1998 GMC Sierra: Sierra 1500 4WD · 4.3L · AWD · 5-speed manual
One configuration of the 1998 GMC Sierra as listed by our sources. Every figure below carries its source.
| Specification | Value | Source |
|---|---|---|
| Engine | 4.3L 6-cylinder | EPA fueleconomy.gov |
| Displacement | 4.3 L | EPA fueleconomy.gov |
| Cylinders | 6 | EPA fueleconomy.gov |
| Fuel type | Gasoline | EPA fueleconomy.gov |
| Transmission | 5-speed manual | EPA fueleconomy.gov |
| Drivetrain | AWD | EPA fueleconomy.gov |
| Combined economy | 16 mpg (14.7 L/100 km) | EPA fueleconomy.gov |
| City economy | 14 mpg (16.8 L/100 km) | EPA fueleconomy.gov |
| Highway economy | 19 mpg (12.4 L/100 km) | EPA fueleconomy.gov |
Provenance & verification
- EPA fueleconomy.gov · US Government public data
Source checked: October 19, 2026
Data verified: October 19, 2026