🏷️ Basic Information Identification Make: Cadillac Model: Deville Year: 2004 👋 Introduction Market Position Positioning: Premium American Luxury Sedan. Positioned as Cadillac's flagship sedan, offering comfort, technology, and a smooth ride for discerning luxury buyers. Competitive Analysis Competitors: Ford Crown Victoria/Grand Marquis, Lincoln Town Car, Buick Park Avenue, Chrysler 300M, Lexus LS series, Mercedes-Benz S-Class (entry-level trims), BMW 7 Series (entry-level trims). Key Features Features: Northstar V8 engine, Magnetic Ride Control suspension, spacious interior, advanced safety features, available StabiliTrak, Bose premium audio. 📋 Manual Details Coverage Areas Primary Coverage: Full Service and Repair Page Count Estimated Page Count: Extensive (Typical Factory Manual Length) Manual Type Type: Software Service & Repair Manual Language Language: English Format Format: Online Software Access (Yearly Subscription) 📖 Manual Coverage Systems Covered Powertrain: Engine (4.6L Northstar V8), Transmission (4-Speed Automatic 4T80-E/4T85-E), Drivetrain (Front-Wheel Drive) Chassis: Suspension (Magnetic Ride Control, Adaptive Dampers, Struts, Shocks, Bushings), Steering (Power Rack and Pinion, Tilt/Telescopic Column), Brakes (Front/Rear Disc, ABS, Traction Control) Electrical: Full Electrical Schematics, Lighting, Instrumentation, Body Control Modules, Powertrain Control Modules, Infotainment, HVAC Controls Body: Exterior Body Panels, Interior Trim, Doors, Windows, Seats, HVAC System (Heater, Air Conditioning), Body Hardware Procedures Included Maintenance: Oil Changes, Filter Replacements, Fluid Checks and Changes, Belt Inspections, Spark Plug Replacement, Tire Rotation Diagnostics: Troubleshooting Guides, Diagnostic Trouble Codes (DTCs) Interpretation, Component Testing, Electrical System Diagnostics Repair: Engine Component Replacement (e.g., alternators, starters, fuel injectors), Transmission Service, Brake Pad/Rotor Replacement, Suspension Component Repair/Replacement, HVAC System Repair, Body Panel Repair Technical Depth Depth: Comprehensive: From basic maintenance to detailed component removal, installation, and calibration. 📊 Manual Specifications File Format File Format: Proprietary Web-Based Software Print Quality Print Quality: N/A (Digital Format) Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: L37 (for higher output models) / LD8 (for standard output models) Engine Type: 4.6L DOHC 32-Valve V8 (Northstar) Performance Horsepower: Approximately 275-290 hp (depending on specific engine tune/trim) Torque: Approximately 295-305 lb-ft (depending on specific engine tune/trim) Fuel System Fuel Delivery: Sequential Fuel Injection (SFI), Multi-Port Fuel Injection (MPFI) Fuel Type Fuel Type: Premium Unleaded Gasoline (91 Octane Recommended) Cooling System Coolant Type: Dex-Cool (Orange) Extended Life Antifreeze/Coolant (GM P/N 12346290 or equivalent) 🔧 Transmission Standard Transmission Type: 4-Speed Automatic Transaxle Transmission Codes: 4T80-E / 4T85-E Features Transmission Features: Driver Shift Control (DSC) with Manual Mode, electronically controlled. Fluid Specification Fluid Type: Dexron III-H or Dexron VI Automatic Transmission Fluid 📐 Dimensions Exterior Length: 207.7 inches Width: 74.4 inches Height: 57.3 inches Weights Curb Weight: Approximately 3,900 - 4,100 lbs Gross Vehicle Weight Rating: Approximately 5,000 lbs 🛡️ Safety Features Ratings NHTSA Frontal Driver: 5-Star NHTSA Frontal Passenger: 5-Star NHTSA Side Driver: 4-Star NHTSA Side Rear Passenger: 4-Star IIHS Frontal Offset: Good Active Features Active Safety: StabiliTrak (Traction Control and Stability Enhancement), Anti-lock Braking System (ABS), Brake Assist Passive Features Airbags: Frontal Airbags (Driver & Passenger), Side-Impact Airbags (Front & Rear), Optional Overhead Curtain Airbags 💡 Technology Features Infotainment Infotainment System: Integrated AM/FM/CD audio system, optional Bose premium sound, OnStar communication system. Driver Assistance Driver Assistance: StabiliTrak (Traction Control and Stability Enhancement), parking assist sensors (rear), optional navigation system. Connectivity Connectivity Features: OnStar system for emergency assistance, vehicle diagnostics, and turn-by-turn navigation. Standard analog/digital cellular integration. Comfort Features Comfort Tech: Dual-zone automatic climate control, heated and ventilated front seats, memory seat functions, steering wheel mounted audio and climate controls. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles or 6 months (using synthetic oil, with oil life monitoring system). Air Filter Replacement: Inspect every 15,000 miles, replace as needed (or per oil life monitor). Spark Plug Replacement: 100,000 miles (Long-life Iridium spark plugs) Coolant Flush: Initial flush at 5 years/100,000 miles, then every 5 years/100,000 miles thereafter (using Dex-Cool). Fluid Specifications Engine Oil Capacity: Approximately 4.5 U.S. Quarts (with filter) Engine Oil Viscosity: SAE 5W-30 (Synthetic Recommended) Brake Fluid: DOT 3 Known Issues Engine Oil Leaks: Common rear main seal and valve cover gasket leaks on Northstar engines. Cooling System: Potential for intake manifold gasket leaks (earlier Northstar versions) and coolant crossover pipe failures. Suspension: Wear on front control arm bushings and possible issues with Magnetic Ride Control sensors/shocks. Interior Electronics: Issues with dashboard illumination, climate control modules, and power seat motors are occasionally reported. 📚 Vehicle History Brand Heritage Brand Philosophy: Cadillac, a historic American luxury marque, has consistently focused on comfort, prestige, and technological innovation since its inception. Model Evolution Devile Lineage: The Deville nameplate has a long history within Cadillac, evolving from a trim level to a distinct model. The 2000-2005 generation represented a significant styling and technological update from its predecessors, sharing a platform with the Cadillac Seville. Production Manufacturing Location: Hamtramck, Michigan, USA (General Motors Detroit/Hamtramck Assembly) 🏆 Awards & Recognition Recognitions Ward Auto Ten Best...