1986 GMC C3500 Service and Repair Manual
This factory service and repair manual for the 1986 GMC C3500 has a wide spread of hardware to account for: five engines and five body configurations. The engines are the 5.0L, 5.7L and 7.4L gasoline V8s, the 4.8L inline-six and the 6.2L diesel V8; the bodies include crew cab, standard cab and extended cab pickups plus cab-and-chassis versions with two or four doors. Base, High Sierra and Sierra Classic are the trims. The manual sorts all of that by system, with specifications, torque values, wiring diagrams and diagnostics.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 4.8L inline-six (292 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 4-door crew cab pickup
- 2-door standard cab pickup
- 4-door cab & chassis
- 2-door cab & chassis
- 2-door extended cab pickup
Trims covered
- Base
- High Sierra
- Sierra Classic
Known issues on the 1986 C3500. One recall touches this model year, and it is an equipment matter: replacement oil filters that may not seal properly, letting engine oil escape and raising a fire risk. NHTSA also holds a single owner complaint, on the tires. Neither points at a deep design fault, so the practical use of the manual lies elsewhere — in the engine, driveline, brake, steering and suspension procedures, and in the lubrication specifications and torque values that keep an oil change from becoming the kind of leak that recall describes.
CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. TH
THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.
HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 20
REAR DUAL TIRES FELL OFF CAUSING VEHICLE TO ROLL OVER. (OHIO STATE POLICE REPORT)
