Comparison GMC Sierra 2500HD IV (GMTK2XX) Double Cab Long Box 6.6 Duramax TD V8 (397 Hp) 4WD Automatic & GMC Sierra 2500HD IV (GMTK2XX) Regular Cab Long Box 6.0 V8 (301 Hp) 4WD Automatic CNG
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| Brand: | GMC | GMC |
| Model: | Sierra 2500HD | Sierra 2500HD |
| Generation: | Sierra 2500HD IV (GMTK2XX) Double Cab Long Box | Sierra 2500HD IV (GMTK2XX) Regular Cab Long Box |
| Engine / modification: | 6.6 Duramax TD V8 (397 Hp) 4WD Automatic | 6.0 V8 (301 Hp) 4WD Automatic CNG |
| Production start: | 2015 year | 2015 year |
| Production end: | 2017 year | 2016 year |
| Coupe type: | Pick-up | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | Internal Combustion engine |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 2 |
| Fuel Type: | Diesel | Petrol / CNG |
| Fuel tank volume: | 136 l | 136 l |
| Power: | 397 hp | 301 hp |
| Max power in: | 3000 rpm. | 5000 rpm. |
| Torque: | 1037 Nm @ 1600 rpm. | 452 Nm @ 4200 rpm. |
| Model Engine: | Duramax LML | Vortec LC8 |
| Engine displacement: | 6604 cm3 | 5967 cm3 |
| Engine oil capacity: | 9.5 l | 5.7 l |
| Coolant: | 22.4 l | 15.5 l |
| Maximum engine speed: | 6000 rpm. | |
| CNG cylinder capacity: | 67 kg | |
| Aspiration / Turbine: | Naturally aspirated engine | |
| Valvetrain: | OHV | OHV, VVT |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 16 | 9.6 |
| Piston Stroke: | 99 mm | 92 mm |
| Cylinder Bore: | 103 mm | 101.6 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Length: | 6322 mm | 5699 mm |
| Width including mirrors: | 2045 mm | 2035 mm |
| Height: | 1977 mm | 1975 mm |
| Wheelbase: | 4017 mm | 3393 mm |
| Front track: | 1748 mm | 1748 mm |
| Rear (Back) track: | 1709 mm | 1709 mm |
| Ride height(clearance): | 214 mm | 231 mm |
| Maximum amount of Luggage (trunk): | 2162 l | |
| Max weight: | 4536 kg | |
| Kerb Weight: | 3262 kg | |
| Steering type: | Cone worm with recirculation balls | Cone worm with recirculation balls |
| Minimum turning circle (turning diameter): | 16.2 m | 14 m |
| Permitted trailer load with brakes (12%): | 6577 kg | 4218 kg |
| Tire size: | 245/75 R17; 265/70 R17; 265/70 R18; 265/60 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 | 7.5J x 17; 8J x 18; 8.5J x 20 |