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2008 GMC Sierra 1500 Extended Cab Specifications
| Powertrain | |||||||
| Powertrain | Internal Combustion | ||||||
| Engine | |||||||
| Configuration | V | ||||||
| Cylinders | 8 | 6 | 8 | ||||
| Fuel Type | Gasoline | ||||||
| Displacement (cc) | 5328 | 4807 | 4300 | 5328 | 4807 | 5967 | |
| Max. Power (bhp) | 315 | 295 | 195 | 315 | 295 | 367 | |
| Max. Power @RPM | 5200 | 5600 | 4600 | 5200 | 5600 | 5500 | |
| Max. Torque (lbft) | 338 | 305 | 260 | 338 | 305 | 375 | |
| Max. Torque @RPM | 4400 | 4800 | 2800 | 4400 | 4800 | 4300 | |
| Transmission | |||||||
| Transmission Type | Automatic | ||||||
| Forward Gears | 4 | ||||||
| Driveline | |||||||
| Driven Wheels | RWD | 4WD | RWD | 4WD | RWD | 4WD | |
| Body | |||||||
| Generic Type | Truck | ||||||
| No Side Doors | 2 | ||||||
| Vehicle Size | Large | ||||||
| Convertible Top | No | ||||||
| Exterior Dimensions | |||||||
| Curb Weight (lb) | 4797 | 5265 | 4797 | 5265 | 4797 | 5265 | |
| Wheelbase (in) | 143.5 | ||||||
| Height - Body (in) | 73.9 | ||||||
| Width - Body (in) | 79.9 | ||||||
| Length (in) | 230.2 | ||||||
| Front Track (in) | 68.1 | ||||||
| Rear Track (in) | 67 | ||||||
| Chassis | |||||||
| Chassis Type | Body-on-Frame | ||||||
| Engine Position | Front | ||||||
| Suspension | |||||||
| Front Suspension - Type | Independent | ||||||
| Rear Suspension - Type | Solid axle | ||||||
| Brakes | |||||||
| Front Brakes - Type | Disc | ||||||
| Rear Brakes - Type | Drum | ||||||
| Wheels / Tires | |||||||
| Tire Size F (,R) | 245/70R17 | ||||||
| Seating | |||||||
| Rows of Seats | 2 | ||||||
| Utility | |||||||
| Cargo Configuration | Bed | ||||||
| Fuel Economy | |||||||
| EPA City (mpg) | 15 | 14 | 15 | 14 | 13 | ||
| EPA Hwy (mpg) | 20 | 18 | 20 | 19 | 18 | 17 | |
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