2006 GMC Sierra vs. 2008 GMC Sierra
To start off, 2008 GMC Sierra is newer by 2 year(s). Which means there will be less support and parts availability for 2006 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2006 GMC Sierra would be higher. At 5,999 cc (8 cylinders), 2008 GMC Sierra is equipped with a bigger engine. In terms of performance, 2008 GMC Sierra (353 HP) has 158 more horse power than 2006 GMC Sierra. (195 HP) In normal driving conditions, 2008 GMC Sierra should accelerate faster than 2006 GMC Sierra.
Because 2008 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2006 GMC Sierra. In wet, icy, snow, or gravel driving conditions, 2008 GMC Sierra will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 GMC Sierra (506 Nm) has 152 more torque (in Nm) than 2006 GMC Sierra. (354 Nm). This means 2008 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2006 GMC Sierra.
Compare all specifications:
| 2006 GMC Sierra | 2008 GMC Sierra | |
| Make | GMC | GMC |
| Model | Sierra | Sierra |
| Year Released | 2006 | 2008 |
| Body Type | Pickup | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4294 cc | 5999 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 195 HP | 353 HP |
| Torque | 354 Nm | 506 Nm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 6 seats |
| Vehicle Length | 5850 mm | 6580 mm |
| Vehicle Width | 2000 mm | 2040 mm |
| Vehicle Height | 1850 mm | 1960 mm |
| Wheelbase Size | 3650 mm | 4250 mm |
