GMC S15 Pickup Specs, MPG & Trims by Year
EPA fuel-economy and specification data for the GMC S15 Pickup, model years 1984–1990. The latest model year is shown first below.
Latest model year: 1990
- Body class
- Small Pickup Trucks, Standard Pickup Trucks
- Drive
- Rear-Wheel Drive, 4-Wheel or All-Wheel Drive
- Engine
- 4-cyl, 2.5 L; 6-cyl, 2.8 L; 6-cyl, 4.3 L
- Fuel type
- Regular Gasoline
- Configurations
- 7
- Combined MPG
- 16–22 MPG
- Annual fuel cost
- $3,050–$4,200
View the full 1990 GMC S15 Pickup specs, MPG and trims
Across all 7 model years, EPA combined ratings span 16–29 MPG.
All model years
| Year | Body class | Combined | Configurations | Annual fuel cost |
|---|---|---|---|---|
| 1990 | Small Pickup Trucks, Standard Pickup Trucks | 16–22 MPG | 7 | $3,050–$4,200 |
| 1989 | Small Pickup Trucks, Standard Pickup Trucks | 17–22 MPG | 6 | $3,050–$3,950 |
| 1988 | Small Pickup Trucks | 18–23 MPG | 6 | $2,900–$3,700 |
| 1987 | Small Pickup Trucks | 16–22 MPG | 8 | $3,050–$4,200 |
| 1986 | Small Pickup Trucks | 18–24 MPG | 6 | $2,800–$3,700 |
| 1985 | Small Pickup Trucks | 18–28 MPG | 14 | $2,900–$3,700 |
| 1984 | Small Pickup Trucks 2WD | 18–29 MPG | 17 | $2,600–$3,700 |