🏷️ Basic Information Identification Make: Chevrolet Model: S10 Pickup Year: 1990 Product Type: Complete Workshop Service Repair Manual Product Format: Downloadable 👋 Introduction Market Position Target Audience: DIY mechanics, home repair enthusiasts, professional technicians seeking reference. Competitive Analysis Value Proposition: Enables users to perform their own repairs, saving significant costs compared to dealership or independent shop labor. Key Features Instruction Style: Easy-to-follow step-by-step instructions with clear pictures. Delivery Method: Instant email delivery upon payment. Licensing: Lifetime ownership and usage rights. 📋 Manual Details Coverage Areas Models Covered: All models, engines, trim levels, and transmission types for 1990 Chevrolet S10 Pickup. Page Count Estimated Page Count: Extensive (Specific page count not provided, but implied to be comprehensive A-Z coverage). Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format File Format: Digital (PDF compatible) 📖 Manual Coverage Systems Covered Powertrain: Engine (all variants), Fuel System, Cooling System, Exhaust System, Transmission (manual and automatic), Drivetrain (RWD, 4WD). Chassis: Suspension (front and rear), Steering System, Brakes (front and rear systems, parking brake), Wheels and Tires. Electrical: Starting System, Charging System, Ignition System, Lighting System, Instrumentation, Wiper/Washer System, Horn, Power Accessories, Audio System, Wiring Diagrams. Body: Body Panels, Doors, Windows, Seats, Interior Trim, Exterior Trim, Bumpers, Glass, HVAC System (Heating, Ventilation, Air Conditioning). Procedures Included Maintenance: Routine checks, fluid changes, filter replacements, lubrication, tire rotation, brake pad inspection. Troubleshooting: Diagnostic charts for common problems, symptom-based diagnosis for engine, electrical, and mechanical issues. Repair: Detailed step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation for all major systems. Component Overhaul: Procedures for rebuilding engines, transmissions, differentials, and other major components. Specifications: Torque specifications, clearances, fluid capacities, diagnostic values, and test procedures. Technical Depth Diagnostic Capabilities: Advanced diagnostic procedures, including specific troubleshooting trees and expected readings. Rebuild Procedures: Comprehensive instructions for complete engine and transmission rebuilds, including component specifications and tolerances. Electrical Diagnostics: Detailed wiring diagrams, component location guides, and troubleshooting steps for all electrical systems. 📊 Manual Specifications File Format Compatibility: Compatible with all PC & MAC Computers, tablets, and mobile phones. Requires Adobe Reader. Print Quality Printability: Printable by page, chapter, or entire manual. Binding Type Binding Type: Digital Download (No physical binding) Paper Type Paper Type: Digital (Not applicable) ⚙️ Engine Specifications Primary Engine Engine Options: 2.5L 4-Cylinder (LQ5), 4.3L V6 (LB4). Performance 2.5L 4-Cylinder (Lq5) Estimated Hp: Approx. 98 hp 2.5L 4-Cylinder (Lq5) Estimated Torque: Approx. 132 lb-ft 4.3L V6 (Lb4) Estimated Hp: Approx. 160 hp 4.3L V6 (Lb4) Estimated Torque: Approx. 230 lb-ft Fuel System Fuel Delivery 2.5L: Throttle Body Injection (TBI) Fuel Delivery 4.3L: Throttle Body Injection (TBI) 🔧 Transmission Standard Standard Transmission: 4-Speed Manual (NVG SM465 often optional, others possible) Optional Optional Transmission: 4-Speed Automatic (700R4, THM200-4R) Features Drivetrain Options: Rear Wheel Drive (RWD), Four-Wheel Drive (4WD) 📐 Dimensions Exterior Body Styles: Regular Cab, Extended Cab Wheelbase Regular Cab: 118.0 inches (2997 mm) Wheelbase Extended Cab: 129.7 inches (3294 mm) Cargo Bed Lengths: Short Bed (73.9 inches), Long Bed (97.9 inches) Weights Curb Weight Range: Approx. 3,200 - 4,000 lbs (1451 - 1814 kg) depending on configuration. 🛡️ Safety Features Ratings NHTSA Ratings 1990: Information for 1990 is not readily available; later models saw improvements. The manual will detail safety system checks. Active Features Braking System: Front disc brakes, rear drum brakes. Anti-lock braking system (ABS) was available as an option, primarily on 4WD models. Passive Features Restraint Systems: Seat belts (lap and shoulder belts for front occupants). Airbags were not standard in 1990. 💡 Technology Features Infotainment Audio System Options: Basic AM/FM radio, AM/FM stereo with cassette player. Driver Assistance ABS Availability: Optional Anti-lock Braking System (ABS). Connectivity Connectivity Features: Limited by era; primarily focused on basic vehicle operation and entertainment. No advanced connectivity features. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 - 5,000 miles (4,800 - 8,000 km) or 6 months, depending on driving conditions and oil type. Manual will specify. Air Filter Replacement: Recommended every 12,000 - 15,000 miles (19,300 - 24,100 km) or as needed based on inspection. Spark Plug Replacement: Varies by engine; typically around 30,000 miles (48,300 km) for conventional plugs. Fluid Specifications Engine Oil Type: Consult manual for specific viscosity (e.g., 5W-30, 10W-30) and API service classification based on engine and climate. For LB4 V6, typically 10W-30. Coolant Type: Ethylene glycol based coolant (green). Transmission Fluid Manual: GL-4 gear oil, typically 75W-90 or 80W-90. Transmission Fluid Automatic: Dexron II or equivalent. Brake Fluid Type: DOT 3. Known Issues Engine Vibration 4.3L: Potential for rough idle or vibration due to worn engine mounts or balance shaft issues. Tbi Performance: Throttle Body Injection (TBI) systems can be prone to clogging or sensor issues, affecting performance and fuel economy. Rear Main Seal Leaks: Common on many vehicles of this era, the rear main seal can develop leaks over...