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Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic

General information
No photo
Power 397 Hp @ 3000 rpm.
Torque 1037 Nm @ 1600 rpm.
Brand
GMC
Model
Sierra 3500HD
Generation
Sierra 3500HD IV (GMTK2XX) Crew Cab Standard Box
Modification (Engine)
6.6 Duramax TD V8 (397 Hp) SRW Automatic
Start of production
2015 year
End of production
2017 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
5
Seat count specifies the maximum passenger capacity the vehicle is legally approved to transport at once.
Doors
4
Door count indicates the total number of entry points for passengers and cargo access (e.g., 3-door, 5-door).

Gmc Sierra 3500HD Review

Introduced in 2015, the Gmc Sierra 3500HD (generation Sierra 3500HD IV (GMTK2XX) Double Cab Long Box) is a classic Pick-up offering the 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic specification. Its propulsion comes from a 6599 cm3 setup, generating a respectable 397 Hp @ 3000 rpm.. Featuring Turbocharger, Intercooler aspiration, it produces a peak torque of 1037 Nm @ 1600 rpm. for robust performance. The specific output is rated at 60.2 Hp/l per litre.

The Gmc 6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic entered the market in 2015 - 2017, aiming to set new benchmarks through its design and technical capabilities. This version boasts a robust powertrain under the hood, producing a total of 397 Hp @ 3000 rpm.. This vehicle satisfies expectations in both city and highway driving. Whether for performance or efficiency, this model remains a successful example in today's market.
📊 Model Comparison AnalysisThis model delivers **+96 Hp** more power compared to its sibling 6.0 V8 (301 Hp) 4WD Automatic CNG. This model delivers **+37 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 397 Hp @ 3000 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 Rear wheel drive 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
8.1 kg/Hp, 123.4 Hp/tonne
Weight-to-torque ratio
3.1 kg/Nm, 322.2 Nm/tonne
Engine specs
Power
397 Hp @ 3000 rpm.
Power per litre
60.2 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
1037 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 LML
Engine displacement
6599 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
22.4 l
Engine systems
Particulate filter
Space, Volume and weights
Kerb Weight
3218 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. weight
5035 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. load
1817 kg
Trunk (boot) space - maximum
1728 l
Fuel tank capacity
136 l
Permitted trailer load with brakes (12%)
5897 kg
Dimensions
Length
6083 mm
Width including mirrors
2045 mm
Height
1990 mm
Wheelbase
3904 mm
Front track
1748 mm
Rear / Back Track
1709 mm
Minimum turning circle (turning diameter)
15.8 m
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
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, 373x34 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
P1188 🔴 High
Manufacturer Specific Engine Fault Code P1188
Diagnostic Guide
P1190 🔴 High
Manufacturer Specific Engine Fault Code P1190
Diagnostic Guide
P1192 🔴 High
Manufacturer Specific Engine Fault Code P1192
Diagnostic Guide
P1194 🔴 High
Manufacturer Specific Engine Fault Code P1194
Diagnostic Guide
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User Reviews
O
Oliver A.
9 months ago
★★★★★
How is the long-term reliability of this model?
A
Arthur V.
16 weeks ago
★★★★☆
Perfect size and choice for our small family. The 397 Hp @ 3000 rpm. hp feels more than enough for daily driving. Spacious interior and practical cargo capacity. If you are thinking about buying one, go test drive it.
W
William M.
27 months ago
★★★☆☆
How is the long-term reliability of this model?
A
Arthur 95
6 months ago
★★★★☆
Decided on this after deep research. The 397 Hp @ 3000 rpm. hp feels powerful on the road. The handling in corners is very safe. If you are thinking about buying one, go test drive it.
N
Noah A.
9 weeks ago
★★★★★
Finally got the keys today. The 397 Hp @ 3000 rpm. hp feels powerful on the road. The handling in corners is very safe. Definitely a solid choice in this price range.
J
Jack 90
22 months ago
★★★★★
Finally got the keys today. The 397 Hp @ 3000 rpm. hp feels more than enough for daily driving. Suspension handles bumps and rough roads very smoothly. Definitely a solid choice in this price range.
T
Thomas 84
18 weeks ago
★★★★★
Perfect size and choice for our small family. The 397 Hp @ 3000 rpm. hp feels more than enough for daily driving. The infotainment is fast and lag-free. If you are thinking about buying one, go test drive it.

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