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Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic

General information
No photo
Power 445 Hp @ 2800 rpm.
Torque 1234 Nm @ 1600 rpm.
Brand
GMC
Model
Sierra 3500HD
Generation
Sierra 3500HD V (GMTT1XX) Regular Cab Long Bed
Modification (Engine)
6.6 Duramax TD V8 (445 Hp) DRW Automatic
Start of production
2020 year
End of production
2023 year
Powertrain Architecture
Internal Combustion engine
Powertrain architecture classifies the propulsion technology of the vehicle, such as internal combustion, electric (BEV), or hybrid.
Body type
Pick-up
Body type refers to the structural design and shape of the vehicle (such as Sedan, Hatchback, SUV, or Coupe).
Seats
2
Seat count specifies the maximum passenger capacity the vehicle is legally approved to transport at once.
Doors
2
Door count indicates the total number of entry points for passengers and cargo access (e.g., 3-door, 5-door).

Gmc Sierra 3500HD Review

As a Pick-up model, the Gmc Sierra 3500HD Sierra 3500HD IV (GMTK2XX) Crew Cab Long Box (6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic) has been in production since 2020. The heart of the vehicle is a 6604 cm3 internal combustion engine producing 445 Hp @ 2800 rpm.. The specific power of 67.4 Hp/l highlights the efficiency of this engine setup. The power is delivered smoothly across 8 cylinders.

The Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic entered the market in 2020 - 2023, aiming to set new benchmarks through its design and technical capabilities. At its core, the vehicle features a performance-oriented engine delivering 445 Hp @ 2800 rpm. of power. It demonstrates a steady character and inspires confidence through its handling. With its timeless design, this version maintains a popular profile according to CarWiki.
FAQ
How many horsepower does Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic have? +
The Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic model is equipped with an engine producing 445 Hp @ 2800 rpm. total horsepower.
What drivetrain does the Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic have? +
This model transfers power to the road via a Rear wheel drive drivetrain.
Is the Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic a good car? +
Considering the technical specs and market position, the Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic is a highly competitive and desirable model in its class.
Is Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic reliable? +
The Gmc 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic is built with high engineering standards and is generally considered a reliable vehicle with proper maintenance.
Performance specs
Fuel Type
Diesel
Fuel type defines the primary source of energy required by the vehicle’s engine (petrol, diesel, electricity, hybrid, LPG, etc.).
Weight-to-power ratio
7.6 kg/Hp, 131.9 Hp/tonne
Weight-to-torque ratio
2.7 kg/Nm, 365.7 Nm/tonne
Engine specs
Power
445 Hp @ 2800 rpm.
Power per litre
67.4 Hp/l
Power per litre (specific power) measures the engine power relative to its displacement. A higher value indicates advanced efficiency and engineering quality.
Torque
1234 Nm @ 1600 rpm.
Torque represents the engine’s rotational force, which determines pulling power. High torque ensures responsive acceleration and stronger uphill performance.
Engine layout
Front, Longitudinal
Engine layout defines the position and alignment of the engine block. This layout affects the car’s weight distribution, handling, and interior cabin space.
Engine Model Code
Duramax L5P
Engine displacement
6604 cm3
Engine displacement represents the combined volume of all cylinders. It is a direct indicator of engine size and baseline performance potential.
Number of cylinders
8
Cylinder count represents the number of combustion chambers. More cylinders generally result in smoother operation and a refined engine note.
Engine configuration
V-engine
Cylinder bore
103 mm
Piston stroke
99 mm
Compression ratio
16:1
Number of valves per cylinder
4
Valves per cylinder control the airflow into and exhaust out of the engine. More valves improve high-RPM breathing and performance.
Fuel injection system
Diesel Commonrail
Engine aspiration
Turbocharger, Intercooler
Aspiration describes how the engine draws air into its cylinders, distinguishing naturally aspirated setups from turbochargers or superchargers.
Valvetrain
OHV
Engine oil capacity
9.5 l
Coolant
29.1 l
Engine systems
Particulate filter
Space, Volume and weights
Kerb Weight
3374 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. weight
6350 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. load
2976 kg
Fuel tank capacity
106 l
Permitted trailer load with brakes (12%)
9072 kg
Dimensions
Length
5982 mm
Width including mirrors
2457 mm
Height
2038 mm
Wheelbase
3595 mm
Front track
1731 mm
Rear / Back Track
1905 mm
Ride height (ground clearance)
266 mm
Drivetrain, brakes and suspension specs
Drivetrain Architecture
The Internal combustion engine (ICE) drives the rear wheels of the vehicle.
Drivetrain type specifies which wheels receive power from the engine. This affects road grip, cornering, and stability on slippery surfaces.
Drive wheel
Rear wheel drive
Drivetrain type specifies which wheels receive power from the engine. This affects road grip, cornering, and stability on slippery surfaces.
Number of gears and type of gearbox
10 gears, automatic transmission Allison
Front suspension
Coil spring, Double wishbone, Transverse stabilizer
The suspension system absorbs road bumps, providing cabin comfort and keeping tires firmly planted on the road surface.
Rear suspension
Rigid axle suspension, Leaf spring
The suspension system absorbs road bumps, providing cabin comfort and keeping tires firmly planted on the road surface.
Front brakes
Ventilated discs, 350x40 mm
The brake system is a vital safety component that uses friction to slow down or bring the vehicle to a complete stop.
Rear brakes
Ventilated discs, 355x40 mm
The brake system is a vital safety component that uses friction to slow down or bring the vehicle to a complete stop.
Assisting systems
ABS (Anti-lock braking system)
Steering type
Steering rack and pinion
Power steering
Electric Steering
Tires size
235/80 R17; 265/70 R17; 245/75 R17; 265/70 R18; 265/60 R20
Tire size specifies the tread width, aspect ratio, and rim diameter, affecting the balance between handling grip and ride comfort.
Wheel rims size
7.5J x 17; 8J x 18; 8.5J x 20
Common OBD2 Fault Codes
P1154 🔴 High
Manufacturer Specific Engine Fault Code P1154
Diagnostic Guide
P1156 🔴 High
Manufacturer Specific Engine Fault Code P1156
Diagnostic Guide
P1158 🔴 High
Manufacturer Specific Engine Fault Code P1158
Diagnostic Guide
P1160 🔴 High
Manufacturer Specific Engine Fault Code P1160
Diagnostic Guide
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User Reviews
H
Harry S.
25 weeks ago
★★★★★
Ordered it immediately after a quick test drive. The 445 Hp @ 2800 rpm. hp feels more than enough for daily driving. Spacious interior and practical cargo capacity. Definitely a solid choice in this price range.
N
Noah 84
3 months ago
★★★★★
Finally got the keys today. Acceleration is punchy and satisfying. The exterior design looks sharp and modern in person. Definitely a solid choice in this price range.
J
James 84
18 months ago
★★★★★
Ordered it immediately after a quick test drive. N/A economy is better than I expected. The infotainment is fast and lag-free. Worth every single penny spent.

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