The 1986 Corvette Service Manual provides comprehensive technical information for maintaining and repairing the C4 generation Corvette. This manual covers engine systems (5.7L L98 V8), transmission (4-speed automatic or 4+3 manual), suspension, brakes, electrical systems, bodywork, and diagnostics. Essential for mechanics and enthusiasts, it includes specifications, troubleshooting procedures, wiring diagrams, and maintenance schedules specific to the 1986 model year.
Complete technical specifications for the 1986 Chevrolet Corvette.
| Specification | Details |
|---|---|
| Engine | 5.7L L98 V8 with Tuned Port Injection |
| Horsepower | 230 hp @ 4000 rpm |
| Torque | 330 lb-ft @ 3200 rpm |
| Transmission | 4-speed automatic or 4+3 manual |
| Wheelbase | 96.2 inches |
| Curb Weight | 3,245 lbs (automatic) |
| Fuel System | Electronic fuel injection |
| Brakes | Power-assisted disc brakes (4-wheel) |
| Suspension | Independent front and rear |
| Fuel Capacity | 20 gallons |
Detailed service procedures for the L98 5.7L V8 engine.
WARNING! Always disconnect battery before working on electrical components. Use proper lifting equipment for engine removal.
Service procedures for automatic and manual transmission systems.
CAUTION! Transmission fluid may be hot after operation. Allow proper cooling before service.
Complete brake system service and maintenance procedures.
Front Brakes: 11.5-inch vented discs with dual-piston calipers. Rear Brakes: 11.5-inch solid discs with single-piston calipers.
Brake pad replacement, rotor service, brake fluid flush procedures, ABS system diagnostics (if equipped), parking brake adjustment, and master cylinder service.
Wiring diagrams and electrical component service.
Tip: Always use multimeter for electrical diagnostics. Refer to wiring diagrams for proper circuit identification.
Fiberglass body repair and interior component service.
WARNING! Use proper safety equipment when working with fiberglass. Follow manufacturer guidelines for adhesive applications.
Recommended service intervals and procedures.
| Service Item | Interval | Procedure |
|---|---|---|
| Oil Change | 3,000 miles/3 months | 5W-30 motor oil, filter replacement |
| Coolant Flush | 30,000 miles/2 years | Drain and refill with 50/50 mix |
| Brake Fluid | 30,000 miles/2 years | Complete system flush |
| Transmission Fluid | 30,000 miles | Drain and refill with Dexron II |
| Spark Plugs | 30,000 miles | Replace with AC Delco R44LTS6 |
Common issues and diagnostic procedures.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel pump, ignition, security system | Check fuel pressure, spark, VATS system |
| Transmission slipping | Low fluid, worn clutches | Check fluid level and condition |
| Brake vibration | Warped rotors, worn pads | Inspect and replace rotors/pads |
| Electrical issues | Battery, alternator, grounds | Test charging system, check grounds |
| Overheating | Coolant leak, thermostat | Pressure test system, replace thermostat |
Complete electrical schematics for all systems.
Engine compartment wiring, dashboard circuits, lighting systems, power accessories, starting and charging systems, sensor locations and connections, ground distribution points, fuse panel layouts, and connector pinouts.
Factory service bulletins and updates.
Common issues addressed by GM technical service bulletins, recall information, updated repair procedures, part number revisions, and service campaign details specific to 1986 Corvette models.
Service Support: Contact GM Customer Service for technical assistance or visit authorized Chevrolet dealership for factory-trained support.