← all 2008 GMC Sierra K15 4WD trims
2008 GMC Sierra K15 4WD — 6.0L 8-cyl, Automatic 4-spd, AWD
This 2008 GMC Sierra K15 4WD (6.0L 8-cyl, Automatic 4-spd, AWD) takes regular (87-octane) gasoline. REGULAR
14
MPG combined (13 city / 17 hwy)
$4,450
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 2008 GMC Sierra K15 4WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 4.8L 8-cyl, Automatic 4-spd, AWD | REGULAR | 16 | $3,900 |
| 5.3L 8-cyl, Automatic 4-spd, AWD | REGULAR | 16 | $3,900 |
| 4.3L 6-cyl, Automatic 4-spd, AWD | REGULAR | 15 | $4,150 |
| 5.3L 8-cyl, Automatic 4-spd, AWD | FLEX-FUEL | 16 | $3,900 |
EPA fuel type: Regular · class: Standard Pickup Trucks 4WD · retrieved 2026-06-14.