2007 GMC Sierra: Sierra C15 2WD · 6.0L · RWD · 4-speed automatic
One configuration of the 2007 GMC Sierra as listed by our sources. Every figure below carries its source.
| Specification | Value | Source |
|---|---|---|
| Engine | 6.0L 8-cylinder | EPA fueleconomy.gov |
| Displacement | 6.0 L | EPA fueleconomy.gov |
| Cylinders | 8 | EPA fueleconomy.gov |
| Fuel type | Gasoline | EPA fueleconomy.gov |
| Transmission | 4-speed automatic | EPA fueleconomy.gov |
| Drivetrain | RWD | EPA fueleconomy.gov |
| Combined economy | 15 mpg (15.7 L/100 km) | EPA fueleconomy.gov |
| City economy | 13 mpg (18.1 L/100 km) | EPA fueleconomy.gov |
| Highway economy | 18 mpg (13.1 L/100 km) | EPA fueleconomy.gov |
Provenance & verification
- EPA fueleconomy.gov · US Government public data
Source checked: October 16, 2026
Data verified: October 16, 2026