1986 GMC P2500 Service and Repair Manual

This factory service and repair manual for the 1986 GMC P2500 is a working reference for a truck sold two ways, as a two-door delivery van and as a chassis, in Base Stripped and Value form. Its engine coverage is three deep and consistent in character, overhead-valve and naturally aspirated, one diesel and two gasoline: the 6.2L V8, the 4.8L inline-six and the 5.7L V8. Everything is organized by system, from removal and installation steps through specifications, torque values, wiring diagrams and the diagnostic sequences that accompany them.

Engines covered

• 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

• 2-door van delivery van
• Chassis

Trims covered

• Base Stripped
• Value

Known issues on the 1986 P2500. The manual's value is in the day-to-day: it walks the 4.8L inline-six, the 5.7L V8 and the 6.2L diesel through their procedures, states the specifications and torque values those jobs depend on, and maps the wiring so an intermittent circuit can be chased with a diagram instead of a guess.