Comparison GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Crew Cab Long Bed 6.6 V8 (401 Hp) 4WD Automatic & GMC Sierra 2500HD III (GMT900) Extended Cab Long Box 6.6 Duramax TD V8 (365 Hp) 4WD Automatic
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| Brand: | GMC | GMC |
| Model: | Sierra 2500HD | Sierra 2500HD |
| Generation: | Sierra 2500HD V (GMTT1XX, facelift 2024) Crew Cab Long Bed | Sierra 2500HD III (GMT900) Extended Cab Long Box |
| Engine / modification: | 6.6 V8 (401 Hp) 4WD Automatic | 6.6 Duramax TD V8 (365 Hp) 4WD Automatic |
| Production start: | 2023 year | 2007 year |
| Production end: | 2010 year | |
| Coupe type: | Pick-up | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | Internal Combustion engine |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 5 |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Fuel tank volume: | 136 l | 129 l |
| Power: | 401 hp | 365 hp |
| Max power in: | 5200 rpm. | 3200 rpm. |
| Torque: | 629 Nm @ 4000 rpm. | 895 Nm @ 1600 rpm. |
| Model Engine: | L8T | Duramax LMM |
| Engine displacement: | 6599 cm3 | |
| Engine oil capacity: | 7.6 l | 9.5 l |
| Coolant: | 14.6 l | 24 l |
| Maximum engine speed: | 3450 rpm. | |
| Aspiration / Turbine: | Naturally aspirated engine | |
| Valvetrain: | OHV | OHV |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 10.8 | 16.8 |
| Piston Stroke: | 98 mm | 99 mm |
| Cylinder Bore: | 103.25 mm | 103 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Length: | 6776 mm | 6330 mm |
| Width including mirrors: | 2079 mm | 2436 mm |
| Height: | 2023 mm | 1930 mm |
| Wheelbase: | 4369 mm | 4001 mm |
| Front track: | 1731 mm | 1744 mm |
| Rear (Back) track: | 1736 mm | 1676 mm |
| Ride height(clearance): | 256 mm | 243 mm |
| Maximum amount of Luggage (trunk): | 2138 l | |
| Front suspension: | Independent torsion bar, double wishbone | Independent torsion bar, double wishbone |
| Max weight: | 4831 kg | 4173 kg |
| Kerb Weight: | 3196 kg | 3036 kg |
| Steering type: | Cone worm with recirculation balls | Cone worm with recirculation balls |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 16 m | |
| Permitted trailer load with brakes (12%): | 7257 kg | 5897 kg |
| Tire size: | 245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20 | 245/75 R16; 265/75 R17 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 20 | 6.5J x 16; 7.5J x 17 |