1989 GMC R2500 Suburban Service and Repair Manual
This factory service and repair manual for the 1989 GMC R2500 Suburban documents a vehicle whose specification sheet is short but whose service demands are not: one body, the four-door sport utility; two trims, Base and Sierra Classic; and three naturally aspirated overhead-valve V8s at 7.4, 6.2 and 5.7 liters, the middle one a diesel. Engine, driveline, chassis, brake and body electrical work each get their own procedures, specifications, torque values, wiring diagrams and diagnostics.
Engines covered
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 4-door sport utility
Trims covered
- Base
- Sierra Classic
Known issues on the 1989 R2500 Suburban. The 1989 R2500 Suburban carries a clean federal record, with neither recalls nor owner complaints on it. Attention goes instead to the maintenance that keeps a vehicle like this usable: injection timing and glow plug diagnosis on the 6.2L diesel, ignition and fuel work on the 7.4L and 5.7L gasoline V8s, brake and steering overhaul, and axle and transmission service. The manual supplies procedures, specifications, torque values, wiring diagrams and diagnostics for all of them.
