GMC Sierra 2500HD III (GMT900) Crew Cab Long Box 6.6 Duramax TD V8 (365 Hp) 4WD Automatic
People\'s Opinion
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GMC Sierra 2500HD:
The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks. The fourth generation of the model line was introduced for the 2019 model year.
The Chevrolet Silverado shares mechanical commonality with the identically related GMC Sierra; GMC ended the use of the C/K nomenclature a model generation prior to Chevrolet. In Mexico, high-trim level versions of the Silverado use the Chevrolet Cheyenne name Starting with the LT trim. Standard and "Custom" trims are still called Silverado. Competing against the Ford F-Series, Ram pickup, Toyota Tundra, and Nissan Titan, the Silverado is among the best-selling vehicles in the United States, having sold over 12 million trucks since its introduction in 1998 as a 1999 model year....(Read more on Wikipedia)
III (GMT900) Crew Cab Long Box Overview:
GMC Sierra 2500HD (III (GMT900) Crew Cab Long Box). With 895 Nm of torque, it offers ample pulling power. At around 3115 kg, it’s on the heavier side. All‑wheel drive provides excellent grip, ideal for off‑road use. A vehicle with an open cargo bed at the back, suitable for transporting goods. Seating for 5 makes it ideal for daily use.
Performance Verdict
The pinnacle of performance for this generation, combining the immense torque of the Duramax with the added traction of 4WD. Unmatched for extreme towing and challenging terrain.
Fuel Economy
Offers the best balance of power and fuel efficiency in its class for heavy-duty applications, though still a large truck. Diesel's efficiency shines under load.
Best Use Case:
Extreme heavy-duty towing, off-road work, severe weather conditions, commercial fleets, and any scenario demanding maximum capability.
Pros and Cons:
Pros:
- • Exceptional towing and hauling capabilities, especially with the Duramax diesel
- • Robust and durable build quality, designed for heavy work
- • Spacious Crew Cab interior offers comfort for multiple passengers
- • Proven powertrain reliability (Duramax and Allison transmission)
- • Strong resale value for diesel models
Cons:
- • Poor fuel economy with gasoline engines, particularly under load
- • Large size can make maneuvering and parking challenging in urban areas
- • Ride quality can be stiff when unladen, typical for heavy-duty trucks
- • Interior materials, while durable, may feel less refined than some competitors
- • High initial purchase price and maintenance costs for diesel variants
Specifications:
| General: |
| Brand: | GMC |
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| Model: | Sierra 2500HD |
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| Generation: | III (GMT900) Crew Cab Long Box |
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| Modification (Engine): | 6.6 Duramax TD V8 (365 Hp) 4WD Automatic |
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| Start of production: | 2007 |
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| End of production: | 2010 |
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| Powertrain Architecture: | Internal Combustion engine |
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| Body type: | Pick-up |
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| Seats: | 5 |
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| Doors: | 4 |
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| Engine: |
| Engine systems: | Particulate filter |
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| Power: | 365 Hp @ 3200 rpm. |
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| Power per litre: | 55.3 Hp/l |
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| Torque: | 895 Nm @ 1600 rpm. |
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| Engine Model/Code: | Duramax LMM |
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| Engine displacement: | 6599 |
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| Number of cylinders: | 8 |
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| Engine configuration: | V-engine |
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| Number of valves per cylinder: | 4 |
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| Fuel injection system: | Diesel Commonrail |
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| Engine aspiration: | Turbocharger, Intercooler |
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| Valvetrain: | OHV |
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| Engine oil capacity: | 9.5 l |
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| Coolant: | 24 l |
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| Engine layout: | Front, Longitudinal |
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| Cylinder Bore: | 103 mm mm |
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| Piston Stroke: | 99 mm mm |
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| Compression ratio: | 16.8:1 |
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| Maximum engine speed: | 3450 rpm. |
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| Performance: |
| Fuel Type: | Diesel |
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| Weight-to-power ratio: | 8.5 kg/Hp, 117.2 Hp/tonne |
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| Weight-to-torque ratio: | 3.5 kg/Nm, 287.3 Nm/tonne |
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| Space: |
| Kerb Weight: | 3115 |
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| Max. weight: | 4173 |
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| Max load: | 1058 |
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| Trunk (boot) space - maximum: | 2138 l |
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| Permitted trailer load with brakes (12%): | 5897 kg |
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| Fuel tank capacity: | 129 l |
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| Size: |
| Length: | 6572 mm mm |
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| Width: | 2436 mm mm |
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| Height: | 1930 mm mm |
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| Wheelbase: | 4242 mm mm |
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| Width including mirrors: | 2436 mm |
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| Front track: | 1744 mm |
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| Rear (Back) track: | 1676 mm |
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| Ride height (ground clearance): | 243 mm |
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| Minimum turning circle (turning diameter): | 16.8 m |
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| Powertrain: |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
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| Drive wheel | All wheel drive (4x4) |
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| Number of gears | 6 |
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| Transmission type | Automatic |
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| Gearbox type | Allison |
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| Front brakes | Ventilated discs, 325x38 mm |
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| Rear brakes | Ventilated discs, 325x30 mm |
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| Assisting systems | ABS (Anti-lock braking system) |
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| Steering type | Cone worm with recirculation balls |
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| Tires size | 245/75 R16; 265/75 R17 |
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| Wheel rims size | 6.5J x 16; 7.5J x 17 |
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| Front suspension | Independent torsion bar, double wishbone |
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| Rear suspension | Rigid axle suspension, Leaf spring |
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Behind the wheel of the GMC Sierra 2500HD. How does it handle on the road?