← all 1991 GMC Sierra 2500 4WD trims
1991 GMC Sierra 2500 4WD — 6.2L 8-cyl, 5-spd manual, AWD
This 1991 GMC Sierra 2500 4WD (6.2L 8-cyl, 5-spd manual, AWD) runs on diesel. DIESEL
18
MPG combined (17 city / 21 hwy)
$4,350
est. fuel cost / year (EPA, 15k mi)
—
tailpipe CO₂
EPA fuel type: Diesel · class: Standard Pickup Trucks 4WD · retrieved 2026-06-14.