1984 GMC C2500 Service and Repair Manual

This factory service and repair manual for the 1984 GMC C2500 covers Base, High Sierra and Sierra Classic trims across three bodies: the crew cab pickup, the standard cab pickup and the cab and chassis. The engine coverage is the wide part, running to six units, from the 250 cubic inch 4.1L inline-six and the 292 cubic inch 4.8L inline-six up through the 5.0L, 5.7L and 7.4L gasoline V8s, with the 6.2L diesel V8 alongside them. Every one is overhead-valve and naturally aspirated.

Engines covered

• 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
• 4.1L inline-six (250 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
• 2-door cab & chassis

Trims covered

• Base
• High Sierra
• Sierra Classic

Known issues on the 1984 C2500. Each of the six engines gets its own specifications, clearances and torque values; the cab and chassis version brings frame and body mounting procedures the pickups do not need; and the brakes, steering, suspension, driveline and electrical system are documented with the diagnostic steps and wiring diagrams needed to trace a fault rather than guess at it.