GMC Sierra 2500HD III (GMT900, facelift 2011) Regular Cab Long Box 6.6 Duramax TD V8 (397 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, facelift 2011) Regular Cab Long Box Overview:

GMC Sierra 2500HD (III (GMT900, facelift 2011) Regular Cab Long Box). With 1037 Nm of torque, it offers ample pulling power. At around 3094 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 2 makes it ideal for daily use.

6.6 Duramax TD V8 (397 Hp) 4WD Automatic Verdict:

Rating 5 stars

Performance Verdict

Unmatched power and torque for the most demanding towing and hauling tasks, combined with 4WD for superior traction and off-road capability.

Fuel Economy

Best fuel efficiency for a heavy-duty truck with 4WD, though still a large diesel, offering a good balance of power and range for its class.

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

Pros and Cons:

Pros:

  • • Exceptional towing and hauling capacity, especially with the Duramax diesel.
  • • Robust and durable build quality, designed for heavy-duty work.
  • • Available CNG option provides a cost-effective and environmentally friendlier fuel alternative for fleets.
  • • Comfortable interior for a work truck, with practical features.

Cons:

  • • Fuel economy of gasoline engines can be poor, particularly under load.
  • • Large size and long wheelbase can make maneuvering in tight spaces challenging.
  • • Ride comfort can be stiff when the truck is unloaded, typical for heavy-duty suspensions.
  • • Limited advanced technology features compared to modern trucks.

Specifications:

Specifications are compared to those of the previous generation(III (GMT900) Extended Cab Long Box: 2007 - 2010).

General:
Brand:GMC
Model:Sierra 2500HD
Generation:III (GMT900, facelift 2011) Regular Cab Long Box
Modification (Engine):6.6 Duramax TD V8 (397 Hp) 4WD Automatic
Start of production:2011
End of production:2014
Powertrain Architecture:Internal Combustion engine
Body type:Pick-up
Seats:2
Doors:2
Engine:
Engine systems:Particulate filter
Power:397 Hp @ 3000 rpm. Same horsepower
Power per litre:60.2 Hp/l [615mm less]
Torque:1037 Nm @ 1600 rpm.
Engine Model/Code:Duramax LML More details about the engine Duramax LML
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:16:1
Maximum engine speed:3000 rpm.
Performance:
Fuel Type:Diesel
Weight-to-power ratio:7.8 kg/Hp, 128.3 Hp/tonne
Weight-to-torque ratio:3 kg/Nm, 335.2 Nm/tonne
Space:
Kerb Weight:3094
Max. weight:4491
Max load:1397
Trunk (boot) space - maximum:2138 l
Permitted trailer load with brakes (12%):5897 kg
Fuel tank capacity:136 l
Size:
Length:5715 mm mm [615mm less]
Width:2032 mm mm [404mm less]
Height:1971 mm mm [41mm more]
Wheelbase:3369 mm mm [632mm less]
Width including mirrors:2032 mm
Front track:1748 mm
Rear (Back) track:1709 mm
Ride height (ground clearance):231 mm
Minimum turning circle (turning diameter):13.7 m [above average]
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, 350x40 mm [Best for performance and cooling.]
Rear brakesVentilated discs, 360x34 mm [Best for performance and cooling.]
Assisting systemsABS (Anti-lock braking system)
Steering typeCone worm with recirculation balls
Tires size245/75 R17; 265/70 R17; 265/70 R18; 265/60 R20
Wheel rims size7.5J x 17; 8J x 18; 8.5J x 20
Front suspensionIndependent torsion bar, double wishbone
Rear suspensionRigid axle suspension, Leaf spring

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