1983 GMC S15 Service and Repair Manual
This factory service and repair manual for the 1983 GMC S15 lists an extended cab pickup alongside the standard cab and the cab and chassis, and a Gypsy trim beside Base, High Sierra and Sierra Classic. Three gasoline engines are covered: a 2.8L overhead-valve V6 at 173 cubic inches, a 2.0L overhead-valve inline-four at 122 cubic inches, and a 1.9L single-overhead-cam inline-four at 119 cubic inches. Each of them is given its own procedures, specifications, torque values, wiring diagrams and diagnostics.
Engines covered
- 2.8L V6 (173 cu in) — OHV, naturally aspirated, gasoline
- 2.0L inline-four (122 cu in) — OHV, naturally aspirated, gasoline
- 1.9L inline-four (119 cu in) — SOHC, naturally aspirated, gasoline
Body styles covered
- 2-door extended cab pickup
- 2-door cab & chassis
- 2-door standard cab pickup
Trims covered
- Base
- Gypsy
- High Sierra
- Sierra Classic
Known issues on the 1983 S15. No recalls have been issued against the 1983 S15 and no owner complaints are on the federal record. Read as a shop reference rather than a warning list, the manual's most-used material is the engine section, where three units with different valvetrains each need their own timing, clearance and torque figures, followed by the driveline, brake and front suspension procedures. Specifications and diagnostic routines run alongside, and the wiring diagrams cover both pickup bodies and the cab and chassis.
REAR WHEELS MAY LOCK SUDDENLY DUE TO INSUFFICIENT LUBRICATION BETWEEN MAINSHAFT AND FIRST GEAR.
DEALER WILL REPLACE TRANSMISSION FLUID WITH A BLENDED FLUID AND IN ADDITION, WILL UPDATE THE MAINTEN
