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Dunn Country Chevrolet GMC

700 BIRKES ROAD, Eufaula, OK 74432
4.5
4.5 out of 5 stars
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Used 2021 GMC Sierra 2500HD Denali

148,704 miles
For Sale:Price Unknown
  • Truck
  • Pickup
  • Crew Cab
  • Luxury
  • Condition
    Used
  • Mileage
    148,704miles
  • Aggregate Ratings
    4
    4 out of 5 stars
  • Generation
    4(2020 - 2026)
  • Trim
    Denali
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • Exterior Color
    Summit White (White)Factory Paint Code:GAZ
  • Interior Color
    Jet Black (Black)Factory Paint Code:H2X
  • Size Segment
    Heavy Duty
  • Doors
    4
  • Max Seating
    5
  • Max Towing Capacity
    14,500lbs.
  • Ground Clearance
    10.1inch
  • Final Assembly Point
    Flint, Michigan
  • VIN
    1GT49REY3MF132375

Engine6.6L V8 Bio Diesel 445hp

  • Fuel Type:Bio Diesel
  • Max Horsepower:445 hp @ 2800 rpm
  • Max Torque:910 ft.lbf @ 1600 rpm
  • Brand:Duramax
  • Displacement:6.6liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Turbo
  • Fuel Induction:Common Rail Direct Injection
  • Oil Capacity:9.5liters
  • Cam Type:OHV
  • Stroke:3.9
  • Bore:4.06
  • Valves:32

Message from the seller

10-Speed Automatic, 4WD, Jet Black Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 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, 220 Amps Alternator, 2nd Row Dual USB Charge-Only Ports, 4-Wheel Disc Brakes, 4G LTE Wi-Fi Hotspot Capable, 6'' Rectangular Chromed Tubular Assist Steps, 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 Emergency Braking, Automatic temperature control, Bed View Camera w/2 Trailer Camera Provisions, Bose Premium 7 Speaker Sound System, Brake assist, Bumpers: body-color, Chrome Recovery Hooks, Compass, Compass Located In Instrument Cluster, Deep-Tinted Glass, Delay-off headlights, Denali Ultimate Package, Driver Alert Package I, Driver Alert Package II, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Electronic Stability Control, Engine Block Heater, Exhaust Brake, Exterior Parking Camera Rear, Floor-Mounted Center Console, Following Distance Indicator, Forge Perforated Leather-Appointed Front Seat Trim, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, 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, GMC Connected Access Capable, Gooseneck/5th Wheel Prep Package, HD Radio, HD Surround Vision, Heated & Ventilated Front Bucket Seats, Heated 2nd Row Outboard Seats, Heated door mirrors, Heated Driver & Front Outboard Passenger Seats, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp Battery, Hill Descent Control, Hitch Guidance w/Hitch View, Hitch Package (LPO), Illuminated entry, In-Vehicle Trailering System App, Inside Rearview Auto-Dimming Rear Camera Mirror, 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, LED Smoked Amber Roof Marker Lamps, Low tire pressure warning, Manual Tilt-Wheel/Telescoping Steering Column, Memory seat, Multicolor 15'' Diagonal Head-Up Display, Navigation System, Occupant sensing airbag, Off-Road Suspension, OnStar & GMC Connected Services Capable, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Pickup Box, Polished Exhaust Tip, Power Door Locks, Power door mirrors, Power driver seat, Power Front Passenger Windows w/Express Up/Down, Power passenger seat, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Defogger, Power steering, Power Sunroof, Power windows, Power Windows w/Driver Express Up/Down, Preferred Equipment Group 5SA, Premium audio system: Premium GMC Infotainment System, Radio: Premium GMC Infotainment Sys w/Navigation, Rear Cross Traffic Alert, Rear reading lights, Rear seat center armrest, Rear step bumper, Rear Wheelhouse Liners, Rear window defroster, Remote keyless entry, Remote Vehicle Starter System, Safety Alert Seat, Security system, Signature Denali Grille, SiriusXM w/360L, Speed control, Speed-sensing steering, Split folding rear seat, Spray-On Pickup Box Bed Liner w/Denali Logo, Steering Wheel Audio Controls, Steering wheel mounted audio controls, Tachometer, Technology Package, Telescoping steering wheel, Tilt steering wheel, Traction control, Trip computer, Turn signal indicator mirrors, Ultrasonic Front & Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Universal Home Remote, Variably intermittent wipers, Ven

* Based on opinions and should be considered as general guidance only.

