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| 2021 GMC Sierra 1500 Regular Cab | 2020 GMC Sierra 1500 Regular Cab | |
| Price Range | $30,000 - $35,995 | $29,600 - $35,595 |
| Engine(s) | 4.3l V6, 5.3l V8 | 4.3l V6, 5.3l V8 |
| Transmission(s) | A6 | A6 |
| Driven Wheels | AWD, RWD | AWD, RWD |
| Length / Width / Height | 229.6 / 81.2 / 75.6 | 229.6 / 81.2 / 75.6 |
| Curb Weight (lbs.) | 4520 - 4800 | 4520 - 4800 |