Brands Compare VIN Decoder OBD2 Blog
🇬🇧 English 🇹🇷 Türkçe 🇩🇪 Deutsch 🇫🇷 Français 🇪🇸 Español 🇮🇹 Italiano

Gmc 6.6 Duramax TD V8 (365 Hp) Automatic

General information
Photo of 2007 - 2010 Gmc 6.6 Duramax TD V8 (365 Hp) Automatic Pick-up (365 Hp) - technical specs and dimensions
Power 365 Hp @ 3200 rpm.
Torque 895 Nm @ 1600 rpm.
Brand
GMC
Model
Sierra 2500HD
Generation
Sierra 2500HD III (GMT900) Extended Cab Standard Box
Modification (Engine)
6.6 Duramax TD V8 (365 Hp) Automatic
Start of production
2007 year
End of production
2010 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
2
Door count indicates the total number of entry points for passengers and cargo access (e.g., 3-door, 5-door).

Gmc Sierra 2500HD Review

Introduced in 2007, the Gmc Sierra 2500HD (generation Sierra 2500HD III (GMT900) Regular Cab Long Box) is a classic Pick-up offering the 6.6 Duramax TD V8 (365 Hp) Automatic specification. Its propulsion comes from a 6599 cm3 setup, generating a respectable 365 Hp @ 3200 rpm.. Featuring Turbocharger, Intercooler aspiration, it produces a peak torque of 895 Nm @ 1600 rpm. for robust performance. The specific output is rated at 55.3 Hp/l per litre.

Introduced in 2007 - 2010, the Gmc 6.6 Duramax TD V8 (365 Hp) Automatic brings a high level of engineering and build quality to its segment. This version boasts a robust powertrain under the hood, producing a total of 365 Hp @ 3200 rpm.. Compared to its competitors, it stands out in ergonomics and dynamics. Whether for performance or efficiency, this model remains a successful example in today's market.
📊 Model Comparison AnalysisThis model delivers **+5 Hp** more power compared to its sibling 6.0 V8 (360 Hp) 4WD Automatic.
FAQ
How many horsepower does Gmc 6.6 Duramax TD V8 (365 Hp) Automatic have? +
The Gmc 6.6 Duramax TD V8 (365 Hp) Automatic model is equipped with an engine producing 365 Hp @ 3200 rpm. total horsepower.
What drivetrain does the Gmc 6.6 Duramax TD V8 (365 Hp) Automatic have? +
This model transfers power to the road via a Rear wheel drive drivetrain.
Is the Gmc 6.6 Duramax TD V8 (365 Hp) Automatic a good car? +
Considering the technical specs and market position, the Gmc 6.6 Duramax TD V8 (365 Hp) Automatic is a highly competitive and desirable model in its class.
Is Gmc 6.6 Duramax TD V8 (365 Hp) Automatic reliable? +
The Gmc 6.6 Duramax TD V8 (365 Hp) 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
7.8 kg/Hp, 128 Hp/tonne
Weight-to-torque ratio
3.2 kg/Nm, 313.9 Nm/tonne
Engine specs
Power
365 Hp @ 3200 rpm.
Power per litre
55.3 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
895 Nm @ 1600 rpm.
Torque represents the engine’s rotational force, which determines pulling power. High torque ensures responsive acceleration and stronger uphill performance.
Maximum engine speed
3450 rpm.
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 LMM
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
16.8:1
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
24 l
Engine systems
Particulate filter
Space, Volume and weights
Kerb Weight
2851 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. weight
4173 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. load
1322 kg
Trunk (boot) space - maximum
1718 l
Fuel tank capacity
98 l
Permitted trailer load with brakes (12%)
5897 kg
Dimensions
Length
5850 mm
Width including mirrors
2032 mm
Height
1951 mm
Wheelbase
3645 mm
Front track
1744 mm
Rear / Back Track
1676 mm
Ride height (ground clearance)
243 mm
Minimum turning circle (turning diameter)
14.5 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
Independent torsion bar, double wishbone
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, 325x38 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, 325x30 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
245/75 R16; 265/75 R17
Tire size specifies the tread width, aspect ratio, and rim diameter, affecting the balance between handling grip and ride comfort.
Wheel rims size
6.5J x 16; 7.5J x 17
Common OBD2 Fault Codes
U0246 🟡 Medium
Lost Communication with Door/Seat Module U0246
Diagnostic Guide
U0248 🟡 Medium
Lost Communication with Door/Seat Module U0248
Diagnostic Guide
U0250 🟡 Medium
Lost Communication with Door/Seat Module U0250
Diagnostic Guide
U0252 🟡 Medium
Lost Communication with Door/Seat Module U0252
Diagnostic Guide
Similar Models
Gmc Sierra 2500HD 6.6 V8 (401 Hp) Automatic
Gmc Sierra 2500HD
6.6 V8 (401 Hp) Automatic
Gmc Sierra 2500HD 6.6 Duramax TD V8 (470 Hp) Automatic
Gmc Sierra 2500HD
6.6 Duramax TD V8 (470 Hp) Automatic
Gmc Sierra 2500HD 6.6 Duramax TD V8 (470 Hp) 4WD Automatic
Gmc Sierra 2500HD
6.6 Duramax TD V8 (470 Hp) 4WD Automatic
Gmc Sierra 2500HD 6.6 V8 (401 Hp) Automatic
Gmc Sierra 2500HD
6.6 V8 (401 Hp) Automatic
User Reviews
H
Harry T.
20 weeks ago
★★★★★
Finally got the keys today. The engine is snappy, great response time. Spacious interior and practical cargo capacity. If you are thinking about buying one, go test drive it.
W
William 92
2 months ago
★★★★☆
Perfect size and choice for our small family. The engine is snappy, great response time. Sound insulation is great, very quiet cabin at high speeds. Worth every single penny spent.
O
Oscar V.
11 months ago
★★★★★
Mainly using it for my daily commute to work. N/A economy is better than I expected. Spacious interior and practical cargo capacity. No regrets so far, extremely happy with my purchase.
J
James S.
18 months ago
★★★★★
Mainly using it for my daily commute to work. The 365 Hp @ 3200 rpm. hp feels more than enough for daily driving. Spacious interior and practical cargo capacity. Definitely a solid choice in this price range.

Leave a Review