1987 GMC R2500 Suburban Service and Repair Manual
This factory service and repair manual for the 1987 GMC R2500 Suburban covers the four-door sport utility in Base, High Sierra and Sierra Classic trim. Three naturally aspirated overhead-valve V8s are listed: a 7.4L of 454 cubic inches, a 6.2L diesel of 379 cubic inches and a 5.7L of 350 cubic inches. Putting a large gasoline V8 and a diesel in the same wagon body means two fuel and cooling strategies to service, and the manual gives each its 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
- High Sierra
- Sierra Classic
Known issues on the 1987 R2500 Suburban. Nothing shows up for this Suburban in the federal database — no recall campaigns, and not one owner complaint. With nothing flagged, the manual's job is the everyday one: keeping a 454 cubic inch V8 or a 6.2L diesel in tune, servicing the brakes and suspension that carry a long wagon body and its load, and tracing circuits through a vehicle with far more interior wiring than a pickup. Procedures, specifications, torque values, wiring diagrams and diagnostics are provided for each of those systems.
