Comparison GMC Sierra 2500HD III (GMT900) Crew Cab Long Box 6.6 Duramax TD V8 (365 Hp) 4WD Automatic & Kia Optima IV 2.0 CVVL (163 Hp) & GMC Denali 6.2 i V8 16V (403 Hp) FlexFuel Automatic
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| Brand: | GMC | Kia | GMC |
| Model: | Sierra 2500HD | Optima | Yukon |
| Generation: | Sierra 2500HD III (GMT900) Crew Cab Long Box | Optima IV | |
| Engine / modification: | 6.6 Duramax TD V8 (365 Hp) 4WD Automatic | 2.0 CVVL (163 Hp) | Denali 6.2 i V8 16V (403 Hp) FlexFuel Automatic |
| Production start: | 2007 year | 2015 year | 2009 year |
| Production end: | 2010 year | 2013 year | |
| Coupe type: | Pick-up | Sedan | Off-road vehicle |
| Powertrain Architecture: | Internal Combustion engine | ||
| Num. of Doors: | 4 | 4 | 5 |
| Num. of seats: | 5 | 5 | 8 |
| Fuel consumption / economy - urban: | 10.0 l/100 km | 19.6 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.9 l/100 km | 12.4 l/100 km | |
| Fuel consumption / economy - combined: | 7.4 l/100 km | ||
| Fuel Type: | Diesel | Petrol (Gasoline) | Petrol / Ethanol - E85 |
| Fuel tank volume: | 129 l | 70 l | 98 l |
| Emission standard: | EURO VI b | ||
| CO2 emissions: | 173 g/km | ||
| Power: | 365 hp | 163 hp | 403 hp |
| Max power in: | 3200 rpm. | 6500 rpm. | 5700 rpm. |
| Maximum speed: | 210 km/h | ||
| Acceleration from 0 to 100 km/h: | 9.4 sec | ||
| Torque: | 895 Nm @ 1600 rpm. | 196 Nm/4800 rpm. | 565 Nm @ 4300 rpm. |
| Model Engine: | Duramax LMM | L9H | |
| Engine position: | Front, transverse | Front, longitudinal | |
| Engine displacement: | 6599 cm3 | 1999 cm3 | 6162 cm3 |
| Engine oil capacity: | 9.5 l | 5.7 l | |
| Coolant: | 24 l | ||
| Fuel System: | Multi-point injection | ||
| Maximum engine speed: | 3450 rpm. | 6000 rpm. | |
| Position of cylinders: | Inline | V engine | |
| Valvetrain: | OHV | VVT | |
| Number of cylinders: | 8 | 4 | 8 |
| Number of valves per cylinder: | 4 | 4 | 2 |
| Compression ratio: | 16.8 | 10.3 | 10.5 |
| Piston Stroke: | 99 mm | 97 mm | 92 mm |
| Cylinder Bore: | 103 mm | 81 mm | 103.25 mm |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 | ||
| Number of Gears (manual transmission): | 6 | ||
| Length: | 6572 mm | 4855 mm | 5130 mm |
| Width: | 1860 mm | 2009 mm | |
| Width including mirrors: | 2436 mm | ||
| Height: | 1930 mm | 1465 mm | 1956 mm |
| Wheelbase: | 4242 mm | 2805 mm | 2946 mm |
| Front track: | 1744 mm | 1607 mm | 1732 mm |
| Rear (Back) track: | 1676 mm | 1614 mm | 1702 mm |
| Ride height(clearance): | 243 mm | 135 mm | 227 mm |
| Approach angle: | 16.02 ° | ||
| Departure angle: | 21.65 ° | ||
| Minimum volume of Luggage (trunk): | 510 l | 479 l | |
| Maximum amount of Luggage (trunk): | 2138 l | 3084 l | |
| Front suspension: | Independent torsion bar, double wishbone | Independent, Spring McPherson, with stabilizer | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Double wishbone | ||
| Max weight: | 4173 kg | 2000 kg | 3220 kg |
| Front brakes: | Ventilated discs | ||
| Rear brakes: | Disc | ||
| Kerb Weight: | 3115 kg | 1455 kg | 2500 kg |
| ABS: | yes | ||
| Steering type: | Cone worm with recirculation balls | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | ||
| Minimum turning circle (turning diameter): | 16.8 m | 10.9 m | 11.9 m |
| Permitted trailer load with brakes (12%): | 5897 kg | 1700 kg | 3447 kg |
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 245/75 R16; 265/75 R17 | 215/60 R16; 215/55 R17; 235/45 R18 | |
| Wheel rims size: | 6.5J x 16; 7.5J x 17 | R16; R17; R18 | R20 |