← all 2014 GMC Sierra K15 4WD trims
2014 GMC Sierra K15 4WD — 4.3L 6-cyl, Automatic 6-spd, 4WD
This 2014 GMC Sierra K15 4WD (4.3L 6-cyl, Automatic 6-spd, 4WD) is flex-fuel (gasoline or E85). FLEX-FUEL
19
MPG combined (17 city / 22 hwy)
$3,300
est. fuel cost / year (EPA, 15k mi)
474 g/mi
tailpipe CO₂
Other 2014 GMC Sierra K15 4WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 6.2L 8-cyl, Automatic 6-spd, 4WD | REGULAR | 17 | $3,650 |
| 5.3L 8-cyl, Automatic 6-spd, 4WD | FLEX-FUEL | 18 | $3,450 |
EPA fuel type: Gasoline or E85 · class: Standard Pickup Trucks 4WD · retrieved 2026-06-14.