1988 Chevrolet P30 Service and Repair Manual

This factory service and repair manual for the 1988 Chevrolet P30 spans 292 to 454 cubic inches of engine and two ways of building a truck on top. The inline-six, the 5.7L and 7.4L gasoline V8s and the 6.2L diesel V8 all share the chassis, which reached customers as a two-door van or as bare rails, in Base Stripped and Step-Van Delivery form. Rather than treating that spread as one machine, the manual splits its specifications, torque values, wiring diagrams and diagnostics by system and by engine.

Engines covered

• 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

• 2-door van
• Chassis

Trims covered

• Base Stripped
• Step-Van Delivery

Known issues on the 1988 P30. The manual supplies the reference material: compression and valve specifications, fuel and ignition service across gasoline and diesel, cooling, charging and starting diagnostics, clutch, transmission and rear axle procedures, brake hydraulics, steering and front suspension adjustment, and the wiring diagrams a technician needs when tracing a circuit that runs into body work fitted by an outside builder.