1990 GMC Sonoma Sierra Classic Extended Cab SB
The 1990 GMC Sonoma Sierra Classic Extended Cab SB is a 2.5-liter inline-4 with an automatic 4-speed and rear-wheel drive. It starts at $11,487 MSRP and is rated at 21 mpg combined.
EPA fuel-economy estimates are 18 mpg city and 25 mpg highway (21 mpg combined).
The Sonoma measures 192.8 inches long on a 122.9-inch wheelbase.
| Spec | Value |
|---|---|
| Price | |
| MSRP | $11,487 ($28,564 *) |
| Engine | |
| Engine Type | 2.5L I4 |
| Displacement | 2.5 L |
| Drivetrain | |
| Drive Type | RWD |
| Transmission | |
| Transmission | Automatic 4-speed |
| Fuel Economy | |
| City | 18 MPG |
| Highway | 25 MPG |
| Combined | 21 MPG |
| Recommended Fuel | Regular Gasoline |
| Tank Capacity | 20 gal |
| Tires & Wheels | |
| Wheels Front | 14-in. |
| Wheels Rear | 14-in. |
| Dimensions & Weight | |
| Length | 192.8 in |
| Width | 64.7 in |
| Height | 61.3 in |
| Wheelbase | 122.9 in |
* Amount adjusted for inflation to 2026 dollars