🏷️ Basic Information Identification Make: Chevrolet Model: Cavalier Year: 1990 Codes Platform Code: J-body 👋 Introduction Market Position Segment: Compact car, economy car Target Audience: Budget-conscious consumers, commuters, first-time car buyers Competitive Analysis Competitors: Ford Escort, Honda Civic, Toyota Corolla, Nissan Sentra, Dodge Neon (later years) Key Features Value Proposition: Affordability, fuel efficiency, reliability, practicality Manual Value Purpose: Empower owners and independent technicians with dealership-level repair and maintenance knowledge. 📋 Manual Details Coverage Areas Coverage: All 1990 Chevrolet Cavalier models and all repairs A-Z Page Count Pages: Detailed page count not provided, but extensive coverage implies hundreds of pages. Manual Type Type: Service and Repair Manual Language Language: English Format Format: Print (assumed, typical for this era and product description) 📖 Manual Coverage Systems Covered Powertrain: Engine, fuel system, ignition system, exhaust system, transmission (manual and automatic) Chassis: Brakes, steering, suspension, wheels, tires Electrical: Lighting, instrumentation, power accessories, wiring diagrams, diagnostics Body: Body panels, interior trim, climate control, safety systems (seat belts, airbags if applicable) Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections Diagnostics: Troubleshooting guides, symptom-based diagnostics, fault code interpretation Repair: Component removal, disassembly, inspection, repair, reassembly, and installation for all major systems Technical Depth Depth: Comprehensive, from basic adjustments to complete engine and transmission overhauls; vehicle-specific OEM level detail 📊 Manual Specifications File Format Format Type: Print Print Quality Quality: Professional OEM-quality printing, clear diagrams and text. Binding Type Binding: Perfect bound or spiral bound (typical for shop manuals for durability and lay-flat use). Paper Type Paper: Durable, matte finish paper to reduce glare and withstand workshop conditions. ⚙️ Engine Specifications Primary Engine Engine 1: 2.0L L4 SOHC (VIN Code '3') Engine 2: 2.3L L4 SOHC (VIN Code 'D', Quad 4 variant) Engine 3: 3.1L V6 SFI (VIN Code 'T', GM '3100' series) Performance Horsepower 2.0L: Approx. 96-100 hp Torque 2.0L: Approx. 116-120 lb-ft Horsepower 2.3L Quad4: Approx. 160 hp (High Output variant) Torque 2.3L Quad4: Approx. 155 lb-ft Horsepower 3.1L V6: Approx. 140 hp Torque 3.1L V6: Approx. 180 lb-ft Fuel System Fuel Delivery 2.0L: Throttle Body Injection (TBI) or Multi-Port Fuel Injection (MPFI) depending on sub-model/trim Fuel Delivery 2.3L: Multi-Port Fuel Injection (MPFI) Fuel Delivery 3.1L: Sequential Fuel Injection (SFI) Technical Details Engine Management System: ECM (Engine Control Module) with diagnostic capabilities Timing Belt 2.0L: Yes, belt-driven OHC Timing Belt 2.3L: Yes, chain-driven DOHC Timing Belt 3.1L: Yes, belt-driven OHC 🔧 Transmission Standard Standard Transmission Type: 5-speed manual transmission (e.g., Getrag 282 for V6) Optional Optional Transmission Type: 3-speed automatic transmission (e.g., THM-3T40) Optional Transmission Type 2: 4-speed automatic transmission (e.g., THM-440-T4 for V6) Features Drive Type: Front-Wheel Drive (FWD) Clutch Type: Hydraulically actuated (for manual transmissions) Fluid Specifications Automatic Transmission Fluid: Dexron-III (or equivalent specification) Manual Transmission Fluid: GL-4 gear oil (specific viscosity depends on application, e.g., 75W-90 or 80W-90) 📐 Dimensions Exterior Body Styles: Coupe, Sedan (4-door), Hatchback (2-door), Convertible Wheelbase: Approx. 101.2 inches (2570 mm) Length: Varies by body style, approx. 170-180 inches (4318-4572 mm) Weights Curb Weight: Approx. 2500-3000 lbs (1134-1361 kg), varies by model and options 🛡️ Safety Features Ratings NHTSA Ratings Driver Front Impact: Not explicitly available for 1990 model year in easily verifiable formats, but generally considered average for the era. IIHS Ratings: Not applicable for this model year. Active Features ABS: Optional on some models, standard on higher trims or performance variants Passive Features Airbags: Driver-side airbag standard on most 1990 models (introduced for the 1990 model year as standard equipment). Seat Belts: 3-point front seat belts, 2-point rear lap belts (optional 3-point rear belts on some models) 💡 Technology Features Infotainment Audio System: AM/FM stereo radio, cassette player, optional premium sound system Dashboard Features: Analog gauges (speedometer, tachometer, fuel, temp), warning lights, basic climate controls. Driver Assistance Cruise Control: Optional on most models Connectivity Connectivity Features: No modern connectivity features; basic wiring for optional accessories. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 3-6 months (refer to manual for specific engine type and oil used) Air Filter Replacement: Every 15,000-30,000 miles or as needed based on driving conditions Spark Plug Replacement: Every 30,000-60,000 miles (depending on plug type) Timing Belt Replacement: Typically 60,000-90,000 miles for belt-driven OHC engines, consult manual. Fluid Specifications Engine Oil Type Recommendation: API SG or SG/CD, SAE 5W-30 or 10W-30 (check manual for temperature ranges) Coolant Type: GM Recommended 'Type 1' antifreeze (green, ethylene glycol based) or equivalent Brake Fluid Type: DOT 3 Known Issues Common Problems 1: Head gasket leaks (especially on certain engine variants like the 2.3L Quad 4), aging plastic and rubber components, electrical system issues (corrosion, faulty grounds), exhaust system rust. Common Problems 2: Transmission seal leaks, power steering pump leaks, accessory drive belt wear. 📚 Vehicle History Brand Heritage Manufacturer: General Motors (GM), Chevrolet division Model Evolution Generation: Second Generation (J-body platform, 1987-1994)...