← all 1988 GMC T15 (S15) Pickup 4WD trims
1988 GMC T15 (S15) Pickup 4WD — 2.5L 4-cyl, 5-spd manual, AWD
This 1988 GMC T15 (S15) Pickup 4WD (2.5L 4-cyl, 5-spd manual, AWD) takes regular (87-octane) gasoline. REGULAR
20
MPG combined (18 city / 24 hwy)
$3,100
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1988 GMC T15 (S15) Pickup 4WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 2.5L 4-cyl, Automatic 4-spd, AWD | REGULAR | 20 | $3,100 |
| 2.8L 6-cyl, Automatic 4-spd, AWD | REGULAR | 18 | $3,450 |
| 2.8L 6-cyl, 4-spd manual, AWD | REGULAR | 18 | $3,450 |
| 2.8L 6-cyl, 5-spd manual, AWD | REGULAR | 18 | $3,450 |
| 4.3L 6-cyl, Automatic 4-spd, AWD | REGULAR | 17 | $3,650 |
EPA fuel type: Regular · class: Standard Pickup Trucks · retrieved 2026-06-14.