🏷️ Basic Information Identification Make: Cadillac Model: STS Year: 2006 Codes Platform: GM Sigma Platform Chassis Code: X273 👋 Introduction Market Position Positioning: Premium Luxury Sedan, Competes with BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS Competitive Analysis Manual Advantage: Officially Licensed OE Data, Digital Convenience, Comprehensive Coverage, Cost-Effective Alternative to Printed Manuals Key Features Digital Access: Instant Access, Multi-Device Compatibility, Constantly Updated Content (within subscription period) User Experience: Intuitive Interface, Easy Navigation, Bookmark Functionality 📋 Manual Details Coverage Areas Primary Coverage: 2006 Cadillac STS (North American Market) Manual Type Type: Service and Repair Manual Software Format Format: Online/Digital Software Language Language: English Access Duration Duration: 1 Year Subscription 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Engine Control System (ECM), Fuel System, Exhaust System, Transmission (Automatic), Drivetrain (Rear-Wheel Drive, All-Wheel Drive) Chassis: Suspension System (Front & Rear), Steering System, Brake System (Hydraulic, ABS, Traction Control), Wheel & Tire Assemblies Electrical: Body Control Module (BCM), Powertrain Control Module (PCM), Instrument Cluster, Lighting (Interior & Exterior), Audio System, Climate Control System, Power Accessories (Windows, Locks, Seats), Security System, Wiring Diagrams, Diagnostic Trouble Codes (DTCs) Procedures Included Maintenance: Routine Scheduled Maintenance, Fluid Checks and Replacements, Filter Replacements, Belt Inspections and Replacements, Spark Plug Replacement, Brake Pad and Rotor Replacement, Tire Rotation and Balancing Repair: Engine Component Overhaul, Transmission Overhaul, Suspension Component Replacement, Brake System Repairs, Steering Component Repairs, Electrical Component Diagnosis and Replacement, HVAC System Repairs, Body Panel Repair and Replacement Diagnostics: Troubleshooting Guides, Diagnostic Trouble Code (DTC) Interpretation, Component Testing Procedures, Electrical System Diagnosis, Symptom-Based Troubleshooting Technical Depth Depth: Comprehensive Factory-Derived Information, Detailed Step-by-Step Repair Procedures, Torque Specifications, Schematics, Component Locations, Diagnostic Flowcharts, Technical Service Bulletins (TSBs) Integration (where applicable) 📊 Manual Specifications File Format Format: Web-Based Software (Accessible via Browser) Print Quality Quality: High-Resolution Digital Images, Diagrams, and Text Binding Type Type: N/A (Digital) Paper Type Type: N/A (Digital) Searchability Feature: Full Text Search Functionality Compatibility Devices: PC, Laptop, Smartphone, Tablet (Requires Internet Connection and Web Browser) ⚙️ Engine Specifications Primary Engine Engine Code: LH2 Engine Type: 3.6L V6 DI (Direct Injection) Displacement: 3564 cc (217 cubic inches) Bore X Stroke: 94.0 mm x 85.6 mm (3.70 in x 3.37 in) Compression Ratio: 10.5:1 Horsepower: 255 hp @ 6200 rpm Torque: 250 lb-ft @ 3200 rpm Fuel System Fuel Delivery: Sequential Port Fuel Injection (SFI) with Direct Injection (DI) Fuel Type: Premium Unleaded Gasoline (91 Octane or Higher Recommended) Engine Control ECU Type: Bosch Motronic ME9.0 Engine Variants Optional Engine: 4.6L Northstar V8 VVT (VIN Y) Optional Engine Specs Engine Code: L37 Engine Type: 4.6L V8 VVT Horsepower: 320 hp @ 6400 rpm Torque: 310 lb-ft @ 4400 rpm 🔧 Transmission Standard Type: 6-Speed Automatic Hydra-Matic 6L80 Drive Configuration: Rear-Wheel Drive (RWD) Optional Type: 6-Speed Automatic Hydra-Matic 6L80 Drive Configuration: All-Wheel Drive (AWD) - Active on Demand Features Features: Driver Shift Control (Manual Mode), Performance Algorithm Shifting (PAS), Tow/Haul Mode Fluid Specifications Fluid Type: Dexron VI Automatic Transmission Fluid (ATF) Fluid Capacity Capacity: Approx. 10.5 quarts (9.9 liters) for 6L80 📐 Dimensions Exterior Length: 195.8 in (4973 mm) Width: 72.7 in (1847 mm) Height: 57.1 in (1450 mm) Wheelbase: 113.4 in (2880 mm) Weights Curb Weight Rwd: Approx. 3920 lbs (1778 kg) Curb Weight AWD: Approx. 4070 lbs (1846 kg) Gross Vehicle Weight Rating: Approx. 5000 lbs (2268 kg) Cargo Trunk Volume: 15.3 cu ft (433 liters) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star Driver, 5-Star Passenger (2006 Model) IIHS Side Impact: Good (2006 Model) IIHS Rear Impact: Acceptable (2006 Model) Active Features Traction Control: Standard StabiliTrak Stability Control System with Traction Control ABS: Standard 4-Wheel Anti-lock Braking System (ABS) with Electronic Brake Force Distribution (EBD) Brakes: Front Ventilated Discs, Rear Solid Discs (Size varies by engine) Passive Features Airbags: Driver and Front Passenger Frontal Airbags, Front Seat-Mounted Side-Impact Airbags, Roof-Mounted Side-Curtain Airbags (Front and Rear) Seatbelts: 3-Point Seat Belts with Pretensioners and Load Limiters 💡 Technology Features Infotainment Infotainment System: Optional Bose Premium Audio System, Touchscreen Navigation System, Voice Recognition (OnStar integration) Driver Assistance Driver Assistance Features: StabiliTrak Stability Control, Traction Control, Available Adaptive Cruise Control, Available Head-Up Display (HUD) Connectivity Connectivity Features: OnStar System with Turn-by-Turn Navigation and Emergency Services (Subscription required) Comfort Features Comfort Features: Heated and Ventilated Front Seats, Heated Rear Seats, Dual-Zone Automatic Climate Control, Keyless Ignition 🔧 Maintenance Service Intervals Oil Change: Every 7,500 miles or 12 months, whichever comes first (synthetic oil recommended) Tire Rotation: Every 7,500 miles Cabin Air Filter: Every 15,000 miles or 12 months Spark Plugs: See manual for specific intervals based on engine type (e.g., 100,000 miles for certain iridium plugs) Fluid Specifications Engine Oil: SAE 5W-30 Synthetic (API SN or higher, GM dexos1 Gen 2 compliant for later models, consult manual for precise 2006 spec) Coolant: GM-specific Orange Long-Life Coolant (50/50 mix with distilled water) Brake...