Five Brothers Auto Cumming

3344 BUFORD HWY, Cumming, GA 30041
4.9
4.9 out of 5 stars

Used 2015 GMC Sierra 2500HD Denali

18,610 miles
For Sale:$48,999
Estimated payment:$1,111/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $30,800 and $36,200, while the current price is $48,999.$30,800 - $36,200$48,999
  • Priced at $48,999, this vehicle is $12,799 above the high end of its fair market value of $36,200.

  • The current fair market price range is between $30,800 to $36,200.

  • It has 18,610 miles, which is 118,590 (86%) below the median mileage of 137,200.

Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.

View Full Value Report
  • Truck
  • Pickup
  • Crew Cab
  • Luxury
  • Very Comfortable
  • Heavy Hauler
  • Extended Front Legroom
  • Vaulted Headroom
  • Condition
    Used
  • Mileage
    18,610miles
  • Aggregate Ratings
    4
    4 out of 5 stars
  • Generation
    3(2014 - 2019)
  • Trim
    Denali
  • Drivetrain
    4X4
  • Transmission
    6-Speed Shiftable Automatic
  • Upholstery
    Leather
  • Size Segment
    Heavy Duty
  • Doors
    4
  • Max Seating
    5
  • Max Towing Capacity
    17,100lbs.
  • Weight Class
    6,000-10,000 lbs. (2)
  • Bed Length
    78.9in.
  • Ground Clearance
    9.7inch
  • NHTSA Safety Ratings
    4
    4 out of 5 stars
  • Final Assembly Point
    Flint, Michigan
  • VIN
    1GT120EGXFF635933
  • Starting MSRP
    $56,200

Engine6L V8 Flex Fuel 360hp

  • Fuel Type:Flex Fuel
  • Fuel Quality:87
  • Max Horsepower:360 hp @ 5400 rpm
  • Power to Weight Ratio:18.13lbs/hp
  • Max Torque:380 ft.lbf @ 4200 rpm
  • Brand:Vortec
  • Displacement:6liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Naturally Aspirated
  • Fuel Induction:Sequential Electronic Fuel Injection
  • Redline:6,000rpm
  • Oil Capacity:5.7liters
  • Cam Type:OHV
  • Stroke:3.62
  • Bore:4
  • Valves:16

Message from the seller

2015 GMC Sierra 2500 HD Crew Cab Denali – Professional Grade Strength with Luxury Refinement
The 2015 GMC Sierra 2500 HD Denali is the definitive heavy-duty pickup for those who require maximum towing capability without sacrificing the comforts of a high-end luxury vehicle. Positioned at the pinnacle of the GMC lineup, the Denali trim transforms this rugged workhorse into a sophisticated command center, making it as suitable for a construction site as it is for a premium valet stand.
Under the hood, this heavy-duty beast is powered by the legendary 6.0-liter V8 engine, delivering 360 horsepower and 380 lb-ft of torque. Paired with a heavy-duty 6-speed automatic transmission, this powertrain is engineered for sustained performance under load. For those tackling the toughest tasks, the Sierra 2500 HD offers a maximum towing capacity of up to 14,500 lbs, ensuring that large trailers, boats, or equipment are handled with absolute confidence.
The driving experience is surprisingly composed for a 3/4-ton truck. Thanks to the Denali-specific suspension tuning and a fully boxed high-strength steel frame, the ride is smooth and vibration-free. The Digital Steering Assist system provides a light feel at low speeds for easier parking maneuvers while firming up at highway speeds to provide a stable, centered feel even when hauling a heavy payload in the 6 1/2-foot bed.
On the exterior, the Denali trim is unmistakable. It features the iconic chrome honeycomb grille, body-colored bumpers, and 20-inch polished aluminum wheels. The 6 1/2-foot bed is highly functional, equipped with the CornerStep rear bumper and EZ-Lift & Lower tailgate, making access to the cargo area effortless. The Crew Cab configuration provides a massive footprint, exuding a sense of authority and 'Professional Grade' durability.
Inside, the cabin is a sanctuary of premium materials and advanced technology, offering:
Perforated leather-appointed heated and ventilated front bucket seats
Distinctive Denali brushed aluminum trim and authentic wood accents
8-inch Color Touch Radio with IntelliLink and Navigation
Bose® Premium Audio System for a concert-like sound experience
Despite its rugged purpose, the Sierra 2500 HD Denali is incredibly practical for long-distance travel. The Crew Cab offers massive legroom for rear passengers, and the center console is large enough to store a laptop or hanging file folders. Triple door seals and aerodynamic exterior mirrors ensure the cabin remains whisper-quiet, shielding occupants from road and wind noise.
Durability and safety are integrated into every component. The 2015 model includes StabiliTrak with Proactive Roll Avoidance and Trailer Sway Control as standard. The Driver Alert Package adds Forward Collision Alert and Lane Departure Warning, utilizing vibration pulses in the Safety Alert Seat to keep the driver focused and aware of their surroundings.
The 2015 GMC Sierra 2500 HD Crew Cab Denali is the perfect intersection of brawn and beauty. It is the ideal choice for the driver who needs a truck that can work all day and still provide a first-class experience for the evening commute.
Powerful. Prestigious. Uncompromising Capability. ??