  • Reliability (4)
    4 out of 5 stars
    GMC heavy-duty trucks generally have a strong reputation for reliability, especially with their powertrains. While some minor electrical gremlins can occur, major mechanical issues are rare when properly maintained.
  • Maintenance (3)
    3 out of 5 stars
    As a heavy-duty truck, maintenance costs can be higher than a light-duty vehicle. Parts are more expensive, and specialized fluids and larger tires contribute to higher routine service expenses. Fuel economy is also a factor in overall running costs.
  • Technology (4)
    4 out of 5 stars
    GMC has packed the Denali with a good suite of technology, including a large infotainment screen with Apple CarPlay and Android Auto, a comprehensive camera system, and various driver-assist features. While generally intuitive, some menus can be a bit deep.
  • Comfort (5)
    5 out of 5 stars
    The Denali trim truly shines in comfort. The interior is luxurious with premium materials, heated and ventilated seats, and a quiet cabin. The ride, while firm due to its HD nature, is remarkably smooth for a truck designed for heavy work, making long journeys pleasant.
  • Dynamics (4)
    4 out of 5 stars
    For a heavy-duty truck, the Sierra 2500HD Denali handles surprisingly well. The steering is responsive, and while it's a big vehicle, it doesn't feel overly cumbersome in most driving situations. The powerful engine options provide ample acceleration and towing capability.

  • Seating:

    • Seating Rows:2
    • Standard Seating:5
    • Max Seating:5
    • Leg Room (front):44.5in.
    • Leg Room (rear):43.4in.

  • Measurements:

    • Width:81.9in.
    • Ground Clearance:10.1in.

  • Wheels & Tires:

    • Tire:LT275/65R20

  • Performance:

    • Towing Capacity:14,500lbs
    • Max Towing Capacity:14,500lbs

  • Fuel Tank:

    • Fuel Tank Volume:36gallon

2021 GMC Sierra 2500HD: A Heavy-Duty Workhorse

The 2021 GMC Sierra 2500HD is a full-size heavy-duty pickup truck engineered for demanding tasks, from towing substantial trailers to hauling heavy payloads. It offers a blend of robust capability, refined interior appointments, and advanced technology, making it a compelling choice for those who require serious muscle and a comfortable driving experience.

Highlights

  • Engine Options: The Sierra 2500HD provides two formidable powertrain options to tackle any job:

    • 6.6L V8 Gas Engine: This gasoline powerhouse delivers strong performance for everyday hauling and towing needs.
    • 6.6L Duramax Turbo-Diesel V8 Engine: For maximum towing and hauling capability, the Duramax diesel is the undisputed champion. Its immense torque allows for effortless towing of gooseneck and fifth-wheel trailers, as well as the heaviest loads. This engine is paired with an Allison 10-speed automatic transmission, known for its smooth shifting and robust performance under load.

  • Safety Features: GMC equips the Sierra 2500HD with a suite of advanced driver-assistance systems designed to enhance awareness and prevent collisions:

    • Forward Collision Alert: Provides warnings if a potential front-end collision is detected, prompting the driver to take action.
    • Automatic Emergency Braking: Can automatically apply the brakes to help mitigate or avoid a collision if the system detects an imminent frontal impact and the driver doesn't respond.
    • Lane Departure Warning: Alerts the driver if the vehicle begins to drift out of its lane without the turn signal being activated, promoting driver attentiveness.
    • Blind Spot Monitor: Uses sensors to detect vehicles in the blind spots on either side of the truck, providing visual and audible alerts.
    • Rear Cross-Traffic Alert: Warns the driver of approaching traffic when reversing out of a parking spot or driveway.
    • Hitch Guidance with Hitch View: This innovative feature offers a dynamic guideline on the rearview camera display to assist with trailer alignment during hitching, and Hitch View provides a zoomed-in perspective of the trailer coupling area.

