| General | |
| Body type | Pick-up |
| Brand | GMC |
| Doors | 4 |
| End of production | 2023 |
| Generation | Sierra 2500HD V (GMTT1XX) Double Cab Standard Bed |
| Model | Sierra 2500HD |
| Modification (Engine) | 6.6 Duramax TD V8 (445 Hp) 4WD Automatic |
| Powertrain Architecture | Internal Combustion engine |
| Seats | 5 |
| Start of production | 2020 |
| Performance | |
| Fuel Type | Diesel |
| Dimensions | |
| Front track | 1731 mm |
| Height | 2031 mm |
| Length | 6107 mm |
| Rear (Back) track | 1736 mm |
| Ride height (ground clearance) | 259 mm |
| Wheelbase | 3795 mm |
| Engine | |
| Compression ratio | 16 |
| Coolant | 29.1 l |
| Cylinder Bore | 103 mm |
| Engine Model/Code | Duramax L5P |
| Engine aspiration | Turbocharger, Intercooler |
| Engine configuration | V-engine |
| Engine displacement | 6604 cm |
| Engine layout | Front, Longitudinal |
| Engine oil capacity | 9.5 l |
| Engine systems | Particulate filter |
| Fuel injection system | Diesel Commonrail |
| Number of cylinders | 8 |
| Number of valves per cylinder | 4 |
| Power | 445 Hp @ 2800 rpm. |
| Torque | 1234 Nm @ 1600 rpm. |
| Drivetrain | |
| Drive wheel | All wheel drive (4x4) |
| Front brakes | Ventilated discs, 350x40 mm |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Number of gears and type of gearbox | 10 gears, automatic transmission Allison |
| Power steering | Hydraulic Steering |
| Rear brakes | Ventilated discs, 360x34 mm |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Steering type | Cone worm with recirculation balls |
| Tires size | 235/80 R17; 265/70 R17; 245/75 R17; 265/70 R18; 265/60 R20 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 20 |
| Space | |
| Fuel tank capacity | 111 l |
| Kerb Weight | 3441 kg |
| Max load | 1549 kg |
| Max. weight | 4990 kg |
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