1990 GMC S15 Jimmy Service and Repair Manual
This factory service and repair manual for the 1990 GMC S15 Jimmy is built around a single engine, a 4.3L overhead-valve V6 of 262 cubic inches, in a two-door sport utility offered as a Base, a Gypsy or a Sierra Classic. One engine and one body make for concentrated coverage: every procedure, specification, torque value, wiring diagram and diagnostic routine in the book applies to the vehicle in front of you, with no cross-referencing between variants to get wrong.
Engines covered
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door sport utility
Trims covered
- Base
- Gypsy
- Sierra Classic
Known issues on the 1990 S15 Jimmy. The federal record for this Jimmy carries three recall campaigns. Two concern replacement lamp assemblies built without the amber side reflectors that federal lighting rules require. The third covers cooling fan blades that break from fatigue, a hazard to anyone standing near the engine while it runs. Three complaints from owners sit alongside them, reaching into engine and engine cooling and into the electrical system. Fan and cooling system service, drive belt and accessory procedures, and the wiring diagrams and diagnostics for the charging and lighting circuits are all set out here.