  • Trim Summary: The 2021 Sierra 2500HD is available in a range of trims, each offering a progressively higher level of luxury, capability, and features:

    • Pro: The no-nonsense, work-focused base trim, offering essential capability for demanding jobs.
    • SLE: A well-equipped trim that balances workhorse functionality with added comfort and convenience features.
    • All-Terrain: Built for off-road adventures, this trim includes specialized tires, suspension enhancements, and distinctive styling cues.
    • SLT: Offers a significant upgrade in interior refinement and technology, making it a more comfortable daily driver.
    • AT4: The premium off-road focused trim, combining the capabilities of the All-Terrain with luxurious appointments and exclusive off-road features.
    • Denali: The pinnacle of Sierra luxury, this trim boasts the most sophisticated interior materials, advanced technology, and exclusive styling elements, providing a near-luxury experience in a heavy-duty truck.

  • Other Notable Aspects:

    • Durability and Construction: Built with high-strength steel frames and body panels, the Sierra 2500HD is engineered for longevity and resilience in tough environments.
    • Towing Technology: Beyond Hitch Guidance, GMC offers an integrated trailer brake controller, trailer sway control, and available trailer cameras, all contributing to a more confident and secure towing experience.
    • ProGrade Trailering System: This suite of features aims to simplify and enhance the towing process, from hitching to managing trailer stability.
    • Spacious Cabins: The Sierra 2500HD offers spacious crew cab and double cab configurations, providing ample room for passengers and cargo.

What to Expect

Owning a 2021 GMC Sierra 2500HD is typically an experience of robust capability and dependable performance. For owners who regularly tow or haul, the truck will likely live up to its heavy-duty billing, making light work of demanding tasks. The diesel engine, in particular, offers exceptional range and towing power, making it ideal for long-distance hauls or frequent trailer use.

Maintenance: As with any heavy-duty vehicle, routine maintenance is crucial to ensure longevity and optimal performance. Expect regular oil changes (potentially more frequent with the diesel under heavy use), filter replacements, and inspections of vital components like the brakes, suspension, and exhaust system. The diesel engine may also require specific additive top-ups or regeneration cycles, depending on driving habits.

Insurance: Insurance costs for a heavy-duty truck like the Sierra 2500HD will generally be higher than for a standard pickup or passenger vehicle. This is due to the truck's higher purchase price, its significant towing and hauling capacity (which can lead to higher repair costs if involved in an accident), and the potential for it to be used in commercial applications. Factors such as your driving record, location, chosen coverage levels, and the specific trim level will all influence the final premium.

Potential Considerations

  • Fuel Economy: While powerful, the heavy-duty nature and larger engines of the Sierra 2500HD mean that fuel efficiency will not be a strong suit, especially when towing or hauling. Expect significantly lower MPG figures compared to lighter-duty trucks.
  • Maneuverability: The sheer size and weight of the Sierra 2500HD can make it challenging to maneuver in tight spaces, such as crowded parking lots or narrow city streets. Parking can require more planning and attention.
  • Ride Comfort (Unladen): While the suspension is designed to handle heavy loads, the ride can be firmer and bouncier when the truck is unloaded compared to a half-ton pickup.
  • Diesel Engine Complexity: While the Duramax diesel is incredibly capable, it can be more complex and potentially more expensive to repair than the gasoline V8, especially if issues arise with emissions systems or turbochargers.

Overall Summary

The 2021 GMC Sierra 2500HD stands as a formidable contender in the heavy-duty truck segment, offering a compelling package of power, towing prowess, and modern amenities. With its robust engine options, advanced towing technology, and a range of well-appointed trims, it caters to a wide spectrum of needs for those who demand more from their truck. While its size and fuel consumption are inherent characteristics of its class, the Sierra 2500HD delivers on its promise of uncompromising capability and a comfortable, feature-rich ownership experience for those who require a true workhorse.

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Listed on April 23, 2026 (14 hours ago)
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Used 2021 GMC Sierra 2500HD Denali for sale in Eufaula, OK 74432 | Cruz.com