2004 GMC Sierra vs. 2008 Hummer H2
To start off, 2008 Hummer H2 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2004 GMC Sierra would be higher. At 6,199 cc (8 cylinders), 2008 Hummer H2 is equipped with a bigger engine. In terms of performance, 2008 Hummer H2 (393 HP) has 93 more horse power than 2004 GMC Sierra. (300 HP) In normal driving conditions, 2008 Hummer H2 should accelerate faster than 2004 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 50 kg more than 2008 Hummer H2.
Let's talk about torque, 2008 Hummer H2 (563 Nm) has 75 more torque (in Nm) than 2004 GMC Sierra. (488 Nm). This means 2008 Hummer H2 will have an easier job in driving up hills or pulling heavy equipment than 2004 GMC Sierra. 2008 Hummer H2 has automatic transmission and 2004 GMC Sierra has manual transmission. 2004 GMC Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Hummer H2 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 GMC Sierra | 2008 Hummer H2 | |
| Make | GMC | Hummer |
| Model | Sierra | H2 |
| Year Released | 2004 | 2008 |
| Body Type | Pickup | SUV |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 6199 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 300 HP | 393 HP |
| Torque | 488 Nm | 563 Nm |
| Engine Compression Ratio | 9.4:1 | 10.5:1 |
| Transmission Type | Manual | Automatic |
| Number of Seats | 3 seats | 7 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2282 kg | 2232 kg |
| Vehicle Length | 5650 mm | 4830 mm |
| Vehicle Width | 2000 mm | 2070 mm |
| Vehicle Height | 1890 mm | 2020 mm |
| Wheelbase Size | 3380 mm | 3130 mm |
| Fuel Tank Capacity | 129 L | 121 L |
