🏷️ Basic Information Identification Make: Cadillac Model: Seville STS Year: 1998 Codes Platform: K-body Chassis Code: K-217 👋 Introduction Market Position Positioning: Premium luxury sedan, targeting discerning buyers seeking comfort, performance, and advanced technology. Competitive Analysis Key Competitors: BMW 7 Series, Mercedes-Benz S-Class, Lexus LS, Lincoln Continental Key Features Unique Selling Points Vehicle: Northstar V8 engine, Magnetic Ride Control (on some models), advanced infotainment and comfort features for its era. Manual Value Proposition: Provides factory-level expertise, enabling owners to perform maintenance, diagnostics, and repairs with accuracy and confidence, saving time and money. Manual Utility Convenience: Single PDF format eliminates the need to search through multiple physical books, offering easy navigation and targeted printing of specific sections. 📋 Manual Details Coverage Areas Covered Trims: STS (Sport Touring Sedan) Engine Variants: Northstar 4.6L V8 Page Count Estimated Page Count: Extensive (specific number not provided, typical for factory service manuals of this era is 1500-2500 pages) Manual Type Type: Factory Service Manual / Repair Manual Content Source: Vehicle-specific factory service manual, identical to what dealership technicians use. Language Language: English Format Format: PDF (digital download) 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Cooling System, Lubrication System, Ignition System, Starting & Charging System, Engine Control System, Automatic Transmission Chassis: Suspension (Front & Rear), Steering System, Brake System (Front & Rear, ABS), Wheel & Tire Assembly, Drive Shaft, Differential, Axles Body And Interior: Body & Frame, Exterior & Interior Trim, Doors, Hood, Seats, Instrument Panel, Glass, Mirrors, HVAC (Heating, Ventilation, Air Conditioning), Restraint Systems (Airbags, Seatbelts) Electrical: All Electrical Systems, Wiring Schematics, Lighting, Power Accessories, Audio/Visual Systems, Cruise Control, Engine Immobilizer, Wiper/Washer System, Horn, Multiplex/CAN Communication Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes (Oil, Coolant, Brake Fluid, Transmission Fluid), Filter Replacements, Inspections Diagnostics: Diagnostic Trouble Codes (DTCs), Troubleshooting Guides, Symptom-Based Diagnostics, Electrical System Diagnosis Repair: Component Removal & Installation, Overhaul Procedures, Adjustment Procedures, Reassembly Specifications: Torque Specifications, Clearances, Fluid Capacities, Electrical Specifications, Performance Data Body Repair: Panel removal/installation, dent repair, rust prevention, paint codes, alignment specifications. Interior Repair: Dashboard removal, seat upholstery, trim panel replacement, carpeting. Emission Control: Emission control systems, catalytic converter information, oxygen sensors, EVAP system diagnostics. Wiring Schematics: Detailed, comprehensive wiring diagrams for all vehicle systems, crucial for electrical troubleshooting. Technical Depth Depth: Comprehensive: Covers everything from routine maintenance to complex diagnostics and major component overhauls. Detailed step-by-step instructions, diagrams, illustrations, and wiring schematics. 📊 Manual Specifications File Format Format: PDF Compatibility: Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac Searchability: Searchable text within the PDF for quick information retrieval. Print Quality Printability: Yes, all pages are printable. Ability to blow up images and print enlarged copies. Binding Type Binding: N/A (Digital PDF - no physical binding) Paper Type Paper Type: N/A (Digital PDF - no physical paper type) Software Requirements Reader Software: Adobe PDF Reader (free) Compression Software: Winzip or equivalent (free) ⚙️ Engine Specifications Primary Engine Engine Type: 4.6L DOHC V8 (Northstar L37/L47 variants likely for STS) Performance Horsepower: Approximately 275-300 hp (depending on specific L37/L47 tuning for 1998 STS) Torque: Approximately 300-310 lb-ft (depending on specific L37/L47 tuning for 1998 STS) Fuel System Fuel Delivery: Sequential Port Fuel Injection (SFI) Engine Management ECU: PCM (Powertrain Control Module) with OBD-II diagnostics Cooling Coolant Type: Dex-Cool (Orange, 50/50 mix with distilled water) - Specific GM P/N 1052734 or equivalent Lubrication Oil Type: SAE 5W-30 Synthetic - Specific GM P/N 1052735 or equivalent Oil Capacity: Approximately 4.5 quarts (4.3 liters) with filter change 🔧 Transmission Standard Type: 4-speed automatic overdrive Model: 4T80-E Features Shift Modes: Standard, Sport (may vary by trim/option) Fluid Type Fluid Specification: Dexron III (or Dexron VI as a compatible replacement) - Specific GM P/N 88904753 or equivalent Fluid Capacity Capacity: Approximately 8.5 quarts (8.0 liters) for a dry fill, 4-5 quarts for a fluid change 📐 Dimensions Exterior Wheelbase: 110.5 inches (2807 mm) Length: 201.4 inches (5116 mm) Width: 72.4 inches (1839 mm) Height: 55.9 inches (1420 mm) Weights Curb Weight: Approximately 3,700-3,800 lbs (1678-1724 kg) Gross Vehicle Weight Rating: Approximately 4,800 lbs (2177 kg) 🛡️ Safety Features Ratings NHTSA Frontal Impact Driver: Not directly applicable for this specific year and testing standards, but generally considered a safe vehicle for its era. NHTSA Frontal Impact Passenger: Not directly applicable for this specific year and testing standards. Active Features ABS: Standard Anti-lock Braking System Traction Control: Standard Traction Control System (TCS) Stability Control: Not generally available on this model year. Passive Features Airbags: Driver and front passenger airbags. Side airbags were optional or standard on STS. Seatbelts: Three-point seatbelts with pretensioners for front occupants, standard three-point belts for rear. 💡 Technology Features Infotainment Audio System: Bose premium audio system with CD player and/or cassette tape. Touchscreen interface may be present on some models. Navigation: Optional factory navigation system (often CD-ROM based). Driver Assistance Parking Assist:...