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| 2011 GMC Sierra 1500 Extended Cab | 2010 GMC Sierra 1500 Extended Cab | |
| Price Range | $25,780 - $40,685 | |
| Engine(s) | 4.3l V6, 4.8l V8, 5.3l V8, 6.2l V8 | 4.8l V8, 5.3l V8 |
| Transmission(s) | A4, A6 | A4, A6 |
| Driven Wheels | 4WD, RWD | 4WD, RWD |
| Length / Width / Height | 230.2 / None / 73.6 | 230.2 / None / 73.6 |
| Curb Weight (lbs.) | 5075 - 5488 | 5135 - 5509 |