1986 GMC K1500 Suburban Service and Repair Manual
This factory service and repair manual for the 1986 GMC K1500 Suburban serves the 4-door sport utility body in three trims, Base, High Sierra and Sierra Classic. Only two engines are listed, the 6.2L diesel V8 and the 5.7L gasoline V8, both overhead-valve and naturally aspirated, which lets the engine section give each one full attention: clearances, specifications, torque values and diagnostic sequences. The chassis, driveline, brake, climate, electrical and body sections follow with their own procedures and complete wiring diagrams.
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
- 4-door sport utility
Trims covered
- Base
- High Sierra
- Sierra Classic
Known issues on the 1986 K1500 Suburban. No recalls stand against this model year and no owner complaints are logged with NHTSA, so the federal record is clean. The manual is left to do ordinary work, and it does it thoroughly: valve train and short block specifications for both V8s, injection and carburetion service as appropriate to each, cooling system procedures, transmission and axle overhaul, brake and steering adjustment with torque values, and diagnostic charts paired with the wiring diagrams for tracing a circuit fault.
