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New 2026 GMC Sierra 2500HD Denali Ultimate
Dunn, NC 28334
For Sale:Price Unknown
- Truck
- Pickup
- Crew Cab
- Luxury
- Condition
- New
- Aggregate Ratings
- 44 out of 5 stars
- Generation
- 4(2020 - 2026)
- Trim
- Denali Ultimate
- Drivetrain
- 4X4
- Transmission
- 10-Speed Shiftable Automatic
- Exterior Color
- Onyx Black (Black)Factory Paint Code:GBA
- Interior Color
- Alpine Umber (Brown & Beige)Factory Paint Code:H40
- Size Segment
- Heavy Duty
- Doors
- 4
- Max Seating
- 5
- Ground Clearance
- 10.3inch
- Final Assembly Point
- Flint, Michigan
- VIN
- 1GT4UXEY8TF266459
Engine6.6L V8 Bio Diesel 470hp
- Fuel Type:Bio Diesel
- Max Horsepower:470 hp @ 2800 rpm
- Max Torque:975 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
* Based on opinions and should be considered as general guidance only.
- Reliability (4)4 out of 5 starsGMC trucks generally have a strong reputation for durability. While specific long-term data for the 2026 model isn't available, the underlying platform and powertrains are well-proven.
- Maintenance (3)3 out of 5 starsAs with any heavy-duty truck, maintenance costs can be higher due to larger components and fluids. However, the robust build suggests fewer unexpected issues, potentially balancing out some of the cost.
- Technology (4)4 out of 5 starsGMC has packed in a comprehensive suite of technology, including a large infotainment screen, advanced driver aids, and useful towing-focused features. While generally intuitive, some menus can be a bit deep.
- Comfort (5)5 out of 5 starsThe Denali Ultimate trim truly shines here. The cabin is exceptionally quiet, seats are supremely comfortable for long hauls, and the ride quality, even when unladen, is remarkably smooth for an HD truck.
- Dynamics (4)4 out of 5 starsThe 2026 Sierra 2500HD Denali Ultimate offers impressive power and towing capability, but its sheer size and weight can make it feel less agile in everyday driving compared to smaller trucks.
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:10.3in.
Wheels & Tires:
- Tire:LT275/65R20
Fuel Tank:
- Fuel Tank Volume:35.9gallon
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Listed on April 22, 2026 (4 hours ago)
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