This manual provides comprehensive service and repair information for the 1990 Chevrolet Corvette, part of the C4 generation (1984-1996). Engineered with a 350 ci (5.7L) L98 Tuned Port Injection V8 engine and a 4-speed automatic transmission, this rear-wheel-drive sports car is known for its performance-oriented design and handling. Key features include standard Anti-lock Braking System (ABS) and a driver's side airbag, reflecting the automotive technology of its era. The 1990 model, produced in Bowling Green, Kentucky, represents a refined iteration of the C4 platform, offering a blend of power and a distinctive aesthetic for enthusiasts. This manual serves as an essential resource for maintaining and repairing the 1990 Chevrolet Corvette. It covers a wide range of systems, including the engine, drivetrain, brakes, suspension, steering, electrical components, body, and HVAC. Detailed procedures for routine maintenance, such as oil changes and fluid replacements, as well as complex repair tasks like engine rebuilds and electrical diagnostics, are thoroughly explained. Troubleshooting guides and wiring diagrams are also included to assist owners, mechanics, and technicians in diagnosing and resolving issues, ensuring the longevity and optimal performance of the vehicle.