Product Name:
Chevrolet CORVETTE C4 1984-1996 V8 Workshop Service Repair Manual
Applicable Years:
1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Engine Code:
350L (LT1, LT4, L98 variations implied)
Engine Systems:
Engine Mechanical (including assembly, disassembly, internal components), Engine Performance & Tune-Up (ignition timing, fuel mixture, idle speed), Engine Reconditioning (overhaul procedures, component specifications), Engine Control (ECU, sensors, actuators), Fuel System (injectors, pump, lines, pressure), Exhaust System (catalytic converter, mufflers, pipes).
Drivetrain Systems:
Automatic Transmission (service, overhaul, diagnosis), Manual Transmission (service, overhaul, diagnosis), Driveline (axles, driveshafts, CV joints), Clutch System (operation, adjustment, replacement).
Chassis Systems:
Brake System (hydraulic, ABS, disc brakes, parking brake), Suspension (components, alignment, adjustment), Steering System (power steering, steering rack/gearbox), Wheels and Tires (sizing, mounting, balancing), Driveline (rear axle, limited slip differential if applicable).
Electrical Systems:
Charging System (alternator, regulator, battery), Starting System (starter motor, solenoid, ignition switch), Chassis Electrical (wiring harnesses, body control modules, lighting, accessories), Instruments and Lighting (dashboard, gauges, exterior lights), Audio System (component layout, wiring), Cruise Control, Wiper and Washer System.
Repair And Diagnostics:
• Component disassembly and reassembly
• Troubleshooting guides with symptom-based diagnosis
• Component testing procedures
• Torque specifications for critical fasteners
• Clearance and adjustment procedures
• Wiring diagram interpretation and tracing
• Diagnostic trouble code (DTC) lookup and interpretation (if applicable for the era)
• Rebuild instructions for major components
Maintenance:
• Scheduled maintenance items
• Fluid type and capacity specifications
• Filter replacement procedures
• Lubrication points and specifications
• Tune-up procedures
Depth:
Comprehensive. Covers everything from basic maintenance and fluid changes to complete engine and transmission overhauls, electrical system diagnostics, and bodywork repairs. Suitable for both DIY enthusiasts and professional technicians.
Digital Quality:
High-resolution scans with searchable text capabilities (if PDF). Clear, legible print quality for physical copies.
Binding:
Sturdy binding (e.g., spiral bound, perfect bound) suitable for workshop use, allowing the manual to lay flat.
Paper Quality:
Durable, heavy-stock paper to withstand grease and workshop conditions.
Engine Type:
V8, Naturally Aspirated
Engine Displacement:
5.7 Liters (350 cubic inches)
Engine Block Material:
Cast Iron (typical for L98, LT1)
Cylinder Head Material:
Aluminum (typical for LT1, LT4)
Horsepower Range:
Approximately 230 hp (L98) to 330 hp (LT4) depending on specific engine variant and year.
Torque Range:
Approximately 315 lb-ft (L98) to 340 lb-ft (LT4) depending on specific engine variant and year.
Fuel Delivery:
Bosch Port Fuel Injection (PFI) for L98, Tuned Port Injection (TPI) for earlier models, Sequential Port Fuel Injection (SFI) for LT1/LT4.
Fuel Type:
Unleaded Gasoline
Ignition Type:
Distributorless Ignition System (DIS) on LT1/LT4, traditional distributor on L98.
Automatic Transmission Model:
4-speed 4L60/4L65E (varying versions throughout C4 production)
Manual Transmission Model:
4-speed Doug Nash (early models), 6-speed ZF S6-40 (1989-1996)
Automatic Transmission Features:
Overdrive gear, electronic control (later models)
Manual Transmission Features:
Close-ratio gearing (ZF transmission), high torque capacity
NHTSA Rating:
Specific ratings vary by year and crash test methodology. Generally considered safe for its era, but without modern driver aids.
Anti Lock Brakes:
Standard on most models from 1986 onwards, with variations in ABS system design.
Traction Control:
Optional on some models, particularly those with the 6-speed manual.
Airbags:
Driver-side airbag standard from 1990 onwards. Passenger airbag optional/standard in later years.
Seat Belts:
Three-point retractable seat belts
Rollover Protection:
Reinforced windshield frame and B-pillar structure on coupe models. Convertible models had a removable targa top and often an optional pop-up bar behind the seats.
Oil Change Interval:
Typically every 3,000-5,000 miles or 6 months, depending on driving conditions and oil used. Refer to manual for specific recommendations based on oil type (e.g., synthetic).
Transmission Fluid Change:
Every 30,000-50,000 miles for automatic transmissions, check manual for manual transmission service.
Spark Plug Replacement:
Varies by plug type. Platinum/iridium plugs can last up to 100,000 miles, while conventional plugs may require replacement every 30,000-50,000 miles.
Engine Oil Type:
SAE 5W-30 or 10W-30 recommended (check specific year and temperature range). API Service SG, SH, or SJ rated.
Coolant Type:
Ethylene Glycol based coolant (green or orange depending on formulation). Typically a 50/50 mix with distilled water. Dex-Cool compatible coolant may be used in later models but confirm compatibility.
Brake Fluid Type:
DOT 3 or DOT 4.
Power Steering Fluid:
GM Power Steering Fluid (Type A Suffix A or equivalent)
Transmission Fluid Automatic:
Dexron-III (or equivalent) for 4L60/4L65E.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil, SAE 75W-90 or 80W-90 (check specific transmission type).
Common Problems:
• Optics wear (headlight actuators, climate control buttons)
• Vibration issues (driveshaft imbalance, U-joints)
• Cooling system leaks (radiator, hoses, water pump)
• C4 Corvette's specific ABS controller failures
• Electrical gremlins (chassis wiring, grounds)
• LT1 optispark distributor failures (moisture ingress)
• Aging interior materials (dash cracks, seat wear)
• Fuel pump reliability
• Clutch hydraulic system leaks (master/slave cylinders)
Manufacturer:
Chevrolet (General Motors)
C4 Generation Timeline:
1984-1996. Introduced significant design and technological updates from previous generations, including a more modern chassis, updated aerodynamics, and new engine technologies.
Manufacturing Location:
Bowling Green, Kentucky, USA
Major Facelifts Updates:
• 1984: Introduction of C4 with all-new chassis, interior, and exterior.
• 1985: Introduction of Tuned Port Injection (TPI) V8 (L98).
• 1989: Introduction of the ZF 6-speed manual transmission.
• 1992: Major facelift including new front and rear fascias, interior updates, and the introduction of the LT1 engine.
• 1994: Introduction of the LT4 engine (limited production, higher output).
• 1996: Final year of C4 production, special collector editions offered.
