2015 GMC Sierra C15 Cab Chassis Specs
EPA fuel economy, engine specs, and towing capacity
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At a Glance
18
MPG Combined
16 city / 0 hwy
16 city / 0 hwy
4.3L V6
Engine
RWD
Drivetrain
$2,917
Est. annual fuel
15k mi @ $3.50/gal
15k mi @ $3.50/gal
All Trim Levels — Fuel Economy
| Trim / Transmission | Fuel Type | Engine | Drive | City | Hwy | Combined | CO₂ (g/mi) |
|---|---|---|---|---|---|---|---|
| Automatic 6-spd | Gasoline or E85 | 5.3L V8 | RWD | 15 | 0 | 17 | 525 |
| Automatic 6-spd | Regular | 5.3L V8 | RWD | 15 | 0 | 17 | 525 |
| Automatic 6-spd | Gasoline or E85 | 4.3L V6 | RWD | 16 | 0 | 18 | 496 |
Source: EPA FuelEconomy.gov. MPG figures are for reference; actual mileage varies.
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