GMC Sierra 2500HD III (GMT900) Extended Cab Standard Box 6.6 Duramax TD V8 (365 Hp) 4WD Automatic


Overall Rating

8.3 / 10
Safety N/A / 5
Not Rated
Engine 4.8 / 5
Value 4.0 / 5
Performance 4.5 / 5
Comfort 3.5 / 5
People\'s Opinion N/A / 5
Not Rated

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) Extended Cab Standard Box Overview:

GMC Sierra 2500HD (III (GMT900) Extended Cab Standard Box). With 895 Nm of torque, it offers ample pulling power. At around 2978 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.

6.6 Duramax TD V8 (365 Hp) 4WD Automatic Verdict:

Rating 5 stars

Performance Verdict

The ultimate combination of immense power, torque, and all-weather/off-road capability, making it ideal for the most demanding tasks and terrains.

Fuel Economy

Excellent fuel efficiency for its class and capability, though 4WD adds a slight penalty. Still the most economical choice for heavy work.

Best Use Case: Extreme heavy-duty towing, off-road work, severe weather conditions, and commercial applications requiring maximum capability.

Pros and Cons:

Pros:

  • • Exceptional towing and hauling capabilities
  • • Powerful Duramax diesel engine option
  • • Durable and robust construction
  • • Comfortable ride for a heavy-duty truck
  • • Spacious extended cab

Cons:

  • • Poor fuel economy (especially gasoline V8s)
  • • Large size can be challenging in urban environments
  • • Interior plastics can feel dated
  • • Higher maintenance costs for diesel engines
  • • Limited maneuverability due to long wheelbase

Specifications:

General:
Brand:GMC
Model:Sierra 2500HD
Generation:III (GMT900) Extended Cab Standard Box
Modification (Engine):6.6 Duramax TD V8 (365 Hp) 4WD Automatic
Start of production:2007
End of production:2010
Powertrain Architecture:Internal Combustion engine
Body type:Pick-up
Seats:5
Doors:2
Engine:
Engine systems:Particulate filter
Power:365 Hp @ 3200 rpm.
Power per litre:55.3 Hp/l
Torque:895 Nm @ 1600 rpm.
Engine Model/Code:Duramax LMM
Engine displacement:6599
Number of cylinders:8
Engine configuration:V-engine
Number of valves per cylinder:4
Fuel injection system:Diesel Commonrail
Engine aspiration:Turbocharger, Intercooler
Valvetrain:OHV
Engine oil capacity:9.5 l
Coolant:24 l
Engine layout:Front, Longitudinal
Cylinder Bore:103 mm mm
Piston Stroke:99 mm mm
Compression ratio:16.8:1
Maximum engine speed:3450 rpm.
Performance:
Fuel Type:Diesel
Weight-to-power ratio:8.2 kg/Hp, 122.6 Hp/tonne
Weight-to-torque ratio:3.3 kg/Nm, 300.5 Nm/tonne
Space:
Kerb Weight:2978
Max. weight:4173
Max load:1195
Trunk (boot) space - maximum:1718 l
Permitted trailer load with brakes (12%):5897 kg
Fuel tank capacity:98 l
Size:
Length:5850 mm mm
Width:2032 mm mm
Height:1951 mm mm
Wheelbase:3645 mm mm
Width including mirrors:2032 mm
Front track:1744 mm
Rear (Back) track:1676 mm
Ride height (ground clearance):243 mm
Minimum turning circle (turning diameter):14.5 m
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary.
Drive wheelAll wheel drive (4x4)
Number of gears6
Transmission typeAutomatic
Gearbox typeAllison
Front brakesVentilated discs, 325x38 mm
Rear brakesVentilated discs, 325x30 mm
Assisting systemsABS (Anti-lock braking system)
Steering typeCone worm with recirculation balls
Tires size245/75 R16; 265/75 R17
Wheel rims size6.5J x 16; 7.5J x 17
Front suspensionIndependent torsion bar, double wishbone
Rear suspensionRigid axle suspension, Leaf spring

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