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 2500HD
|
| Generation |
Sierra 2500HD V (GMTT1XX) Double Cab Long 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 |
7.7 kg/Hp, 129.4 Hp/tonne
|
| Weight-to-torque ratio |
4.9 kg/Nm, 203 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
|
| Engine systems |
Start & Stop System
|
Space, Volume and weights
| Kerb Weight |
3098 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
|
|---|---|
| Max. weight |
4763 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
|
| Max. load |
1665 kg
|
| Fuel tank capacity |
136 l
|
| Permitted trailer load with brakes (12%) |
6577 kg
|
Dimensions
| Length |
6514 mm
|
|---|---|
| Width including mirrors |
2079 mm
|
| Height |
2027 mm
|
| Wheelbase |
4127 mm
|
| Front track |
1731 mm
|
| Rear / Back Track |
1736 mm
|
| Ride height (ground clearance) |
258 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
J
Jack M.
5 weeks ago
★★★★★
Does anyone experience any rattles or squeaks over time?
•
T
Thomas Z.
4 months ago
★★★★★
Just picked mine up last week! Very responsive throttle, makes highway overtaking a breeze. Sound insulation is great, very quiet cabin at high speeds. Planning to keep it for a long time.
•
W
William 95
16 days ago
★★★★☆
Are there any known transmission issues?
•
L
Leo 90
12 days ago
★★★★★
Perfect size and choice for our small family. The 401 Hp @ 5200 rpm. hp feels more than enough for daily driving. The handling in corners is very safe. Worth every single penny spent.
•
J
James A.
12 weeks ago
★★★★★
Perfect size and choice for our small family. Very responsive throttle, makes highway overtaking a breeze. Sound insulation is great, very quiet cabin at high speeds. Planning to keep it for a long time.
•
H
Harry M.
16 days ago
★★★★★
Anyone knows the real-world N/A usage?
•