🏷️ Basic Information Identification Make: Kia Model: Optima Year: 2004 Codes Platform: GD Generation Generation: Second Generation (MS) 👋 Introduction Market Position Vehicle Segment: Mid-size sedan Competitive Analysis Key Competitors 2004: Toyota Camry, Honda Accord, Nissan Altima, Ford Fusion, Chevrolet Malibu Key Features Model Selling Points: Value for money, comfortable ride, spacious interior, improving reliability, stylish design Manual Value Proposition Target Audience: DIY mechanics, independent repair shops, Kia enthusiasts, fleet maintenance 📋 Manual Details Coverage Areas Engine Coverage: 2.4L (G4JS), 2.7L (G6BA) gasoline engines Transmission Coverage: 4-speed automatic transmission (F4A51), 5-speed manual transmission (M5HF2) Chassis Coverage: Front suspension (MacPherson strut), Rear suspension (Multi-link beam), Steering system (Hydraulic power steering), Brake system (Front ventilated discs, Rear solid discs), ABS, Traction Control System (TCS) Electrical Coverage: Engine control systems, Body control modules, Powertrain control modules, Climate control systems, Audio systems, Lighting systems, SRS airbag systems, Anti-theft systems, Wiring diagrams Page Count Estimated Page Count: 1500+ Manual Type Manual Type: Official Factory Service & Repair Manual Software Language Language: English Format Format: Digital Software (likely PDF or proprietary application) File Format Details: Searchable PDF, potentially requiring specific software for access and viewing Print Quality Print Quality Suitability: Suitable for high-quality printing of individual sections or the entire manual Binding Type Binding Type If Printed: Not applicable for software, but factory manuals are typically perfect-bound or spiral-bound Paper Type Paper Type If Printed: Not applicable for software, but factory manuals use durable, high-gloss paper 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, lubrication, cooling, fuel delivery, ignition, emissions control, engine diagnostics Transmission Systems: Automatic transmission service, manual transmission service, clutch system, driveline components Brakes And Suspension: Brake system overhaul, ABS diagnostics, suspension component replacement, steering system repair Electrical And Electronics: Instrument cluster, power windows, power locks, lighting, audio, comfort controls, advanced diagnostics for ECUs, wiring diagrams Body And Interior: Body panel repair, interior trim removal/installation, HVAC system service, seats, safety restraints Procedures Included Maintenance Procedures: Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, belt inspection and replacement Diagnostic Procedures: Troubleshooting guides, diagnostic trouble codes (DTCs) interpretation, component testing procedures Repair Procedures: Engine component overhaul (e.g., cylinder head, pistons), transmission rebuilds, brake caliper replacement, suspension arm replacement, electrical component repair Calibration And Adjustment: Throttle body cleaning and relearn, idle speed adjustments, wheel alignment specifications Technical Depth Diagnostic Depth: Advanced diagnostic procedures including signal tracing, component testing, and ECU parameter analysis Repair Depth: Detailed step-by-step repair instructions, torque specifications, special tool requirements, and component tolerances for complete rebuilds Wiring Diagrams Quality: Comprehensive, color-coded wiring diagrams with component locations and connector pinouts ⚙️ Engine Specifications Primary Engine 2.4L Engine Code: G4JS 2.4L Engine Type: Inline-4, DOHC, 16-valve 2.4L Displacement: 2351 cc (143.5 cu in) 2.4L Bore X Stroke: 86.7 mm x 97.0 mm 2.4L Compression Ratio: 9.5:1 2.4L Horsepower: 144 hp @ 5500 rpm 2.4L Torque: 152 lb-ft @ 4000 rpm Optional Engine 2.7L Engine Code: G6BA 2.7L Engine Type: V6, DOHC, 24-valve 2.7L Displacement: 2656 cc (162.1 cu in) 2.7L Bore X Stroke: 86.7 mm x 75.0 mm 2.7L Compression Ratio: 9.6:1 2.7L Horsepower: 170 hp @ 5500 rpm 2.7L Torque: 181 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (MPI) Recommended Fuel: 87 Octane Unleaded Gasoline 🔧 Transmission Standard Standard Transmission: 5-speed Manual Transmission (M5HF2) Optional Optional Transmission: 4-speed Automatic Transmission (F4A51) with Shiftronic Features Automatic Transmission Features: Electronically controlled, adaptive shift logic, lock-up torque converter Fluid Specifications Automatic Transmission Fluid: Kia Genuine ATF SP-III or equivalent (e.g., Dexron III/Mercon equivalent, but SP-III preferred for longevity) Manual Transmission Fluid: API GL-4, SAE 75W-90 synthetic gear oil 📐 Dimensions Exterior Length: 187.6 inches (4765 mm) Width: 70.5 inches (1790 mm) Height: 57.1 inches (1450 mm) Wheelbase: 106.3 inches (2700 mm) Front Track: 60.6 inches (1540 mm) Rear Track: 60.4 inches (1535 mm) Weights Curb Weight Approx: 3300 - 3500 lbs (1497 - 1588 kg) depending on engine and trim Gross Vehicle Weight Rating Gvw Approx: 4500 - 4700 lbs (2041 - 2132 kg) Towing Capacity: Not recommended/available 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 5 Stars (2004 Model Year) NHTSA Front Impact Passenger: 5 Stars (2004 Model Year) IIHS Front Offset Crash Test: Good (for vehicles with similar structure) Active Features Active Safety Features: Anti-lock Braking System (ABS), Traction Control System (TCS - optional on some trims), Electronic Brake-force Distribution (EBD) Passive Features Passive Safety Features: Dual front airbags, front side-impact airbags, front and rear side-curtain airbags (optional), three-point seat belts with pretensioners, LATCH child seat anchors 💡 Technology Features Infotainment Infotainment System: Standard AM/FM/CD player, optional cassette player, optional premium audio system with subwoofer Driver Assistance Driver Assistance Features: Cruise control Connectivity Connectivity Options: Auxiliary power outlet, cigarette lighter 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles (12,000 km) or 6 months, whichever comes first...