The 1987 Chevrolet Light Duty Truck Service Manual provides comprehensive technical information for servicing and maintaining Chevrolet light duty trucks from the 1987 model year. This manual covers engine systems, transmission, brakes, suspension, electrical systems, and routine maintenance procedures for models including C10, C20, K10, and K20 series trucks.
Overview of 1987 Chevrolet light duty truck models, vehicle identification, and service procedures.
| Model Series | Description |
|---|---|
| C10 | 2WD half-ton pickup |
| C20 | 2WD three-quarter ton pickup |
| K10 | 4WD half-ton pickup |
| K20 | 4WD three-quarter ton pickup |
| R10 | 2WD Suburban |
| VIN Locations | Driver side dashboard, door jamb |
| Service Intervals | Every 7,500 miles or 12 months |
| Fluid Capacities | Engine oil: 5 quarts, coolant: 15 quarts |
| Lubrication Points | Chassis, steering, suspension components |
| Safety Precautions | Always use jack stands, disconnect battery |
Detailed procedures for engine maintenance, repair, and overhaul.
WARNING! Allow engine to cool before servicing cooling system. Use proper safety equipment.
Service procedures for manual and automatic transmissions, transfer cases, and differentials.
CAUTION! Support vehicle securely when working underneath. Use transmission jack for removal.
Front and rear suspension service, alignment procedures, and steering system maintenance.
Front Suspension: Control arms, ball joints, torsion bars (4WD), coil springs (2WD)
Rear Suspension: Leaf spring inspection, shackle replacement, shock absorbers
Steering: Gearbox adjustment, pitman arm, tie rods, alignment specifications. Wheel Alignment: Camber, caster, toe adjustment procedures. Tire Rotation: Recommended patterns and intervals.
Battery, starting, charging, lighting, and accessory electrical systems.
Tip: Always disconnect battery negative cable before electrical work.
Body panel service, door adjustment, glass replacement, and interior component repair.
WARNING! Use proper tools for glass removal. Support heavy components during service.
Factory recommended maintenance intervals and service procedures.
Diagnostic procedures for common problems and performance issues.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Hard starting | Fuel delivery, ignition timing | Check fuel pressure, verify timing, inspect plugs |
| Overheating | Cooling system, thermostat | Pressure test system, replace thermostat, flush radiator |
| Brake pull | Calipers, fluid contamination | Inspect calipers, replace fluid, check alignment |
| Electrical drain | Alternator, accessories | Perform draw test, inspect diodes, check circuits |
| Transmission slip | Fluid level, bands | Check fluid, adjust bands, inspect clutch packs |
Diagnostic Tools: Multimeter, compression tester, vacuum gauge required.
Technical specifications for all major components and systems.
Complete electrical schematics for all truck models and options.
Copyright © 1987 General Motors Corporation. All rights reserved. This service manual contains proprietary technical information for authorized service personnel. For additional support, contact Chevrolet Customer Service or authorized dealerships.