Home >> Car catalog >> GMC >> Sierra 2500HD >> Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed >> 6.6 V8 (401 Hp) 4WD Automatic
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Specs of GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) 4WD Automatic /2023, 2024, 2025, 2026/

Key specs

GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) 4WD Automatic /Pick-up 2023 - /

What is the body type of GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed?
Pick-up, 4 Doors, 5 Seats
What is the power output of GMC Sierra 2500HD Pick-up 2023 6.6 V8 (401 Hp) 4WD Automatic?
401 Hp, 629 Nm
464 lb.-ft.
What is the number of cylinders in 2023 GMC 6.6 V8 (401 Hp) 4WD Automatic?
8, V-engine
What is the drivetrain of GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed Pick-up 2023 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 2023 GMC Sierra 2500HD Pick-up?
6127 mm
241.22 in.
What is the width of 2023 GMC Sierra 2500HD Pick-up?
2079 mm
81.85 in.
What is the kerb weight of 2023 GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) 4WD Automatic?
3143 kg
6929 lbs.
What is the maximum permissible mass of 2023 GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) 4WD Automatic?
4695 kg
10351 lbs.
What are the number of gears and the gearbox type of 2023 GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) 4WD Automatic?
10, automatic transmission Allison
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General information

Brand
GMC
Model
Sierra 2500HD
Generation
Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed
Modification (Engine)
6.6 V8 (401 Hp) 4WD Automatic
Start 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
7.8 kg/Hp, 127.6 Hp/tonne
Weight-to-torque ratio
5 kg/Nm, 200.1 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
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

Volume and weights

Kerb Weight
3143 kg 6929 lbs.
Max. weight
4695 kg 10351 lbs.
Max load
1552 kg 3422 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
6127 mm 241.22 in.
Width including mirrors
2079 mm 81.85 in.
Height
2031 mm 79.96 in.
Wheelbase
3795 mm 149.41 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
10 gears, automatic transmission Allison
Front suspension
Independent torsion bar, double wishbone
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
245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20
Wheel rim size
7.5J x 17; 8J x 18; 8.5J x 20