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

  • Reliability (4)
    4 out of 5 stars
    Generally considered very reliable, especially the powertrain, with a solid build quality.
  • Maintenance (3)
    3 out of 5 stars
    Parts and specialized service can be more expensive than smaller trucks, but routine maintenance is straightforward.
  • Technology (4)
    4 out of 5 stars
    Infotainment system is user-friendly, and features like backup camera and navigation are well-integrated, though some tech feels slightly dated compared to newer models.
  • Comfort (5)
    5 out of 5 stars
    Denali trim offers a luxurious and quiet cabin, with very comfortable seating for long journeys.
  • Dynamics (4)
    4 out of 5 stars
    Powerful engine and capable for heavy towing, but can feel a bit cumbersome in everyday driving.

  • Comfort & Seating:

    • Cooled Seats
    • Heated Seats
    • Heated Steering Wheel
    • Power Seats
  • Convenience:

    • 115V Power Outlet
    • Adjustable Pedals
    • Automatic Climate Control
    • Garage Door Opener
    • Parking Sensors
    • Remote Start
  • Entertainment:

    • Bluetooth
    • Premium Audio
    • Satellite Radio
  • Exterior:

    • Heated Mirrors
    • Tinted Windows
  • Other:

    • Trailer Hitch
  • Safety:

    • Backup Camera
    • Tire Pressure Monitoring
  • Technology:

    • Navigation

  • Seating:

    • Seating Rows:2
    • Standard Seating:5
    • Max Seating:5
    • Head Room (front):42.8in.
    • Leg Room (front):45.3in.
    • Shoulder Room (front):64.8in.
    • Hip Room (front):60.7in.
    • Head Room (rear):40.5in.
    • Leg Room (rear):40.9in.
    • Shoulder Room (rear):64.3in.
    • Hip Room (rear):60.2in.
  • Measurements:

    • Length:239.5in.
    • Width:80.5in.
    • Height:78.2in.
    • Bed Length:78.9in.
    • Ground Clearance:9.7in.
    • Wheelbase:153.7in.
    • Front Track:68.8in.
    • Rear Track:67.3in.
  • Weight:

    • Curb Weight:6,525lbs
    • Gross Weight:9,500lbs
    • Gross Combined Weight:20,500lbs
  • Wheels & Tires:

    • Wheel Diameter:18.0 x 8.0in.
    • Wheel Diameter (rear):18.0 x 8.0in.
    • Tire:LT265/70R18E
    • Tire (rear):LT265/70R18E
  • Performance:

    • Power to Weight Ratio:18.13lbs/hp
    • Turning Circle:51.5ft.
    • Max Payload:3,152lbs
    • Towing Capacity:13,000lbs
    • Max Towing Capacity:17,100lbs
  • Fuel Tank:

    • Fuel Tank Volume:36gallon

All warranties have now EXPIRED

  • Corrosion Perforation
    6 years/100,000 miles
  • Roadside Assistance
    5 years/100,000 miles
  • Courtesy Transportation
    5 years/100,000 miles
  • Transferable Powertrain
    5 years/100,000 miles
  • Bumper to Bumper
    3 years/36,000 miles
  • Corrosion
    3 years/36,000 miles
  • Complimentary Factory Scheduled Maint.
    2 years/20,000 miles

  • California LEV-III LEV395:

    • Air Pollution Score:1
    • Fuel Type:Ethanol
    • Epa Underhood Id:FGMXD06.0397

2015 GMC Sierra 2500HD

The 2015 GMC Sierra 2500HD is a formidable heavy-duty pickup truck built for serious work and towing. It offers robust performance, a comfortable and well-appointed interior, and the legendary capability expected from the Sierra HD lineup. This model year brought a significant redesign, making it a compelling choice for those needing a truck that can handle demanding jobs.

