🏷️ Basic Information Identification Make: Kia Model: Optima Year: 2003 Codes Chassis Code: GD Vin Code: K 👋 Introduction Market Position Segment: Mid-size sedan Target Audience: Value-conscious buyers seeking reliable transportation with a good feature set Competitive Analysis Key Competitors: Toyota Camry, Honda Accord, Nissan Altima, Ford Fusion, Chevrolet Malibu Key Features Value Proposition: Affordable pricing, comfortable ride, practical interior, and good warranty coverage Design Philosophy: European-influenced styling (from its sister model, the Hyundai Sonata) emphasizing clean lines and a functional interior. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: Downloadable PDF Completeness: Complete Factory Official Documentation Page Count Estimated Pages: Hundreds of Pages (Actual count may vary based on specific print/digital version) 📖 Manual Coverage Systems Covered Engine: Comprehensive engine mechanical, electrical, lubrication, cooling, fuel, and exhaust systems Transmission: Manual and automatic transmission service, troubleshooting, and repair Drivetrain: Front-wheel drive system, axles, CV joints, and differential Suspension: Front and rear suspension components, alignment, and wheel bearing service Brakes: Hydraulic brake system, ABS, disc and drum brake service, and parking brake Steering: Power steering system, steering gear, and tie rod ends Electrical: Battery, charging system, starter, ignition system, lighting, and all accessory electrical circuits Body: Body panel repair, doors, windows, interior trim, and weatherstripping HVAC: Heating, ventilation, and air conditioning system diagnosis and repair Safety: Airbag system, seat belts, and passive restraint systems Procedures Included Maintenance: Routine maintenance procedures, oil changes, filter replacements, and fluid checks Diagnostics: Troubleshooting guides, symptom-based diagnosis, and diagnostic trouble codes (DTCs) Repair: Step-by-step repair instructions for all major vehicle components and systems Rebuilds: Engine and transmission rebuild procedures Overhaul: Component overhaul procedures (e.g., cylinder head, alternator) Adjustments: Component adjustments (e.g., parking brake, clutch) Specifications: Detailed torque specifications, clearances, and measurements for all repairs Technical Depth Level Of Detail: Factory-level detail suitable for professional technicians and experienced DIY enthusiasts Diagnostic Tools: Information on using diagnostic tools and interpreting scan data Wiring Diagrams: Complete electrical wiring diagrams for all circuits Schematics: System schematics and functional descriptions 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content Print Quality Printable: Fully printable by section or in its entirety Binding Type Binding Recommendation: Ideal for printing and binding for workshop use Paper Type Paper Recommendation: Print on durable, grease-resistant paper for workshop durability ⚙️ Engine Specifications Primary Engine Engine Code: G4JP (2.0L), G4JS (2.5L) Displacement: 1997 cc (2.0L) / 2493 cc (2.5L) Configuration: Inline-4 Cylinder Valvetrain: DOHC, 16 Valves (2.0L and 2.5L) Bore X Stroke: 82.0 mm x 93.5 mm (2.0L) / 87.0 mm x 103.0 mm (2.5L) Performance Horsepower 2.0L: 138 hp @ 6000 rpm Torque 2.0L: 136 lb-ft @ 4500 rpm Horsepower 2.5L: 168 hp @ 6000 rpm Torque 2.5L: 174 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline (87 Octane Recommended) Engine Management ECU Type: Electronic Control Unit (ECU) with OBD-II diagnostics 🔧 Transmission Standard Transmission Type: 5-Speed Manual (standard on some trims/engines) Optional Transmission Type: 4-Speed Automatic (optional on all trims) Features Automatic Features: Electronically controlled, adaptive shift logic Fluid Specifications Automatic Transmission Fluid: Dexron III (or equivalent) Fluid Capacity Automatic Transmission Capacity: Approximately 7.5 - 8.0 liters (refer to manual for exact capacity) 📐 Dimensions Exterior Length: 4800 mm (189.0 in) Width: 1795 mm (70.7 in) Height: 1450 mm (57.1 in) Wheelbase: 2700 mm (106.3 in) Front Track: 1550 mm (61.0 in) Rear Track: 1545 mm (60.8 in) Ground Clearance: 140 mm (5.5 in) (approximate) Interior Seating Capacity: 5 Cargo Trunk Volume: 440 liters (15.5 cu ft) (approximate) Weights Curb Weight: 1450-1550 kg (3197-3417 lbs) (depending on engine and options) Wheels Tires Wheel Size: 15-inch, 16-inch, or 17-inch alloy or steel wheels Tire Size Standard: P205/65R15 or P205/60R16 (depending on trim) Wheel Bolt Pattern: 5x114.3 mm (5x4.5 in) Lug Nut Torque: 110-130 Nm (81-96 lb-ft) 🛡️ Safety Features Ratings NHTSA Front Impact: 4 Stars (driver), 4 Stars (passenger) (for specific models/years, consult detailed reports) IIHS Side Impact: Good (for specific models/years, consult detailed reports) Active Features ABS: Standard on most trims (Anti-lock Braking System) Traction Control: Optional on some trims Passive Features Airbags: Front dual airbags, optional side-impact airbags Seat Belts: Three-point seat belts with pretensioners and load limiters 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, optional premium audio system (e.g., Infinity) Speaker Configuration: Typically 4 or 6 speaker system Driver Assistance Cruise Control: Standard on most trims Connectivity Auxiliary Input: Not typically available in factory systems; aftermarket solutions possible. Convenience Keyless Entry: Available on higher trims Power Features: Power windows, power door locks, power mirrors standard on most trims 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles (12,000 km) or 6 months, whichever comes first Air Filter Replacement: Every 30,000 miles (48,000 km) Spark Plug Replacement 2.0L: Every 60,000 miles (96,000 km) (Iridium...