Brand
GMC
Model
Sierra 2500HD
Generation
Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box
Modification (Engine)
6.6 Duramax TD V8 (397 Hp) 4WD Automatic
Start of production
2011
End of production
2014
Powertrain Architecture
Internal Combustion engine
Body type
Seats
5
Doors
2
Engine systems
Particulate filter
Power
397 hp @ 3000 rpm.
Power per litre
60.2 hp/l
Torque
1037 nm @ 1600 rpm.
Engine Model/Code
Engine displacement
6599 cm
Number of cylinders
8
Engine configuration
V-engine
Number of valves per cylinder
4
Fuel injection system
Diesel Commonrail
Engine aspiration
Turbocharger, Intercooler
Valvetrain
OHV
Engine oil capacity
9.5 l
Coolant
24 l
Engine layout
Front, Longitudinal
Cylinder Bore
103 mm
Piston Stroke
99 mm
Compression ratio
16
Maximum engine speed
3000 rpm.
Fuel Type
Diesel
Weight-to-power ratio
8.3 kg/Hp, 120.3 Hp/tonne
Weight-to-torque ratio
3.2 kg/Nm, 314.2 Nm/tonne
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 Allison
Front brakes
Ventilated discs, 350x40 mm
Rear brakes
Ventilated discs, 360x34 mm
Assisting systems
ABS (Anti-lock braking system)
Steering type
Cone worm with recirculation balls
Tires size
245/75 R17; 265/70 R17; 265/70 R18; 265/60 R20
Wheel rims size
7.5J x 17; 8J x 18; 8.5J x 20
Front suspension
Independent torsion bar, double wishbone
Rear suspension
Rigid axle suspension, Leaf Spring