🏷️ Basic Information Identification Make: Cadillac Model: STS Year: 2006 Codes Chassis Code: GM Sigma (first generation) 👋 Introduction Market Position Segment: Luxury Sport Sedan Target Audience: Discerning luxury car buyers seeking performance, comfort, and advanced technology. Competitive Analysis Competitors: BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS, Infiniti M. Key Features Design Philosophy: American interpretation of luxury sport sedan, blending performance with Cadillac's distinct styling cues. Platform: GM Sigma platform, shared with the Cadillac CTS and SRX, known for its rear-wheel-drive bias and handling capabilities. 📋 Manual Details Coverage Areas Coverage Scope: All models, engines, trim levels, and transmission types for the 2006 Cadillac STS. Page Count Estimated Page Count: Extensive (typically over 2000 pages for a complete workshop manual). Manual Type Type: Complete Workshop Service Repair Manual Language Language: English Format Format: Downloadable (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, valve train, crankshaft, pistons, connecting rods, lubrication system, cooling system, intake and exhaust manifolds. Engine Performance: Fuel system (injection, pumps, injectors), ignition system (coils, plugs), emissions control, engine control module (ECM) diagnostics. Transmission: Automatic transmission service (disassembly, assembly, fluid changes, torque converter), transmission control module (TCM) diagnostics. Drivetrain: Driveshaft, CV joints, differential, all-wheel-drive (AWD) system components. Suspension: Front and rear suspension systems, shock absorbers, struts, control arms, sway bars, bushings, alignment procedures. Steering: Power steering system, steering rack, steering column, wheel alignment. Brakes: Brake system components (discs, pads, calipers, lines), ABS, traction control, parking brake, brake bleeding procedures. Electrical System: Battery, charging system (alternator), starting system (starter), lighting system, wiring diagrams, fuses, relays. Body And Frame: Body panels, doors, hood, trunk, bumpers, chassis structure, corrosion protection. HVAC: Heating, ventilation, and air conditioning system components, refrigerant handling, diagnostics. Interior: Seats, dashboard, trim panels, airbags, seat belts, interior lighting. Diagnostics: On-Board Diagnostics (OBD-II) procedures, diagnostic trouble codes (DTCs), scan tool usage, component testing. Procedures Included Routine Maintenance: Oil and filter changes, fluid level checks and top-offs, tire rotation and pressure checks, spark plug replacement, air filter replacement. Troubleshooting: Step-by-step diagnostic procedures for common and uncommon faults across all vehicle systems. Repair And Replacement: Detailed instructions for removing, repairing, and reinstalling all major and minor components. Wiring And Schematics: Comprehensive electrical wiring diagrams for all vehicle systems, including power distribution, grounds, and signal paths. Specifications And Tolerances: Torque specifications for fasteners, diagnostic data, component clearances, and operating parameters. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complex diagnostics and complete overhauls. Includes detailed component diagrams and procedural steps. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Print Quality Quality: High quality, designed for clarity with detailed text and images. Printable page-by-page or in its entirety. Binding Type Binding: N/A (Downloadable digital format) Paper Type Paper: N/A (Digital format, printable on various paper types) Accessibility Device Compatibility: Compatible with all PC and Mac computers, tablets, and mobile phones. Requires Adobe Reader (free download). ⚙️ Engine Specifications Primary Engine Engine Code 1: L37 (Northstar V8) Displacement 1: 4.6L (281 cu in) Configuration 1: DOHC 32-valve V8 Horsepower 1: 320 hp @ 6400 rpm Torque 1: 315 lb-ft @ 4400 rpm Fuel System 1: Sequential Port Fuel Injection (SFI) Compression Ratio 1: 10.5:1 Optional Engine Engine Code 2: LY7 (3.6L V6) Displacement 2: 3.6L (220 cu in) Configuration 2: DOHC 24-valve V6 Horsepower 2: 255 hp @ 6200 rpm Torque 2: 252 lb-ft @ 4400 rpm Fuel System 2: Sequential Port Fuel Injection (SFI) Compression Ratio 2: 10.2:1 🔧 Transmission Standard Type: 6-speed automatic (6L80/6L70 for V8, 6L70 for V6) Gear Ratios: Refer to specific transmission section for detailed ratios (e.g., 4.06:1 first gear). Fluid Type: Dexron VI Automatic Transmission Fluid (ATF) Optional Drivetrain Options: Rear-wheel drive (RWD) or All-wheel drive (AWD) available for both engines. Features Shift Modes: Driver Shift Control (DSC) for manual gear selection. 📐 Dimensions Exterior Length: 192.3 in (4884 mm) Width: 72.5 in (1841 mm) Height: 57.6 in (1463 mm) Wheelbase: 113.5 in (2883 mm) Weights Curb Weight V6 Rwd: 3927 lbs (1781 kg) Curb Weight V8 AWD: 4210 lbs (1909 kg) 🛡️ Safety Features Ratings NHTSA Front Impact: 5 Stars (Driver & Passenger) NHTSA Side Impact: 5 Stars (Front & Rear Passengers) IIHS Front Offset: Good Active Features ABS: Standard 4-wheel antilock disc brakes Traction Control: Standard All-Speed Traction Control (TCS) Stability Control: Standard StabiliTrak Electronic Stability Control Passive Features Airbags: Dual-stage front airbags, front side-impact airbags, roof-mounted curtain airbags. Seat Belts: Front pretensioners with load limiters, rear LATCH system. 💡 Technology Features Infotainment Available System: Infiniti audio system with Bose speakers, CD player, MP3 capability, and optional navigation system. Connectivity: Optional Bluetooth hands-free calling, auxiliary audio input. Driver Assistance Adaptive Cruise Control: Optional; maintains set speed and distance to vehicle ahead. Parking Assist: Optional rear parking assist sensors. Lighting Headlights: Standard HID (High-Intensity Discharge) Xenon...