🏷️ Basic Information Identification Make: Cadillac Model: Seville STS Year: 2003 Generation Generation: Ninth Generation (1998-2004) Codes Chassis Code: GMX201 👋 Introduction Market Position Positioning: Premium luxury sedan for the 2003 model year, competing with brands like Mercedes-Benz, BMW, and Lexus. The STS (Seville Touring Sedan) was the performance-oriented variant. Competitive Analysis Competitors: The 2003 Seville STS competed against models such as the Mercedes-Benz E-Class, BMW 5 Series, Lexus GS, and Audi A6. Key Features Selling Points: Powerful Northstar V8 engine, Magnetic Ride Control suspension, luxurious interior, advanced technology features for its era, comfortable and quiet ride, performance-oriented handling. 📋 Manual Details Coverage Areas Scope: All models and all repairs A-Z Page Count Estimated Pages: Extensive (exact count not provided, but described as comprehensive) Manual Type Type: Factory Service and Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine (Northstar V8, L37), Control System, Mechanical, Fuel Service, Emission Control, Intake, Exhaust, Cooling, Lube, Ignition, Starting, Charging, Automatic Transmission (4T80-E) Drivetrain: Transfer Propeller Shaft, Drive Shaft, Differential, Axle Chassis: Suspension, Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering Electrical & Electronics: Air Conditioning, Supplemental Restraint System (SRS), Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter/Audio/Visual, Horn, Windshield/Glass/Mirror, Instrument Panel, Multiplex/CAN Communication, Electrical Systems Body & Interior: Exterior & Interior, Seat, Engine Hood/Door Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections Diagnostics: Troubleshooting procedures, diagnostic trouble codes (DTCs), electrical diagnostics Repair: Component removal and installation, system overhauls, component rebuilding Technical Information: Step-by-step instructions, diagrams, illustrations, wiring schematics, specifications Technical Depth Depth: Factory-level detail, comprehensive coverage for technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format Compatibility: Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac Print Quality Printable: Yes, all pages are printable Binding Type Binding: Digital (PDF), allowing selective printing Paper Type Paper Description: N/A (Digital format, user prints on desired paper type) ⚙️ Engine Specifications Primary Engine Engine Type: 4.6L V8 Northstar (L37) Performance Horsepower: Approx. 300 hp @ 6000 rpm (specific to STS trim) Torque: Approx. 295 lb-ft @ 4400 rpm (specific to STS trim) Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (SFI) Engine Design Configuration: V8, 32-valve, DOHC Block Material: Aluminum Bore X Stroke: 93.0 mm x 84.0 mm (3.66 in x 3.31 in) Compression Ratio: 10.0:1 🔧 Transmission Standard Transmission Type: 4-speed automatic transaxle Optional Optional Transmission: N/A for 2003 STS Features Transaxle Code: 4T80-E Drive Type: Front-Wheel Drive (FWD) 📐 Dimensions Exterior Length: Approx. 199.8 inches (5075 mm) Width: Approx. 71.4 inches (1813 mm) Height: Approx. 56.0 inches (1422 mm) Wheelbase: Approx. 109.9 inches (2791 mm) Weights Curb Weight: Approx. 3,850 - 3,950 lbs (1746 - 1792 kg) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 5-Star (for 2003 model year) NHTSA Front Impact Passenger: 5-Star (for 2003 model year) IIHS Front Offset Crash: Good (for 2003 model year) Active Features Traction Control: Standard Stability Control: StabiliTrak (standard on STS) ABS: Standard Passive Features Airbags Front: Dual front airbags Airbags Side: Front and rear side-impact airbags (optional/standard depending on sub-trim) Seatbelts: Front seatbelt pretensioners, rear seatbelt anchors 💡 Technology Features Infotainment Infotainment System: Delphi-based entertainment system with AM/FM stereo, CD player, optional Bose premium audio system, and available navigation system. Driver Assistance Adaptive Cruise Control: Available (optional feature) Parking Assist: Available rear park assist (Ultrasonic Rear Park Assist) Connectivity Onstar: Available, integrated into the infotainment system for emergency services, vehicle diagnostics, and remote access. Suspension Tech Magnetic Ride Control: Standard on STS. This advanced suspension system uses magneto-rheological fluid in the dampers, allowing for near-instantaneous changes in damping force based on road conditions and driving input, providing a superior blend of comfort and handling. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil type. Consult manual for specific recommendations. Tire Rotation: Every 5,000-7,500 miles Coolant Flush: Refer to manual, often around 100,000 miles initially, then at intervals thereafter. Fluid Specifications Engine Oil Type: SAE 4W-50 Synthetic (API Service SG, SH, SJ or higher, ILSAC GF-2 or higher) Engine Oil Capacity: Approx. 4.5 quarts (4.3 liters) with filter change Transmission Fluid Type: Dexron III H / Dexron VI Coolant Type: Dex-Cool Extended Life (Orange) Brake Fluid: DOT 3 Known Issues Common Problems: Water pump leaks (Northstar engine), intake manifold gaskets, electronic throttle control issues, starter motor failure (often integrated into engine), ABS/Traction control sensor failures, suspension component wear (especially bushings and struts due to Magnetic Ride Control). 📚 Vehicle History Brand Heritage Brand Description: Cadillac, a division of General Motors, is one of America's oldest automobile brands, known for luxury, prestige, and innovation since its founding in 1902. Model Evolution Seville Lineage: The Seville nameplate has been a staple in Cadillac's lineup, representing the brand's entry...