2021 Chevrolet Silverado: Silverado 4WD TrailBoss · 5.3L · 4WD · 10-speed automatic
One configuration of the 2021 Chevrolet Silverado as listed by our sources. Every figure below carries its source.
| Specification | Value | Source |
|---|---|---|
| Engine | 5.3L 8-cylinder (SIDI) | EPA fueleconomy.gov |
| Displacement | 5.3 L | EPA fueleconomy.gov |
| Cylinders | 8 | EPA fueleconomy.gov |
| Fuel type | Gasoline | EPA fueleconomy.gov |
| Transmission | 10-speed automatic | EPA fueleconomy.gov |
| Drivetrain | 4WD | EPA fueleconomy.gov |
| Combined economy | 17 mpg (13.8 L/100 km) | EPA fueleconomy.gov |
| City economy | 15 mpg (15.7 L/100 km) | EPA fueleconomy.gov |
| Highway economy | 21 mpg (11.2 L/100 km) | EPA fueleconomy.gov |
Provenance & verification
- EPA fueleconomy.gov · US Government public data
Source checked: October 11, 2026
Data verified: October 11, 2026