may not be price at which vehicle is sold in trade area. New car prices include applicable manufacturer incentives in lieu of special financing. Plus tax, title, license & doc fee. New vehicle MPG's are EPA's estimated highway MPG's. Used car prices plus tax, title, license & doc fee. Used car MPG claims are based on EPA estimated city and highway ratings when vehicle was new. Consumers actual mileage will vary.
