GMC · 1982-1990
S-15
The GMC S-15 was the upscale twin of the Chevrolet S-10 for 1982-1990, sharing its engines, frames and body but with GMC trim such as the High Sierra package. It became the Sonoma for 1991.
- Years
- 1982-1990
- Drivetrain
- RWD · 4WD
- Engines
- 1.9 L Isuzu LR1 · 2.0 L LQ2 · 2.2 L Isuzu diesel LQ7
- Sold in
- US · Canada
Spec sheet
- Generation
- 1st Gen
- Production
- 1982–1990
- Assembly
- Moraine, OHShreveport, LAPontiac, MI (Pontiac West)
- Sold in
- USCanada
- Codes
- GMT325 platformS/T series
- Body styles
- Regular cabExtended cab (1983)
- Bed lengths
- 6 ft (short)7 ft (long)
- Drivetrains
- RWD4WD
- Transmissions
- 4-speed manual5-speed manual3-speed automatic4-speed automatic
- Trims
- BaseHigh Sierra / Sierra Classic (name dropped 1991)Gypsy Magic (appearance package)Two-tone, rally wheel and decal packages
- Wheelbase
- 108.3 / 117.9 / 122.9 in
Engines
- Displacement
- 1.95 L
- Config
- I4
- HP
- 82 hp
- Torque
- 101 lb-ft
- Years
- 1982-1985
- Displacement
- 2.0 L
- Config
- I4
- HP
- 83 hp
- Torque
- 108 lb-ft
- Years
- 1983-1984
- Displacement
- 2.2 L
- Config
- I4 diesel
- HP
- 62 hp
- Torque
- 96 lb-ft
- Years
- 1984-1985
- Displacement
- 2.5 L
- Config
- I4
- HP
- 92 hp
- Torque
- 130-134 lb-ft
- Years
- 1985-1990
- Displacement
- 2.8 L
- Config
- V6
- HP
- 125 hp
- Torque
- 150 lb-ft
- Years
- 1982-1990
- Notes
- 110-125 hp depending on year
- Displacement
- 4.3 L
- Config
- V6
- HP
- 160 hp
- Torque
- 230 lb-ft
- Years
- 1988-1990
Highlights
- 01
- GMC twin of the Chevrolet S-10, introduced as a 1982 model
- 02
- S-15 Jimmy SUV debuted for 1983
- 03
- Isuzu-sourced diesel offered 1984-85
Photos
GMC S-15 1982-1990, image 1 of 2
GMC S-15 1982-1990, image 2 of 2
Related
Overview
GMC introduced the S-15 alongside the Chevrolet S-10 as part of GM's first domestically built compact pickup program. It offered the same regular-cab short and long beds, an extended cab from 1983, and the same range of engines: Isuzu 1.9-liter gas four and 2.2-liter diesel early on, then the 2.5-liter Iron Duke, 2.8-liter V6 and from 1988 the 4.3-liter V6.
GMC set it apart with its own grille and trim packages such as "Sierra" and "High Sierra", and appearance options like the Gypsy Magic. The S-15 Jimmy SUV followed in 1983.
For 1991 the truck was renamed Sonoma and the Sierra trim names were retired so as not to be confused with the full-size Sierra pickup.