Highlights

  • Engine Options:

    • 6.0L Vortec V8: This gasoline engine provides ample power for everyday hauling and towing needs. It's a reliable workhorse known for its stout performance.
    • 6.6L Duramax Turbo-Diesel V8: The star of the show for heavy-duty applications. This diesel engine delivers exceptional torque, making it ideal for towing large trailers, fifth-wheels, and goosenecks with ease. It's renowned for its pulling power and efficiency under load.
  • Safety Features:

    • StabiliTrak Stability Control: Helps maintain control of the vehicle during challenging driving conditions, especially when towing, by automatically detecting and reducing skidding.
    • Trailer Sway Control: Works in conjunction with StabiliTrak to detect and mitigate trailer sway, providing a safer towing experience.
    • Hill Start Assist: Prevents the truck from rolling backward when starting on an incline, crucial for hitching and unhitching trailers.
    • Rear Vision Camera: Aids in backing up, especially when connecting to trailers, improving visibility and safety.
    • Available Forward Collision Alert and Lane Departure Warning: These advanced driver-assistance systems can help prevent accidents by alerting the driver to potential hazards.
  • Trim Summary:

    • Sierra: The base trim offers essential features and robust capability, making it a no-nonsense work truck.
    • SLE: Steps up with more comfort and convenience features, including upgraded interior materials, power-adjustable features, and enhanced infotainment.
    • All-Terrain (2500HD Specific): Designed for those who venture off the beaten path, this trim adds unique styling cues, off-road suspension enhancements, and all-terrain tires for increased capability in rougher conditions.
    • Denali: The premium offering, the Denali boasts luxurious interior appointments, advanced technology, and distinctive exterior styling, providing a refined experience for a heavy-duty truck.
  • Other Notable Aspects:

    • Strong Towing and Payload Capacity: The Sierra 2500HD is engineered to handle substantial loads, making it a go-to choice for contractors, farmers, and RV enthusiasts.
    • Comfortable and Quiet Ride: Despite its heavy-duty nature, the 2015 Sierra 2500HD offers a surprisingly comfortable and composed ride, even when unloaded, thanks to its well-tuned suspension.
    • Spacious and Functional Interior: The cabin is designed for practicality and comfort, with ample storage solutions and user-friendly controls. Higher trims offer premium materials and advanced infotainment systems.
    • Distinctive Exterior Styling: The 2015 model features a bold and aggressive front-end design that clearly communicates its heavy-duty capabilities.

What to Expect

Ownership of a 2015 GMC Sierra 2500HD is generally characterized by its unwavering capability and robust build quality. You can expect this truck to be a dependable partner for demanding tasks. Maintenance will be more substantial than a light-duty truck, with larger tires, brakes, and more robust engine components. Regular oil changes, filter replacements, and fluid checks are crucial, especially for the Duramax diesel engine, where following the recommended service intervals for diesel-specific fluids and filters is paramount.

Insurance costs will likely be higher than for a smaller vehicle due to the truck's size, weight, and higher replacement value, especially if it's equipped with the Duramax diesel engine and higher trim levels. Fuel economy, particularly with the diesel engine, will be better than the gasoline V8 when towing heavy loads, but in everyday driving, expect fuel consumption to be higher than smaller trucks.

Potential Considerations

  • Diesel Engine Maintenance Costs: While the Duramax diesel is incredibly capable, its maintenance can be more expensive than the gasoline engine. Specific diesel fuel filters, exhaust fluid (if equipped with DEF, though less common on the '15), and potential for more complex repairs down the line are factors to consider.
  • Ride Comfort When Unloaded: While improved for its class, the heavy-duty suspension can still result in a firmer ride when the truck is not carrying a load or towing.
  • Maneuverability: The sheer size of the 2500HD can make it less agile in tight urban environments or crowded parking lots compared to smaller trucks.
  • Infotainment System Maturity: While functional, the infotainment system is of its era and may not offer the same seamless smartphone integration or feature set as newer vehicles.

Overall Summary

The 2015 GMC Sierra 2500HD is a highly capable and well-rounded heavy-duty pickup truck. It excels in towing and hauling, offering a choice between a strong gasoline V8 and a torque-rich Duramax diesel. With a comfortable and refined interior, especially in higher trims like the Denali, it provides a pleasant ownership experience for those who regularly need to tackle demanding jobs. While routine maintenance might be more involved and costly than a light-duty truck, its durability and performance make it a worthwhile investment for serious truck users.

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Listed on April 19, 2026 (2 hours ago)
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This Used 2015 GMC Sierra 2500HD Denali is available for drivers in Lawrenceville, Alpharetta, Cumming, Atlanta, Gainesville, Duluth, Buford, Roswell ...

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Used 2015 GMC Sierra 2500HD Denali for sale in Cumming, GA 30041 | Cruz.com