Comparison GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed 6.6 V8 (401 Hp) Automatic & GMC Sierra HD Double Cab Long Box 3500 6.6 TD V8 (445 Hp) 4WD SRW Automatic
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| Brand: | GMC | GMC |
| Model: | Sierra 2500HD | Sierra 2500HD |
| Generation: | Sierra 2500HD V (GMTT1XX, facelift 2024) Double Cab Standard Bed | Sierra HD Double Cab Long Box |
| Engine / modification: | 6.6 V8 (401 Hp) Automatic | 3500 6.6 TD V8 (445 Hp) 4WD SRW Automatic |
| Production start: | 2023 year | 2018 year |
| Coupe type: | Pick-up | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 4 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Fuel tank volume: | 136 l | 136 l |
| Power: | 401 hp | 445 hp |
| Max power in: | 5200 rpm. | 2800 rpm. |
| Torque: | 629 Nm @ 4000 rpm. | 1234 Nm @ 1600 rpm. |
| Model Engine: | L8T | DURAMAX L5P |
| Engine position: | Front, longitudinal | |
| Engine displacement: | 6588 cm3 | |
| Engine oil capacity: | 7.6 l | 9.5 l |
| Coolant: | 14.6 l | |
| Fuel System: | Diesel Commonrail | |
| Aspiration / Turbine: | Naturally aspirated engine | Turbocharger |
| Position of cylinders: | V engine | |
| Valvetrain: | OHV | |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 10.8 | 16 |
| Piston Stroke: | 98 mm | 99 mm |
| Cylinder Bore: | 103.25 mm | 103 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 6 | |
| Length: | 6127 mm | 6322 mm |
| Width including mirrors: | 2079 mm | 2045 mm |
| Height: | 2031 mm | 1978 mm |
| Wheelbase: | 3795 mm | 4017 mm |
| Front track: | 1731 mm | |
| Rear (Back) track: | 1736 mm | |
| Ride height(clearance): | 258 mm | |
| Maximum amount of Luggage (trunk): | 2160 l | |
| Front suspension: | Independent torsion bar, double wishbone | Torsion |
| Rear suspension: | The spring | |
| Max weight: | 4559 kg | 5262 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 2985 kg | 3430 kg |
| ABS: | yes | |
| Steering type: | Cone worm with recirculation balls | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Permitted trailer load with brakes (12%): | 6577 kg | 6577 kg |
| Tire size: | 245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20 | 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 | 7J x 17; 7.5J x 17; 8J x 18; 8J x 20 |