🏷️ Basic Information Identification Make: Cadillac Model: DTS Year: 2009 Codes Platform: GMT900 (shared with Chevrolet Impala, Buick Lucerne) 👋 Introduction Market Position Vehicle Segment: Full-size Luxury Sedan Brand Positioning: Flagship sedan offering comfort, luxury, and American-style cruising Competitive Analysis Key Competitors: Lincoln Town Car, Chrysler 300, Mercedes-Benz S-Class, BMW 7 Series Key Features Manual Advantage: Licensed OE information, convenient online access, comprehensive coverage, cost-effective alternative to printed manuals Vehicle Selling Points: Spacious interior, comfortable ride, powerful V8 engine, sophisticated styling, extensive feature set 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Software Language: English Format: Online Software (Web-based Access) Access Duration: 1 Year (with renewal options) 📖 Manual Coverage Systems Covered Engine: 4.6L Northstar V8 (L37 & LD8 variants) Transmission: 4-Speed Automatic (4T80-E) Drivetrain: Front-Wheel Drive (FWD) Suspension: Front Strut, Rear Multi-link Independent Brakes: Front Ventilated Discs, Rear Solid Discs with ABS Steering: Hydraulic Power Rack and Pinion Electrical: Complete wiring diagrams, diagnostic procedures for all electrical systems HVAC: Heating, Ventilation, and Air Conditioning system diagnosis and repair Body: Body panels, interior trim, glass, doors, locks, exterior lighting Chassis: Frame, subframes, mounts Safety Systems: Airbags, seat belts, anti-lock braking system (ABS), traction control (TCS), stability control (StabiliTrak) Procedures Included Maintenance: Scheduled maintenance (oil changes, fluid flushes, filter replacements), component checks Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based diagnostics, pinpoint tests Repair: Component removal and installation, adjustments, calibrations Diagnostics: Engine performance diagnostics, transmission diagnostics, ABS/TCS/StabiliTrak diagnostics, HVAC system diagnostics Wiring Diagrams: Comprehensive and detailed electrical wiring schematics for all systems Technical Depth Depth: Comprehensive OE-level service and repair information, suitable for DIY enthusiasts and professional technicians 📊 Manual Specifications File Format Digital Format: Web-based access, compatible with PC, laptop, smartphone, tablet browsers Print Quality Digital Quality: High-resolution, searchable text and diagrams Binding Type Binding: N/A (Online Software) Paper Type Paper Type: N/A (Online Software) ⚙️ Engine Specifications Primary Engine Engine Code L37: 4.6L 32-Valve DOHC V8 Northstar Engine Code Ld8: 4.6L 32-Valve DOHC V8 Northstar (Slightly detuned version) Performance L37 Horsepower: 292 hp @ 6300 rpm Torque: 284 lb-ft @ 4700 rpm Performance Ld8 Horsepower: 275 hp @ 6000 rpm Torque: 275 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Sequential Port Fuel Injection (SFI) Recommended Fuel: Premium Unleaded (91 octane or higher recommended for optimal performance) Engine Management ECU: PCM (Powertrain Control Module) with integrated TCM (Transmission Control Module) functions Emissions Controls: Catalytic Converters, Oxygen Sensors, EGR (Exhaust Gas Recirculation) 🔧 Transmission Standard Type: 4-Speed Automatic with Overdrive (4T80-E) Optional Optional Transmission: N/A (Standard on all 2009 DTS models) Features Transmission Control: Driver Shift Control (manual shifting capability) Fluid Specifications Fluid Type: Dexron VI Automatic Transmission Fluid Fluid Capacity: Approximately 10.0 - 12.0 quarts (9.5 - 11.4 liters) for complete refill (check dipstick) 📐 Dimensions Exterior Length: 207.0 inches (5258 mm) Width: 74.4 inches (1890 mm) Height: 58.1 inches (1476 mm) Wheelbase: 115.3 inches (2929 mm) Weights Curb Weight: Approximately 4,100 - 4,250 lbs (1860 - 1928 kg), depending on trim and options Gross Vehicle Weight Rating Gvwr: Approximately 5,350 lbs (2427 kg) Cargo Trunk Volume: 18.0 cubic feet (510 liters) 🛡️ Safety Features Ratings NHTSA Frontal Driver: 5-Star NHTSA Frontal Passenger: 5-Star NHTSA Side Driver: 5-Star NHTSA Side Passenger: 5-Star NHTSA Side Rear Passenger: 5-Star IIHS Frontal Offset: Good IIHS Side Impact: Good Active Features Stability Control: Standard StabiliTrak (Electronic Stability Control) Traction Control: Standard Traction Control System (TCS) Brakes: Anti-lock Braking System (ABS) Passive Features Airbags: Dual front, front side-impact, side curtain airbags Seatbelts: 3-point height-adjustable front, 3-point rear 💡 Technology Features Infotainment Infotainment System: Cadillac User Experience (CUE) was not standard on this model year. Likely equipped with a multi-function display with CD player, AM/FM radio, and optional navigation. Audio System: Bose premium audio system available on higher trims Driver Assistance Parking Assist: Rear parking assist sensors (optional/standard depending on trim) Cruise Control: Adaptive Cruise Control (optional on some trims) Connectivity Bluetooth: Available Bluetooth connectivity for hands-free calling Remote Start: Standard or optional remote start system 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles or 12 months, whichever comes first (using synthetic oil) Tire Rotation: Every 7,500 miles Coolant Flush: Every 5 years or 100,000 miles (with initial fill) Fluid Specifications Engine Oil: SAE 5W-30, Synthetic (API SN or dexos1™) Engine Oil Capacity: 5.5 US quarts (5.2 liters) with filter change Brake Fluid: DOT 3 Power Steering Fluid: Dexron III-H or equivalent Known Issues Common Problems: StabiliTrak sensor issues, occasional coolant leaks (especially near front cover/water pump), transmission solenoid issues, minor electrical gremlins, front suspension component wear (ball joints, bushings) Filter Part Numbers Oil Filter: ACDelco PF48, Wix 57060, Fram PH10575 (verify with VIN) Engine Air Filter: ACDelco A3147C, Wix 49163 (verify with VIN) 📚 Vehicle History Brand Heritage Cadillac Legacy: Long-standing reputation for luxury, comfort, and technological innovation in American automotive...