← all 1990 GMC R1500 Suburban 2WD trims
1990 GMC R1500 Suburban 2WD — 5.7L 8-cyl, Automatic 4-spd, RWD
This 1990 GMC R1500 Suburban 2WD (5.7L 8-cyl, Automatic 4-spd, RWD) takes regular (87-octane) gasoline. REGULAR
14
MPG combined (12 city / 17 hwy)
$4,450
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
Other 1990 GMC R1500 Suburban 2WD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 6.2L 8-cyl, Automatic 4-spd, RWD | DIESEL | 17 | $4,600 |
EPA fuel type: Regular · class: Special Purpose Vehicle 2WD · retrieved 2026-06-14.