1986 GMC G2500 Service and Repair Manual
This factory service and repair manual for the 1986 GMC G2500 takes in three van bodies, a 3-door standard cargo van along with extended cargo and extended passenger versions, and the three trims sold on them, Rally, Rally STX and Vandura. Engine choice runs four deep and mixes fuels: the naturally aspirated 4.3L V6 of 262 cubic inches, the 5.0L V8 of 305, the 5.7L V8 of 350 and the 6.2L diesel V8 of 379, every one an overhead-valve design. Coverage is by system, with procedures, specifications, torque values, wiring diagrams and diagnostics.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 3-door standard cargo van
- 3-door extended passenger van
- 3-door extended cargo van
Trims covered
- Rally
- Rally STX
- Vandura
Known issues on the 1986 G2500. One recall sits on the federal record for the 1986 G2500, and it concerns replacement oil filters that may not seal properly, allowing engine oil to escape and raising the risk of a fire. A single owner complaint is logged with NHTSA, recorded under visibility. Both send you back to ordinary bench work: the engine service procedures, lubrication specifications and torque values here cover sealing at the filter mounting, while the body and glass sections carry the wiring diagrams and diagnostics behind a visibility problem.
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
HEATER BLOWER MOTOR FAILED CAUSING VEHICLE FIRE, STARTING IN THE DASH BOARD AREA.
