Comparison GMC Sierra 2500HD V (GMTT1XX) Double Cab Long Bed 6.6 Duramax TD V8 (445 Hp) 4WD Automatic & Holden Commodore (VT) 5.7i V8 (320 Hp) Automatic & GMC Sierra 1500 V (GMTT1XX, facelift 2022) Double Cab 2.7 Turbo (310 Hp) 4WD Automatic
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| Brand: | GMC | Holden | GMC |
| Model: | Sierra 2500HD | Commodore | Sierra 1500 |
| Generation: | Sierra 2500HD V (GMTT1XX) Double Cab Long Bed | Commodore (VT) | Sierra 1500 V (GMTT1XX, facelift 2022) Double Cab |
| Engine / modification: | 6.6 Duramax TD V8 (445 Hp) 4WD Automatic | 5.7i V8 (320 Hp) Automatic | 2.7 Turbo (310 Hp) 4WD Automatic |
| Production start: | 2020 year | 2004 year | 2022 year |
| Production end: | 2023 year | 2006 year | |
| Coupe type: | Pick-up | Sedan | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | Internal Combustion engine | |
| Num. of Doors: | 4 | 4 | 4 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 13.5 l/100 km | 13.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 8.5 l/100 km | 11.8 l/100 km | |
| Fuel Type: | Diesel | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 136 l | 75 l | 91 l |
| Power: | 445 hp | 320 hp | 310 hp |
| Max power in: | 2800 rpm. | 5200 rpm. | 5600 rpm. |
| Torque: | 1234 Nm @ 1600 rpm. | 464 Nm @ 4400 rpm. | 473 Nm @ 1500-4000 rpm. |
| Model Engine: | Duramax L5P | L3B | |
| Engine position: | Front, longitudinal | ||
| Engine displacement: | 6604 cm3 | 5665 cm3 | 2727 cm3 |
| Engine oil capacity: | 9.5 l | 5.7 l | |
| Coolant: | 29.1 l | 11.8 l | |
| Fuel System: | Multi-point injection | ||
| Position of cylinders: | V engine | ||
| Valvetrain: | OHV | DOHC | DOHC, VVT DI |
| Number of cylinders: | 8 | 8 | 4 |
| Number of valves per cylinder: | 4 | 2 | 4 |
| Compression ratio: | 16 | 10.1 | 10 |
| Piston Stroke: | 99 mm | 92 mm | 102 mm |
| Cylinder Bore: | 103 mm | 99 mm | 92.25 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 4 | ||
| Length: | 6514 mm | 4891 mm | 5891 mm |
| Width: | 1842 mm | 2063 mm | |
| Width including mirrors: | 2079 mm | 2478 mm | |
| Height: | 2027 mm | 1425 mm | 1921 mm |
| Wheelbase: | 4127 mm | 2788 mm | 3745 mm |
| Front track: | 1731 mm | 1559 mm | |
| Rear (Back) track: | 1736 mm | 1577 mm | |
| Ride height(clearance): | 258 mm | 205 mm | |
| Approach angle: | 19.2 ° | ||
| Departure angle: | 23.9 ° | ||
| Minimum volume of Luggage (trunk): | 475 l | ||
| Front suspension: | Coil spring | ||
| Rear suspension: | Helical spring | ||
| Max weight: | 5080 kg | 3175 kg | |
| Front brakes: | Ventilated discs | ||
| Rear brakes: | Disc | ||
| Kerb Weight: | 3505 kg | 1615 kg | 2250 kg |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | Hydraulic Steering | Electric Steering |
| Permitted trailer load with brakes (12%): | 6577 kg | 4037 kg | |
| Tire size: | 265/70 R17; 245/75 R17; 265/70 R18; 265/60 R20 | 235/40 R18 | 255/70 R17; 265/70 R17; 265/65 R18 |
| Wheel rims size: | 7.5J x 17; 8J x 18; 8.5J x 20 | R18 | 8.0J x 17; 8.5J x 18 |