Comparison GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box 6.6 Duramax TD V8 (397 Hp) Automatic & GMC Sierra 2500HD V (GMTT1XX, facelift 2024) Regular Cab Long Bed 6.6 Duramax TD V8 (470 Hp) Automatic & GMC Envoy II XL (GMT360) 5.3i V8 (290 Hp) 4x4 Automatic
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| Brand: | GMC | GMC | GMC |
| Model: | Sierra 2500HD | Sierra 2500HD | Envoy |
| Generation: | Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box | Sierra 2500HD V (GMTT1XX, facelift 2024) Regular Cab Long Bed | Envoy II XL (GMT360) |
| Engine / modification: | 6.6 Duramax TD V8 (397 Hp) Automatic | 6.6 Duramax TD V8 (470 Hp) Automatic | 5.3i V8 (290 Hp) 4x4 Automatic |
| Production start: | 2011 year | 2023 year | 2003 year |
| Production end: | 2014 year | 2004 year | |
| Coupe type: | Pick-up | Pick-up | SUV |
| Powertrain Architecture: | Internal Combustion engine | Internal Combustion engine | |
| Num. of Doors: | 2 | 2 | 5 |
| Num. of seats: | 5 | 2 | 7 |
| Fuel consumption / economy - urban: | 16.8 l/100 km | ||
| Fuel consumption / economy - extra urban: | 13.1 l/100 km | ||
| Fuel Type: | Diesel | Diesel | Petrol (Gasoline) |
| Fuel tank volume: | 136 l | 106 l | 96.1 l |
| Power: | 397 hp | 470 hp | 290 hp |
| Max power in: | 3000 rpm. | 2800 rpm. | 5200 rpm. |
| Maximum speed: | 175 km/h | ||
| Torque: | 1037 Nm @ 1600 rpm. | 1322 Nm @ 1600 rpm. | 441 Nm/4000 rpm. |
| Model Engine: | Duramax LML | L5P | LM4 Vortec 5300 |
| Engine position: | Front, longitudinal | ||
| Engine displacement: | 6599 cm3 | 6604 cm3 | 5328 cm3 |
| Engine oil capacity: | 9.5 l | 6.6 l | |
| Coolant: | 24 l | 17 l | |
| Fuel System: | Multi-point injection | ||
| Maximum engine speed: | 3000 rpm. | 5900 rpm. | |
| Position of cylinders: | V engine | ||
| Valvetrain: | OHV | OHV | OHV |
| Number of cylinders: | 8 | 8 | 8 |
| Number of valves per cylinder: | 4 | 4 | 2 |
| Compression ratio: | 16 | 16 | 9.5 |
| Piston Stroke: | 99 mm | 99 mm | 92 mm |
| Cylinder Bore: | 103 mm | 103 mm | 96 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 4 Hydra-Matic | ||
| Length: | 6337 mm | 6002 mm | 5271 mm |
| Width: | 1897 mm | ||
| Width including mirrors: | 2032 mm | 2076 mm | |
| Height: | 1971 mm | 2030 mm | 1917 mm |
| Wheelbase: | 4018 mm | 3595 mm | 3275 mm |
| Front track: | 1748 mm | 1731 mm | 1603 mm |
| Rear (Back) track: | 1709 mm | 1736 mm | 1576 mm |
| Ride height(clearance): | 216 mm | 259 mm | 203 mm |
| Approach angle: | 34.1 ° | ||
| Departure angle: | 23.6 ° | ||
| Minimum volume of Luggage (trunk): | 631 l | ||
| Maximum amount of Luggage (trunk): | 2138 l | 2839 l | |
| Front suspension: | Independent torsion bar, double wishbone | Independent torsion bar, double wishbone | Double wishbone |
| Rear suspension: | Multi-link independent | ||
| Max weight: | 4536 kg | 4785 kg | 2903 kg |
| Front brakes: | Ventilated discs | ||
| Rear brakes: | Disc | ||
| Kerb Weight: | 3168 kg | 3095 kg | 2393 kg |
| ABS: | yes | ||
| Steering type: | Cone worm with recirculation balls | Cone worm with recirculation balls | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 15.8 m | 12.6 m | |
| Permitted trailer load with brakes (12%): | 5897 kg | 6577 kg | 3175 kg |
| Tire size: | 245/75 R17; 265/70 R17; 265/70 R18; 265/60 R20 | 235/80 R17; 265/70 R17; 245/75 R17; 265/70 R18; 265/60 R20 | 245/65 R17 |
| 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 | 7.0J x 17 |