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Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic

General information
Photo of 2019 - 2021 Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic Pick-up (277 Hp) - technical specs and dimensions
Power 277 Hp @ 3750 rpm.
Torque 623 Nm @ 1500 rpm.
Brand
GMC
Model
Sierra 1500
Generation
Sierra 1500 V (GMTT1XX) Crew Cab Standard Box
Modification (Engine)
AT4 3.0 Duramax TD (277 Hp) 4WD Automatic
Start of production
2019 year
End of production
2021 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 1500 Review

The Gmc Sierra 1500 Sierra 1500 V (GMTT1XX) Crew Cab Short Box (AT4 3.0 Duramax TD (277 Hp) 4WD Automatic) is a Pick-up vehicle that entered production in 2019. Under the hood, it features a 3000 cm3 engine that pushes out 277 Hp @ 3750 rpm.. Technically, the vehicle features a Front, Longitudinal engine placement and is equipped with a 6-cylinder block. It produces a maximum torque of 623 Nm @ 1500 rpm..

The GMC Sierra 1500 AT4 3.0 Duramax TD is a powerhouse of performance, boasting 277 Hp and 623 Nm of torque. With its 4WD automatic transmission, it tackles challenging terrain with ease. The crew cab short box design provides ample space for passengers and cargo. Fuel efficiency is impressive, with 10.7 l/100 km in urban and 9 l/100 km in extra-urban settings. This diesel pick-up combines rugged capability with refined features, making it an ideal choice for those seeking a balance of power and practicality.

📊 Model Comparison AnalysisThis model has **33 Hp** lower power than 2.7 Turbo (310 Hp) 4WD Automatic.
FAQ
How many horsepower does Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic have? +
The Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic model is equipped with an engine producing 277 Hp @ 3750 rpm. total horsepower.
What drivetrain does the Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic have? +
This model transfers power to the road via a All wheel drive (4x4) drivetrain.
Is the Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic a good car? +
Considering the technical specs and market position, the Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic is a highly competitive and desirable model in its class.
Is Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic reliable? +
The Gmc AT4 3.0 Duramax TD (277 Hp) 4WD Automatic is built with high engineering standards and is generally considered a reliable vehicle with proper maintenance.
Performance specs
Fuel consumption (economy) - urban
10.7 l/100 km
Fuel consumption shows how much fuel the car consumes on average per 100 km. Lower figures represent better fuel economy and lower running costs.
Fuel consumption (economy) - extra urban
9 l/100 km
Fuel consumption shows how much fuel the car consumes on average per 100 km. Lower figures represent better fuel economy and lower running costs.
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
8.7 kg/Hp, 114.4 Hp/tonne
Weight-to-torque ratio
3.9 kg/Nm, 257.2 Nm/tonne
Engine specs
Power
277 Hp @ 3750 rpm.
Power per litre
92.3 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
623 Nm @ 1500 rpm.
Torque represents the engine’s rotational force, which determines pulling power. High torque ensures responsive acceleration and stronger uphill performance.
Maximum engine speed
5100 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
LM2
Engine displacement
3000 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
6
Cylinder count represents the number of combustion chambers. More cylinders generally result in smoother operation and a refined engine note.
Engine configuration
Inline
Cylinder bore
84 mm
Piston stroke
90 mm
Compression ratio
15:1
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
DOHC
Engine oil capacity
6.6 l
Coolant
20.7 l
Engine systems
Particulate filter
Space, Volume and weights
Kerb Weight
2422 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. weight
3221 kg
Curb weight is a key parameter affecting fuel consumption, handling agility, acceleration times, and stopping distances.
Max. load
799 kg
Fuel tank capacity
83 l
adblue-tank
20.3 l
Permitted trailer load with brakes (12%)
4037 kg
Dimensions
Length
6128 mm
Width including mirrors
2063 mm
Height
1987 mm
Wheelbase
3989 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
10 gears, automatic transmission
Front suspension
Independent coil spring
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, 330x30 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, 345x20 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
Steering rack and pinion
Power steering
Electric Steering
Tires size
255/70 R17; 265/70 R17
Tire size specifies the tread width, aspect ratio, and rim diameter, affecting the balance between handling grip and ride comfort.
Wheel rims size
8J x 17
Common OBD2 Fault Codes
P0116 🟡 Medium
Coolant Temperature Sensor Range/Performance
Diagnostic Guide
P0117 🟡 Medium
Coolant Temperature Sensor Circuit Low
Diagnostic Guide
P0118 🟡 Medium
Coolant Temperature Sensor Circuit High
Diagnostic Guide
P0120 🔴 High
Throttle/Pedal Position Sensor A Circuit
Diagnostic Guide
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User Reviews
O
Oscar A.
8 days ago
★★★★☆
Perfect size and choice for our small family. Very responsive throttle, makes highway overtaking a breeze. Spacious interior and practical cargo capacity. I highly recommend it, won't disappoint.
N
Noah V.
25 months ago
★★★★★
Perfect size and choice for our small family. Very responsive throttle, makes highway overtaking a breeze. Comfort is top-notch, great seats. If you're undecided, just go for it.
W
William T.
25 weeks ago
★★★★★
Are there any known transmission issues?
N
Noah 88
19 weeks ago
★★★★★
Got this car a few months ago. Engine performance exceeded my expectations. Spacious interior and practical cargo capacity. Planning to keep it for a long time.
L
Leo 88
19 days ago
★★★★★
Decided on this after deep research. The 277 Hp @ 3750 rpm. hp feels powerful on the road. The exterior design looks sharp and modern in person. No regrets so far, extremely happy with my purchase.
O
Oscar X
3 months ago
★★★★☆
Switched from a different brand. Acceleration is punchy and satisfying. The exterior design looks sharp and modern in person. Value for money is unmatched, highly recommended.
J
Jack 95
26 months ago
★★★★☆
Been driving it for 3 months now. The engine is snappy, great response time. The infotainment is fast and lag-free. Definitely a solid choice in this price range.

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