🏷️ Basic Information Identification Make: Chevrolet Model: Corvette C4 Year: 1988 Model Code: C4 Series Designation: ZR-1 (N/A for 1988 models covered by this manual, but the platform existed) 👋 Introduction Market Position Market Position: Essential DIY resource for 1988 Corvette C4 owners looking to perform their own maintenance and repairs, significantly reducing labor costs. Competitive Analysis Competitive Advantage: Provides comprehensive coverage as a factory-level service manual, enabling owners to tackle a wide range of tasks often requiring specialized dealer tools or knowledge. Key Features Key Features: Step-by-step instructions, detailed diagrams/pictures, troubleshooting guides, cross-platform compatibility (PC, MAC, tablets, phones), instant digital delivery. 📋 Manual Details Coverage Areas Coverage Scope: Complete Service and Repair Procedures for all models, engines, trims, and transmissions. Page Count Page Count: Detailed page count not specified in product information, but described as 'Complete Workshop Service Repair Manual.' Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital Format (PDF compatible) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, exhaust system, cooling system, lubrication system. Chassis: Suspension (front and rear), steering system, braking system (including ABS if applicable). Drivetrain: Transmission (automatic and manual), clutch, driveshafts, differential, axles. Electrical: Wiring diagrams, starter, alternator, battery, lighting, instrumentation, power accessories, engine control module (ECM) diagnostics. Body And Interior: Body panels, doors, windows, seats, trim, HVAC system, body control modules. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), symptom-based diagnosis. Repair: Step-by-step instructions for component removal, overhaul, and installation. Adjustment: Calibration and adjustment of various systems (e.g., engine timing, parking brake). Technical Depth Depth: Comprehensive, from basic maintenance to advanced engine and transmission rebuilds, including electrical diagnostics. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Print Quality: High quality, suitable for printing individual pages or entire sections. Features step-by-step instructions and pictures. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: L98 (for 1988) Engine Description: 5.7L (350 cubic inch) Tuned Port Injection (TPI) V8 Performance Horsepower: Approximately 230-245 hp (varies slightly by specific tune and emissions standards). Torque: Approximately 315-330 lb-ft. Fuel System Fuel Delivery: Sequential Port Fuel Injection (SFI) with Tuned Port Injection (TPI) intake manifold. Fuel Type: Unleaded gasoline Ignition System Ignition Type: High Energy Ignition (HEI) with electronic spark control (ESC) and knock sensor. 🔧 Transmission Standard Transmission Type: 4-speed automatic (700R4/4L60) Optional Transmission Type: 6-speed manual (ZF S6-40) Features Clutch Type: Hydraulic clutch actuation for manual transmission. Fluid Specifications Automatic Transmission Fluid: Dexron-III (or equivalent specification) Manual Transmission Fluid: GM Synchromesh (or equivalent API GL-4/GL-5 spec) 📐 Dimensions Exterior Length: Approximately 178.5 inches Width: Approximately 71.0 inches Height: Approximately 46.4 inches Wheelbase: Approximately 98.0 inches Weights Curb Weight: Approximately 3200-3400 lbs (depending on transmission and options) 🛡️ Safety Features Ratings NHTSA Front Impact Rating: Not explicitly rated by NHTSA in modern standardized format for this era, but designed with crumple zones. Active Features Antilock Braking System: Available ABS (Anti-lock Braking System) on all four wheels, a significant technological advancement for its time. Passive Features Airbags: Driver-side airbag standard; passenger-side airbag not standard for 1988. Seatbelts: Three-point retractable seatbelts Roll Bar: Integrated safety cage structure with a prominent windshield header and behind-seat structure. 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with cassette player, optional CD player. Speaker configuration typically includes front and rear units. Driver Assistance Cruise Control: Standard cruise control system. Climate Control: Manual or optional automatic climate control (ACC) system. Connectivity Diagnostics Port: OBD-I (On-Board Diagnostics) diagnostic connector for engine management system data retrieval. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles or 6 months, depending on driving conditions (consult manual for specifics). Transmission Fluid Change: Recommended every 30,000-50,000 miles for automatic transmission; manual transmission fluid inspection and potential change based on mileage and condition. Spark Plug Replacement: Generally around 30,000-60,000 miles, depending on spark plug type (e.g., platinum). Fluid Specifications Engine Oil Type: SAE 5W-30 API SG/SH (check manual for specific viscosity and certification) Coolant Type: GM Goodwrench (Dex-Cool equivalent) or equivalent 50/50 antifreeze/water mixture Brake Fluid Type: DOT 3 Known Issues Tpi System Issues: Potential for vacuum leaks in the TPI system, injector issues, and fuel pressure regulator problems. Suspension Wear: Wear in control arm bushings, ball joints, and steering components due to age and performance driving. Electrical Gremlins: Age-related issues with wiring harnesses, sensors, and electronic control modules can manifest. 📚 Vehicle History Brand Heritage Brand Heritage Association: Continuation of Chevrolet's long-standing legacy in performance vehicles and sports cars. Model Evolution C4 Generation Evolution: The C4 Corvette, introduced in 1984, underwent continuous refinement. The 1988 model represented a significant step in this evolution, including the introduction of the ZF 6-speed manual transmission...