🏷️ Basic Information Identification Make: Cadillac Model: STS Year: 2006 Generation Generation: Second Generation (2005-2011) Codes Platform: GM Sigma 👋 Introduction Market Position Positioning: The 2006 Cadillac STS was positioned as a luxury performance sedan, competing in a segment dominated by European and Japanese rivals. It aimed to blend American luxury with sporty driving dynamics, a departure from some of Cadillac's earlier models. Competitive Analysis Competitors: Key competitors for the 2006 Cadillac STS included the BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS, and Infiniti M35/M45. Key Features Distinctive Features: The 2006 STS was noted for its available all-wheel-drive, Magnetic Ride Control suspension, and powerful Northstar V8 engine options, aiming to deliver a refined yet engaging driving experience. Manual Utility Value Proposition: This service and repair manual is an invaluable resource for STS owners and independent mechanics, providing direct access to the same factory-specific, step-by-step instructions, diagrams, and wiring schematics used by dealership technicians. It empowers users to perform maintenance, diagnostics, and repairs with accuracy and confidence, reducing reliance on expensive dealership labor and generic online information. 📋 Manual Details Coverage Areas Coverage: All models and all repairs A-Z Page Count Page Count Estimate: Extensive (typical factory service manuals for this era can range from 2,000 to 4,000+ pages depending on engine/drivetrain variants) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed coverage including: Engine mechanical, control systems, fuel service, emission control, intake/exhaust, cooling, lubrication, ignition, starting, and charging systems. Powertrain: Comprehensive coverage of automatic transmissions, manual transmissions (if applicable to specific trims), transfer cases, propeller shafts, drive shafts, differentials, and axles. Chassis: Includes: Suspension, steering column, power steering, brakes (control, hydraulic, parking), tires, and wheels. Body And Interior: Covers: Air conditioning, supplemental restraint system (SRS), seat belts, engine immobilizer, cruise control, wipers and washers, door locks, meters, audio/visual systems, horns, windshield/glass/mirrors, instrument panel, seats, engine hood/doors, exterior and interior trim, and glass. Electrical And Electronics: Extensive coverage of electrical system diagnostics, wiring schematics, multiplex/CAN communication systems, and various electronic modules. Climate Control: Detailed coverage of the automatic climate control system, including AC system diagnosis, refrigerant handling, component testing, and HVAC blower motor and control module information. Procedures Included Maintenance: Complete step-by-step instructions for scheduled maintenance, fluid checks and changes, filter replacements, and general upkeep. Diagnostics And Troubleshooting: Detailed diagnostic procedures, symptom-based troubleshooting guides, fault code identification, and electrical system diagnostics. Repair And Rebuild: Comprehensive repair procedures for all major components and systems, including engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement, and bodywork. Installation And Adjustment: Instructions for component installation, calibration, and adjustment of various systems. Body And Frame: Covers body panel alignment, door repairs, glass replacement, bumper repairs, and basic structural information. Technical Depth Depth: Factory-level technical depth, suitable for professional technicians and advanced DIY enthusiasts. Includes detailed schematics, torque specifications, diagnostic flowcharts, and specialized tool requirements. Wiring Schematics: Includes complete and detailed wiring schematics for all electrical systems, crucial for diagnosing electrical faults and understanding component interconnections. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High quality, printable pages with clear illustrations and diagrams. Ability to zoom and enlarge images for detailed viewing. Binding Type Binding Type: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format - printable on any paper type) Compatibility Operating Systems: Compatible with Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac operating systems. Requirements Software Requirements: Adobe PDF Reader and WinZip (or equivalent unzipping software) are required, both of which are free to download online. ⚙️ Engine Specifications Primary Engine Engine Options: The 2006 Cadillac STS was offered with two primary engine options: a 3.6L V6 and a 4.6L Northstar V8. This manual will cover both. Performance 3.6L V6 Specs: 3.6L DOHC V6 (LLT or LY7 depending on market/specifics), producing approximately 255-275 horsepower and 250-260 lb-ft of torque. 4.6L V8 Specs: 4.6L DOHC Northstar V8 (LD8 or LH2), producing approximately 320-325 horsepower and 295-300 lb-ft of torque. Fuel System Fuel Delivery: Multi-port fuel injection (MPI) for both V6 and V8 engines, with detailed specifications for fuel pressure, injector flow rates, and fuel pump diagnostics. Cooling System Coolant Type: Specific coolant type (likely Dex-Cool or equivalent orange silicate-free coolant) and capacity will be detailed in the manual, along with testing and bleeding procedures. Lubrication Oil Type Capacity: Manual will specify SAE viscosity grade (e.g., 5W-30) and API service classification (e.g., API SM or SN) for engine oil, along with correct oil capacity for each engine variant. 🔧 Transmission Standard Transmission Type: The 2006 STS primarily featured a Hydra-Matic 5L50-E 5-speed automatic transmission. Manual transmissions were not offered on this model in most markets. Optional Drivetrain: Available in Rear-Wheel Drive (RWD) and All-Wheel Drive (AWD) configurations. Features Transmission Features: The...