GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) Automatic


Overall Rating

7.8 / 10
Safety N/A / 5
Not Rated
Engine 4.0 / 5
Value 3.5 / 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)

V (GMTT1XX) Double Cab Long Bed Overview:

GMC Sierra 2500HD (V (GMTT1XX) Double Cab Long Bed). With 629 Nm of torque, it offers ample pulling power. At around 2967 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 V8 (401 Hp) Automatic Verdict:

Rating 4 stars

Performance Verdict

Offers identical power output to the 4WD version, delivering strong acceleration and ample power for most heavy-duty tasks. Performance is smooth with the automatic transmission.

Fuel Economy

Similar to the 4WD variant, fuel efficiency is a trade-off for its immense power. Expect high fuel consumption, particularly when working the engine hard.

Best Use Case: Best suited for heavy-duty work primarily on paved roads or in conditions where 4WD is not essential, offering a potentially lighter curb weight and slightly better fuel economy than its 4WD counterpart.

Pros and Cons:

Pros:

  • • Exceptional towing and hauling capabilities with both V8 engines.
  • • Powerful Duramax diesel offers class-leading torque and efficiency under load.
  • • Spacious and well-appointed interior for a heavy-duty truck.
  • • Robust build quality and strong chassis for demanding work.
  • • Advanced trailering technology enhances safety and ease of use.

Cons:

  • • Large size can make maneuvering in urban environments challenging.
  • • Fuel economy, especially with the gasoline V8, is a significant consideration.
  • • Ride quality can be firm, as expected from a heavy-duty truck.
  • • High purchase price and ongoing operational costs.
  • • Limited customization options compared to some competitors.

Specifications:

Specifications are compared to those of the previous generation(IV (GMTK2XX) Crew Cab Long Box: 2017 - 2019).

General:
Brand:GMC
Model:Sierra 2500HD
Generation:V (GMTT1XX) Double Cab Long Bed
Modification (Engine):6.6 V8 (401 Hp) Automatic
Start of production:2020
End of production:2023
Powertrain Architecture:Internal Combustion engine
Body type:Pick-up
Seats:5
Doors:4
Engine:
Engine systems:Start & Stop System
Power:401 Hp @ 5200 rpm. Same horsepower
Torque:629 Nm @ 4000 rpm.
Engine Model/Code:L8T More details about the engine L8T
Number of cylinders:8
Engine configuration:V-engine
Number of valves per cylinder:2
Fuel injection system:Direct injection
Engine aspiration:Naturally aspirated engine
Valvetrain:OHV, VVT
Engine oil capacity:7.6 l
Coolant:14.6 l
Engine layout:Front, Longitudinal
Cylinder Bore:103.25 mm mm
Piston Stroke:98 mm mm
Compression ratio:10.8:1
Performance:
Fuel Type:Petrol (Gasoline)
Weight-to-power ratio:7.4 kg/Hp, 135.2 Hp/tonne
Weight-to-torque ratio:4.7 kg/Nm, 212 Nm/tonne
Space:
Kerb Weight:2967
Max. weight:4627
Max load:1660
Permitted trailer load with brakes (12%):6577 kg
Fuel tank capacity:136 l
Size:
Length:6514 mm mm [49mm less]
Width:2079 mm mm [34mm more]
Height:2027 mm mm [47mm more]
Wheelbase:4127 mm mm [131mm less]
Width including mirrors:2079 mm
Front track:1731 mm
Rear (Back) track:1736 mm
Ride height (ground clearance):258 mm
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) drives the rear wheels of the vehicle.
Drive wheelRear wheel drive
Number of gears6
Transmission typeAutomatic
Gearbox typeHydra-Matic
Front brakesVentilated discs, 355x40 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
Power steeringHydraulic Steering
Tires size265/70 R17; 245/75 R17; 275/70 R18
Wheel rims size7.5J x 17; 8J x 18
Front suspensionCoil spring, Double wishbone, Transverse stabilizer
Rear suspensionRigid axle suspension, Leaf spring

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