GMC Sierra (1999–2006)
Standard Pickup Trucks 2WD2nd generationgashybrid113.5 cu ft max
Pickup bedTailgate
95
VE SCORE
Excellent Volumetric Efficiency for a standard pickup trucks 2wd — cargo volume × EPA MPGe, ranked against class peers.
Storage spaces
Crew cab configuration (2004-2006)
secondary source| Volume | 113.5 cu ft · 3215 L |
| Floor length | 97.0" |
| Floor width (min) | 54.0" |
Source: www.autopadre.com — secondary source · community verification wanted
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Fuel economy (EPA)
| Trim | Years | Fuel | Best combined MPGe | City | Highway |
|---|---|---|---|---|---|
| 1500 · RearWD · Manual 5-spd | 1999–2006 | Regular Gasoline | 18 | 15 | 21 |
| 1500 · RearWD · Automatic 4-spd | 1999–2006 | Regular Gasoline | 17 | 15 | 20 |
| 15 Hybrid · RearWD · Automatic 4-spd | 2004–2006 | Regular Gasoline | 17 | 16 | 19 |
| 1500 · 4-Wheel or AWD · Automatic 4-spd | 1999–2006 | Regular Gasoline | 16 | 14 | 19 |
| 15 Hybrid · 4-Wheel or AWD · Automatic 4-spd | 2004–2006 | Regular Gasoline | 16 | 15 | 17 |
| 1500 · 4-Wheel or AWD · Manual 5-spd | 1999–2006 | Regular Gasoline | 15 | 13 | 16 |
| 2500 · RearWD · Automatic 4-spd | 1999–2000 | Regular Gasoline | 15 | 14 | 18 |
| Denali 1500 · 4-Wheel or AWD · Automatic 4-spd | 2002–2003 | Regular Gasoline | 13 | 11 | 15 |
| 2500 HD · RearWD · Automatic 4-spd | 2005 | Regular Gasoline | 11 | 10 | 12 |
| 2500 HD · 4-Wheel or AWD · Automatic 4-spd | 2005 | Natural Gas | 9 | 8 | 11 |