1990 GMC Jimmy Service and Repair Manual

This factory service and repair manual for the 1990 GMC Jimmy documents the 2-door sport utility in Base and Sierra Classic trim, with a choice of two overhead-valve, naturally aspirated V8s: the 6.2L diesel and the 5.7L gasoline engine. Coverage is organized so a shop can move from engine mechanical and fuel work through the transmission and driveline and on to steering, brakes, heating and the electrical system, picking up procedures, specifications, torque values, wiring diagrams and diagnostics for each system along the way.

Engines covered

• 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door sport utility

Trims covered

• Base
• Sierra Classic

Known issues on the 1990 Jimmy. One recall is recorded federally for this year, covering replacement lamps that lack amber side reflectors and leave the vehicle poorly illuminated. Of the twelve owner complaints logged with NHTSA, half of them, six, concern the service brakes, with two more on the seats and one on steering. That makes the brake chapter the one to reach for, with hydraulic overhaul, drum and rotor specifications, adjustment procedures and torque values, backed up by steering gear and linkage service and the seat hardware procedures in the body section.