This manual covers the LaCrosse, a mid-size luxury sedan produced for the North American market during its second generation, specifically the 2009 model year. Built on the GM Epsilon platform, the LaCrosse is recognized for its comfort, quiet ride, and spacious interior, offering a premium experience often competitively priced against other brands. It was designed to replace the Buick Park Avenue and Century, embodying a more modern and globally influenced aesthetic for Buick. The vehicle was manufactured in Kansas City, Kansas, USA, and typically featured a 3.8L V6 or an optional 3.6L V6 engine paired with a 4-speed automatic transaxle or a 6-speed automatic transaxle, respectively, with front-wheel drive. This comprehensive Service and Repair Manual Software provides detailed information essential for the maintenance and repair of the 2009 LaCrosse. It covers all major vehicle systems, including powertrain (engine mechanical, fuel, ignition, exhaust, emissions, electrical), transmission, drivetrain, suspension, steering, brakes, electrical systems, HVAC, and body components. The manual includes routine maintenance procedures, diagnostic troubleshooting guides, detailed repair instructions, and electrical wiring diagrams, all presented with factory-level detail. Its purpose is to empower owners, mechanics, and technicians with the knowledge required to effectively maintain, diagnose, and repair the vehicle, ensuring its optimal performance and longevity. 🏷️ Basic Information Identification Make: Buick Model: LaCrosse Year: 2009 Generation Generation: Second Generation (2005-2009) Codes Platform: GM Epsilon 👋 Introduction Market Position Market Segment: Mid-size luxury sedan Competitive Analysis Key Competitors: Toyota Avalon, Nissan Maxima, Ford Taurus, Chrysler 300 Key Features Value Proposition: Comfort, quiet ride, spacious interior, premium features, and often competitive pricing relative to European luxury brands. Licensing Licensing: Officially licensed, derived from OE (Original Equipment) materials. Delivery Method Access Period: 1 Year access included, with discounts for extension. Compatibility Device Compatibility: PC, laptop, smartphone, tablet (requires internet connection and web browser). 📋 Manual Details Coverage Areas Covered Markets: North America Page Count Estimated Page Count: Thousands (typical for factory-derived software) Manual Type Manual Type: Service and Repair Manual Software Language Language: English Format Format: Digital Download (PDF or proprietary software) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, lubrication, cooling, fuel system, ignition, exhaust, emissions control, engine electrical, ECM/PCM diagnostics Transmission: Automatic transmission (e.g., 4T65-E), torque converter, shift controls, diagnostics, repair procedures Drivetrain: Front-wheel drive, half-shafts, CV joints, transaxle Suspension And Steering: Front suspension (MacPherson strut), rear suspension (multi-link), steering system (power assisted), wheel alignment, components Brakes: Front disc brakes, rear disc brakes, ABS (Anti-lock Braking System), EBD (Electronic Brakeforce Distribution), parking brake, hydraulic system, components Electrical System: Battery, charging system, starting system, lighting, instruments, gauges, power accessories, body control module (BCM), fuses, relays, wiring diagrams HVAC: Heating, Ventilation, and Air Conditioning system, refrigerant, controls, diagnostics, repair Body And Trim: Exterior panels, interior trim, doors, windows, glass, seats, roof system Procedures Included Maintenance: Oil change, filter replacement, fluid checks and changes, tire rotation, spark plug replacement, brake pad replacement, belt inspection/replacement Diagnostics: Troubleshooting guides, symptom-based diagnostics, OBD-II diagnostic trouble codes (DTCs), specific system diagnostics Repair: Component removal and installation, sub-assembly repair, major component overhaul (e.g., engine, transmission) Wiring Information: Detailed electrical schematics, component location, connector identification Technical Depth Depth: Comprehensive factory-level detail suitable for professional technicians and advanced DIYers. 📊 Manual Specifications File Format File Format: PDF or proprietary software interface. Print Quality Print Quality: High-resolution for clear viewing and printing of diagrams and text. Binding Type Binding Type: N/A (Digital format) Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: 3.8L V6 Engine Code: L36 (likely, check VIN for exact variant) Displacement: 3.8 Liters (230.5 cubic inches) Horsepower: 205 hp @ 5200 rpm (approximate) Torque: 230 lb-ft @ 4000 rpm (approximate) Performance Optional Engine: 3.6L V6 (Direct Injection) Optional Engine Optional Engine Code: LY7 (likely, check VIN for exact variant) Optional Displacement: 3.6 Liters (217 cubic inches) Optional Horsepower: 255 hp @ 6200 rpm (approximate) Optional Torque: 250 lb-ft @ 5200 rpm (approximate) Fuel System Fuel Delivery: Sequential Fuel Injection (SFI) Recommended Fuel: 87 Octane Regular Unleaded Gasoline (91 Octane recommended for 3.6L for optimal performance) 🔧 Transmission Standard Transmission Type: 4-Speed Automatic Transaxle Transmission Model: 4T65-E Optional Optional Transmission Type: 6-Speed Automatic Transaxle (with 3.6L engine) Optional Transmission Model: 6T70 Features Drive Type: Front-Wheel Drive (FWD) 📐 Dimensions Exterior Length: Approx. 196.9 inches Width: Approx. 72.4 inches Height: Approx. 57.7 inches Wheelbase: Approx. 110.7 inches Weights Curb Weight: Approx. 3,700 - 4,000 lbs (depending on engine and trim) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 5 Stars NHTSA Front Impact Passenger: 5 Stars IIHS Front Offset Crash Rating: Good IIHS Side Impact Crash Rating: Good Active Features Active Safety Systems: ABS, Traction Control, StabiliTrak (Electronic Stability Control) Passive Features Airbags: Frontal airbags, side-impact airbags, side-curtain airbags 💡 Technology Features Infotainment Available Features: Touchscreen navigation, Bose premium audio system, satellite radio, Bluetooth connectivity (often optional or...