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


Overall Rating

8.5 / 10
Safety N/A / 5
Not Rated
Engine 4.8 / 5
Value 4.0 / 5
Performance 4.5 / 5
Comfort 3.8 / 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) Double Cab Long Box Overview:

GMC Sierra 2500HD (IV (GMTK2XX) Double Cab Long Box). With 1234 Nm of torque, it offers ample pulling power. At around 2812 kg, it’s on the heavier side. Rear‑wheel drive offers dynamic handling and sporty feedback. 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) Automatic Verdict:

Rating 5 stars

Performance Verdict

Outstanding power and torque for the most demanding tasks, with smooth and robust RWD delivery for maximum payload and towing on paved surfaces.

Fuel Economy

Excellent fuel efficiency for a heavy-duty diesel, providing strong performance without excessive consumption for its class.

Best Use Case: Maximum towing and hauling on paved roads, heavy commercial transport, long-haul applications, and high-performance work.

Pros and Cons:

Pros:

  • • Exceptional towing and hauling capabilities, especially with Duramax diesel
  • • Powerful and reliable Duramax diesel engine options
  • • Robust and durable construction designed for heavy work
  • • Comfortable and well-appointed interior for a heavy-duty truck
  • • Available advanced safety features for its time

Cons:

  • • Large size can be challenging to maneuver and park in urban environments
  • • Fuel economy for gasoline models is significantly lower than diesel
  • • Higher purchase price for diesel variants and top trims
  • • Ride quality can be stiff when the truck is unloaded
  • • Limited Euro NCAP safety data due to its market focus

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) Double Cab Long Box
Modification (Engine):6.6 Duramax TD V8 (445 Hp) 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:67.4 Hp/l [241mm less]
Torque:1234 Nm @ 1600 rpm.
Engine Model/Code:Duramax L5P More details about the engine Duramax L5P
Engine displacement:6604
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:6.3 kg/Hp, 158.3 Hp/tonne
Weight-to-torque ratio:2.3 kg/Nm, 438.8 Nm/tonne
Space:
Kerb Weight:2812
Max. weight:4309
Max load:1497
Trunk (boot) space - maximum:2162 l
Permitted trailer load with brakes (12%):6577 kg
Fuel tank capacity:136 l
Size:
Length:6322 mm mm [241mm less]
Width:2045 mm mm [Same width.]
Height:1978 mm mm [3mm less]
Wheelbase:4017 mm mm [241mm less]
Width including mirrors:2045 mm
Front track:1748 mm
Rear (Back) track:1709 mm
Minimum turning circle (turning diameter):16.2 m [above average]
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) drives the rear wheels of the vehicle.
Drive wheelRear wheel drive
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 suspensionCoil spring, Double wishbone, Transverse stabilizer
Rear suspensionRigid axle suspension, Leaf spring

Behind the wheel of the GMC Sierra 2500HD. How does it handle on the road?