GMC Sierra 2500HD IV (GMTK2XX) Crew Cab Long Box 6.6 Duramax TD V8 (445 Hp) 4WD Automatic


Overall Rating

8.2 / 10
Safety N/A / 5
Not Rated
Engine 4.5 / 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)

IV (GMTK2XX) Crew Cab Long Box Overview:

GMC Sierra 2500HD (IV (GMTK2XX) Crew Cab Long Box). With 1234 Nm of torque, it offers ample pulling power. At around 3456 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 (445 Hp) 4WD Automatic Verdict:

Rating 5 stars

Performance Verdict

Significantly improved power and torque over the earlier Duramax, offering best-in-class towing and hauling with robust 4WD for ultimate capability.

Fuel Economy

Excellent fuel economy for its power output and class, especially considering the heavy-duty nature and 4WD system.

Best Use Case: Max-capacity towing, extreme off-road or job site demands, and premium heavy-duty performance requirements.

Pros and Cons:

Pros:

  • • Exceptional towing and hauling capabilities, especially with Duramax diesel engines.
  • • Wide range of powerful engine options including diesel, gasoline, and CNG.
  • • Durable and robust construction built for heavy-duty work.
  • • Spacious and functional Crew Cab interior.
  • • Strong resale value for well-maintained models.

Cons:

  • • Gasoline engine fuel economy can be poor, especially under load.
  • • Ride quality can be stiff when unladen, typical for heavy-duty trucks.
  • • Large size can make maneuvering in urban environments challenging.
  • • Limited advanced driver-assistance systems compared to modern vehicles.
  • • CNG infrastructure can be scarce in some regions.

Specifications:

Specifications are compared to those of the previous generation(IV (GMTK2XX) Crew Cab Long Box: 2015 - 2017).

General:
Brand:GMC
Model:Sierra 2500HD
Generation:IV (GMTK2XX) Crew Cab Long Box
Modification (Engine):6.6 Duramax TD V8 (445 Hp) 4WD Automatic
Start of production:2017
End of production:2019
Powertrain Architecture:Internal Combustion engine
Body type:Pick-up
Seats:5
Doors:4
Engine:
Engine systems:Particulate filter
Power:445 Hp @ 2800 rpm. Same horsepower
Power per litre:67.5 Hp/l [Same length.]
Torque:1234 Nm @ 1600 rpm.
Engine Model/Code:Duramax L5P More details about the engine Duramax L5P
Engine displacement:6588
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:29.7 l
Engine layout:Front, Longitudinal
Cylinder Bore:103 mm mm
Piston Stroke:99 mm mm
Compression ratio:16:1
Performance:
Fuel Type:Diesel
Weight-to-power ratio:7.8 kg/Hp, 128.8 Hp/tonne
Weight-to-torque ratio:2.8 kg/Nm, 357.1 Nm/tonne
Space:
Kerb Weight:3456
Max. weight:4536
Max load:1080
Trunk (boot) space - maximum:2162 l
Permitted trailer load with brakes (12%):6577 kg
Fuel tank capacity:136 l
Size:
Length:6563 mm mm [Same length.]
Width:2045 mm mm [Same width.]
Height:1980 mm mm [1mm less]
Wheelbase:4258 mm mm [Same wheelbase.]
Width including mirrors:2045 mm
Front track:1748 mm
Rear (Back) track:1709 mm
Minimum turning circle (turning diameter):17.1 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 size235/80 R17; 265/70 R18; 265/60 R20
Wheel rims size7.5J x 17; 8J x 18; 8.5J x 20
Front suspensionCoil spring, Double wishbone, Transverse stabilizer
Rear suspensionRigid axle suspension, Leaf spring

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