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Gmc 6.6 Duramax TD V8 (397 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 IV (GMTK2XX) Regular Cab Long Box
Modification (Engine)
6.6 Duramax TD V8 (445 Hp) 4WD DRW Automatic
Start of production
2017 year
End of production
2019 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 III (GMT900, facelift 2011) Crew Cab Long Box (6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic) has been in production since 2017. 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.

Introduced in 2015 - 2017, the Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic brings a high level of engineering and build quality to its segment. The motor is capable of generating 445 Hp @ 2800 rpm. at its peak. Compared to its competitors, it stands out in ergonomics and dynamics. Ultimately, the Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic offers a desirable option through both design and engineering.
📊 Model Comparison AnalysisThis model delivers **+144 Hp** more power compared to its sibling 6.0 V8 (301 Hp) 4WD Automatic CNG. This model delivers **+85 Hp** more power compared to its sibling 6.0 V8 (301 Hp) Automatic CNG.
FAQ
How many horsepower does Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic have? +
The Gmc 6.6 Duramax TD V8 (397 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 (397 Hp) 4WD SRW Automatic have? +
This model transfers power to the road via a All wheel drive (4x4) drivetrain.
Is the Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic a good car? +
Considering the technical specs and market position, the Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic is a highly competitive and desirable model in its class.
Is Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic reliable? +
The Gmc 6.6 Duramax TD V8 (397 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, 131.1 Hp/tonne
Weight-to-torque ratio
2.8 kg/Nm, 363.6 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
29.7 l
Engine systems
Particulate filter
Space, Volume and weights
Kerb Weight
3394 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. weight
5908 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. load
2514 kg
Trunk (boot) space - maximum
2162 l
Fuel tank capacity
136 l
Permitted trailer load with brakes (12%)
9072 kg
Dimensions
Length
5699 mm
Width including mirrors
2438 mm
Height
1967 mm
Wheelbase
3393 mm
Front track
1748 mm
Rear / Back Track
1906 mm
Minimum turning circle (turning diameter)
14 m
Drivetrain, brakes and suspension specs
Drivetrain Architecture
The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary.
Drivetrain type specifies which wheels receive power from the engine. This affects road grip, cornering, and stability on slippery surfaces.
Drive wheel
All wheel drive (4x4)
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
6 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, 355x40 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
Cone worm with recirculation balls
Tires size
235/80 R17; 265/70 R18
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
Common OBD2 Fault Codes
P1226 🔴 High
Manufacturer Specific Engine Fault Code P1226
Diagnostic Guide
P1228 🔴 High
Manufacturer Specific Engine Fault Code P1228
Diagnostic Guide
P1230 🔴 High
Manufacturer Specific Engine Fault Code P1230
Diagnostic Guide
P1232 🔴 High
Manufacturer Specific Engine Fault Code P1232
Diagnostic Guide
Similar Models
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Gmc Sierra 3500HD 6.6 V8 (401 Hp) 4WD DRW Automatic
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Gmc Sierra 3500HD 6.6 Duramax TD V8 (470 Hp) SRW Automatic
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User Reviews
O
Oscar V.
19 days ago
★★★★★
Been driving it for 3 months now. The 445 Hp @ 2800 rpm. hp feels more than enough for daily driving. The infotainment is fast and lag-free. No regrets so far, extremely happy with my purchase.
N
Noah 90
6 days ago
★★★★★
Mainly using it for my daily commute to work. The 445 Hp @ 2800 rpm. hp feels powerful on the road. Spacious interior and practical cargo capacity. Definitely a solid choice in this price range.
H
Harry 84
2 months ago
★★★★★
Bought a used model in great condition last year. The 445 Hp @ 2800 rpm. hp feels powerful on the road. The handling in corners is very safe. Planning to keep it for a long time.
J
Jack 84
20 days ago
★★★★★
Anyone knows the real-world N/A usage?

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