🏷️ Basic Information Identification Make: Cadillac Model: Deville Year: 2005 Codes Chassis Code: GMT821 👋 Introduction Market Position Target Audience: Do-it-yourselfers, independent repair shops, Cadillac enthusiasts Competitive Analysis Advantages Over Print: More convenient, often less expensive, easily accessible, searchable, always up-to-date digital format Key Features Content Type: Factory-derived service and repair information User Interface: Easy access to information at the push of a button 📋 Manual Details Coverage Areas Manual Type: Service & Repair Manual Software Format: Online Software (Web Browser Access) Language: English Access Duration: 1 Year (with discount for extensions) Page Count Estimated Page Count: Thousands of pages (typical for OE service manuals) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, lubrication, cooling, fuel delivery, ignition, emissions control, engine management (ECM/PCM), starting and charging Drivetrain: Automatic transmission (4T80-E), transaxle, differential, drive axles, CV joints Brakes: Front and rear disc brakes, ABS (Anti-lock Braking System), Traction Control System (TCS), Electronic Stability Control (ESC) Steering: Power steering system, steering column, steering gear Suspension: Front and rear suspension (struts, control arms, bushings), shock absorbers, springs, leveling system (if equipped) Electrical: Battery, charging system, starting system, lighting (headlamps, taillamps, interior), instrument cluster, power windows, power locks, mirrors, wipers, horns, trailer wiring HVAC: Heating, ventilation, and air conditioning (HVAC) system, climate control, A/C compressor, condenser, evaporator, blower motor, refrigerant system Body: Body panels, doors, hood, trunk, bumpers, glass, interior trim, seats, convertible top (if applicable) Chassis: Frame, body structure, underbody components Diagnostic: Diagnostic trouble codes (DTCs), OBD-II procedures, diagnostic flowcharts, scan tool usage Procedures Included Maintenance: Routine maintenance (oil changes, filter replacements, fluid checks), scheduled maintenance intervals Repair: Component removal, installation, and repair procedures for all covered systems Troubleshooting: Diagnostic procedures, symptom-based troubleshooting guides, repair solutions Wiring Diagrams: Comprehensive electrical wiring diagrams for all circuits and components Specifications: Torque specifications, clearances, adjustments, fluid capacities, pressures Technical Depth Depth Of Coverage: Factory-level diagnostic and repair procedures, suitable for professional technicians and advanced DIYers 📊 Manual Specifications File Format Software Compatibility: Any PC, laptop, smartphone, or tablet with an internet connection and web browser Print Quality Data Source: Officially licensed OE (Original Equipment) materials Binding Type Digital Format: Searchable digital content Paper Type Licensing: Licensed by RepairSurge from OE sources ⚙️ Engine Specifications Primary Engine Engine Code: LH2 (Northstar V8) Engine Type: 4.6L V8 DOHC (Northstar) Performance Horsepower: Approximately 275-290 hp (depending on specific trim/tuning) Torque: Approximately 280-300 lb-ft (depending on specific trim/tuning) Fuel System Fuel Delivery: Sequential Port Fuel Injection (SFI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Other Engine Management System: GM Powertrain Control Module (PCM) 🔧 Transmission Standard Transmission Type: 4-speed automatic transaxle Transmission Model: 4T80-E Optional Optional Transmission: N/A (4T80-E was standard for this V8 engine) Features Transmission Features: Electronically controlled, adaptive shifting, manual mode (Driver Shift Control) 📐 Dimensions Exterior Length: Approximately 207.2 inches Width: Approximately 74.9 inches Height: Approximately 57.4 inches Wheelbase: Approximately 115.3 inches Weights Curb Weight: Approximately 3,800 - 4,000 lbs (depending on configuration) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (Driver and Passenger) NHTSA Side Impact: 4-Star (Front), 5-Star (Rear) Active Features Active Safety: ABS, Traction Control System (TCS), StabiliTrak (Electronic Stability Control - often standard or optional on higher trims) Passive Features Airbags: Front airbags (driver and passenger), front side-impact airbags, available rear side-impact airbags 💡 Technology Features Infotainment Infotainment System: Cadillac's premium audio system, often with CD player, cassette player (early models), and available navigation system. Voice recognition may be present. Driver Assistance Driver Assistance Features: StabiliTrak (ESC), Magnasteer (speed-sensitive power steering assist), often parking assist sensors (Ultrasonic Rear Park Assist). Connectivity Connectivity Options: Limited by modern standards, may include OnStar® system (subscription-based service for navigation, emergency calls, diagnostics). 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles or 12 months, whichever comes first (with synthetic oil, check manual for specific recommendations) Coolant Flush: Refer to manual; typically around 50,000-100,000 miles or 5 years Transmission Fluid Change: Refer to manual; often considered 'lifetime' by some manufacturers, but periodic checks and changes are recommended (e.g., 100,000 miles) Fluid Specifications Engine Oil Specification: SAE 4W-50 Synthetic (refer to manual for exact GM specification like P/N 12345774 or Dexos 1 Gen 2 equivalent for compatible synthetic) Coolant Specification: Dex-Cool® Extended Life Coolant (Orange) Transmission Fluid Specification: Dexron® VI Automatic Transmission Fluid (ATF) Known Issues Common Problems: Northstar engine coolant leaks (e.g., intake manifold gaskets, heater core), sagging headliner, power steering system issues, ABS/TCS sensor failures, ignition coil failures. 📚 Vehicle History Brand Heritage Cadillac Legacy: Cadillac, a division of General Motors, has a long history of producing luxury vehicles, known for comfort, style, and advanced technology. Model Evolution Devile Lineage: The Deville nameplate has a storied history in Cadillac's lineup, evolving from a trim level to a distinct model, often representing the pinnacle of Cadillac's comfort and luxury offerings. Production Generation:...