1990 GMC Sierra HD 6.2L 4WD
The 1990 GMC Sierra HD 6.2L 4WD is a 300-hp 6.2-liter turbocharged V8 with an automatic 4-speed and all-wheel drive. It is rated at 16 mpg combined.
It makes 300 horsepower. EPA fuel-economy estimates are 15 mpg city and 20 mpg highway (16 mpg combined).
| Spec | Value |
|---|---|
| Engine | |
| Engine Type | 6.6L Duramax turbo-diesel V8 |
| Displacement | 6.2 L |
| Horsepower | 300 hp |
| Drivetrain | |
| Drive Type | 4-Wheel or All-Wheel Drive |
| Transmission | |
| Transmission | Automatic 4-speed |
| 1st Gear | 3.06 |
| 2nd Gear | 1.63 |
| 3rd Gear | 1 |
| 4th Gear | 0.7 |
| Fuel Economy | |
| City | 15 MPG |
| Highway | 20 MPG |
| Combined | 16 MPG |
| Recommended Fuel | Diesel |