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Specs of GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) 4WD Automatic /2020, 2021, 2022, 2023/

Key specs

GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) 4WD Automatic /Pick-up 2020 - 2023/

What is the body type of GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed?
Pick-up, 4 Doors, 5 Seats
What is the power output of GMC Sierra 2500HD Pick-up 2020 6.6 V8 (401 Hp) 4WD Automatic?
401 Hp, 629 Nm
464 lb.-ft.
What is the number of cylinders in 2020 GMC 6.6 V8 (401 Hp) 4WD Automatic?
8, V-engine
What is the drivetrain of GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed Pick-up 2020 6.6 V8 (401 Hp) 4WD Automatic?
All wheel drive (4x4). Internal Combustion engine. 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.
What is the length of 2020 GMC Sierra 2500HD Pick-up?
6514 mm
256.46 in.
What is the width of 2020 GMC Sierra 2500HD Pick-up?
2079 mm
81.85 in.
What is the kerb weight of 2020 GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) 4WD Automatic?
3098 kg
6830 lbs.
What is the maximum permissible mass of 2020 GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) 4WD Automatic?
4763 kg
10501 lbs.
What are the number of gears and the gearbox type of 2020 GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 V8 (401 Hp) 4WD Automatic?
6, automatic transmission Hydra-Matic
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General information

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
End of production
2023
Powertrain Architecture
Internal Combustion engine
Body type
Pick-up
Seats
5
Doors
4
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Performance specs

Fuel Type
Petrol (Gasoline)
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. 464 lb.-ft. @ 4000 rpm.
Engine layout
Front, Longitudinal
Engine Model/Code
L8T
Number of cylinders
8
Engine configuration
V-engine
Cylinder Bore
103.25 mm 4.06 in.
Piston Stroke
98 mm 3.86 in.
Compression ratio
10.8:1
Number of valves per cylinder
2
Fuel injection system
Direct injection
Engine aspiration
Naturally aspirated engine
Valvetrain
OHV, VVT
Engine oil capacity
7.6 l 8.03 US qt | 6.69 UK qt
Engine oil specification
Log in to see.Log in to see.
Coolant
14.6 l 15.43 US qt | 12.85 UK qt
Engine systems
Start & Stop System

Volume and weights

Kerb Weight
3098 kg 6830 lbs.
Max. weight
4763 kg 10501 lbs.
Max load
1665 kg 3671 lbs.
Fuel tank capacity
136 l 35.93 US gal | 29.92 UK gal
Permitted trailer load with brakes (12%)
6577 kg 14500 lbs.

Dimensions

Length
6514 mm 256.46 in.
Width including mirrors
2079 mm 81.85 in.
Height
2027 mm 79.8 in.
Wheelbase
4127 mm 162.48 in.
Front track
1731 mm 68.15 in.
Rear (Back) track
1736 mm 68.35 in.
Ride height (ground clearance)
258 mm 10.16 in.

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.
Drive wheel
All wheel drive (4x4)
Number of gears and type of gearbox
6 gears, automatic transmission Hydra-Matic
Front suspension
Coil spring, Double wishbone, Anti-roll bar
Rear suspension
Rigid axle suspension, Leaf spring
Front brakes
Ventilated discs, 355x40 mm
Rear brakes
Ventilated discs, 360x34 mm
Assisting systems
ABS (Anti-lock braking system)
Steering type
Recirculating-ball steering
Power steering
Hydraulic Steering
Tire size
265/70 R17; 245/75 R17; 275/70 R18
Wheel rim size
7.5J x 17; 8J x 18