Gmc 6.6 Duramax TD V8 (445 Hp) Automatic
General information
No photo
| Power | 401 Hp @ 5200 rpm. |
|---|---|
| Torque | 629 Nm @ 4000 rpm. |
| Brand |
GMC
|
|---|---|
| Model |
Sierra 3500HD
|
| Generation |
Sierra 3500HD V (GMTT1XX) Crew Cab Standard Bed
|
| Modification (Engine) |
6.6 V8 (401 Hp) 4WD 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 |
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).
|
FAQ
Performance specs
| Fuel Type |
Petrol (Gasoline)
Fuel type defines the primary source of energy required by the vehicle’s engine (petrol, diesel, electricity, hybrid, LPG, etc.).
|
|---|---|
| Weight-to-power ratio |
7.9 kg/Hp, 127.3 Hp/tonne
|
| Weight-to-torque ratio |
5 kg/Nm, 199.6 Nm/tonne
|
Engine specs
| Power |
401 Hp @ 5200 rpm.
|
|---|---|
| Torque |
629 Nm @ 4000 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 |
L8T
|
| 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 |
103.25 mm
|
| Piston stroke |
98 mm
|
| Compression ratio |
10.8:1
|
| Number of valves per cylinder |
2
Valves per cylinder control the airflow into and exhaust out of the engine. More valves improve high-RPM breathing and performance.
|
| Fuel injection system |
Direct injection
|
| Engine aspiration |
Naturally aspirated engine
Aspiration describes how the engine draws air into its cylinders, distinguishing naturally aspirated setups from turbochargers or superchargers.
|
| Valvetrain |
OHV, VVT
|
| Engine oil capacity |
7.6 l
|
| Coolant |
14.6 l
|
Space, Volume and weights
| Kerb Weight |
3151 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
|
|---|---|
| Max. weight |
5148 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
|
| Max. load |
1997 kg
|
| Fuel tank capacity |
136 l
|
| Permitted trailer load with brakes (12%) |
6577 kg
|
Dimensions
| Length |
6352 mm
|
|---|---|
| Width including mirrors |
2079 mm
|
| Height |
2054 mm
|
| Wheelbase |
4037 mm
|
| Front track |
1731 mm
|
| Rear / Back Track |
1736 mm
|
| Ride height (ground clearance) |
284 mm
|
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 Hydra-Matic
|
| 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, 360x34 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
|
| Power steering |
Hydraulic Steering
|
| Tires size |
265/70 R17; 245/75 R17; 275/70 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
Similar Models
User Reviews
W
William K.
9 months ago
★★★★★
Mainly using it for my daily commute to work. The 401 Hp @ 5200 rpm. hp feels more than enough for daily driving. The handling in corners is very safe. I highly recommend it, won't disappoint.
•
H
Henry 88
5 weeks ago
★★★★☆
Anyone knows the real-world N/A usage?
•
O
Oscar S.
12 months ago
★★★★★
Bought a used model in great condition last year. The 401 Hp @ 5200 rpm. hp feels powerful on the road. Sound insulation is great, very quiet cabin at high speeds. No regrets so far, extremely happy with my purchase.
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