The 2012 Buick Lucerne is a full-size sedan renowned for its comfortable ride, spacious interior, and refined American luxury. Built on the GM Epsilon II platform, this model offers a choice between a 3.9L V6 engine producing 233 horsepower and a more potent 4.6L V8 Northstar engine delivering 292 horsepower, both paired with smooth automatic transmissions. Its design prioritizes a quiet cabin and a pleasant driving experience, making it a strong contender in its segment. The Lucerne's engineering emphasizes reliability and driver comfort, further enhanced by a suite of safety features including standard traction control, stability control, and comprehensive airbag systems, contributing to its excellent safety ratings. This comprehensive workshop service and repair manual provides in-depth coverage for all 2012 Buick Lucerne models, engines, trim levels, and transmission types. It details routine maintenance procedures, such as oil changes and filter replacements, alongside complex repair and overhaul instructions for all major vehicle systems, including the engine, transmission, drivetrain, suspension, steering, brakes, and electrical systems. Troubleshooting guides, diagnostic procedures, and technical specifications are included to assist owners and technicians in maintaining and repairing the vehicle effectively. The manual is designed to be a complete resource, enabling efficient upkeep and resolution of issues, ensuring the longevity and optimal performance of your Lucerne. 🏷️ Basic Information Identification Make: Buick Model: Lucerne Year: 2012 Body Style: Full-size Sedan Platform: GM Epsilon II 👋 Introduction Market Position Segment: Full-size Luxury Sedan Target Demographic: Buyers seeking comfortable, spacious, and refined American luxury Competitive Analysis Key Competitors: Lincoln Town Car, Cadillac DTS, Chrysler 300 Key Features Luxury Appointments: Spacious interior, quiet ride, available premium features Powertrain Options: V6 and V8 engine choices offering a balance of power and comfort Manual Value Proposition Cost Savings: Enables DIY repairs, significantly reducing labor costs Ease Of Use: Easy-to-follow step-by-step instructions and accompanying pictures Accessibility: Downloadable to multiple devices (PC, Mac, tablet, smartphone) 📋 Manual Details Coverage Areas General Coverage: Complete Workshop Service & Repair Procedures A-Z Model Variants Covered: All Models, Engines, Trim Levels, and Transmission Types Page Count Estimated Page Count: N/A (Digital Download) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital File (PDF) 📖 Manual Coverage Systems Covered Engine: Complete diagnosis, overhaul, timing, cooling, lubrication, fuel injection, emissions control, ignition Transmission: Automatic transmission service, overhaul, diagnosis, fluid changes Drivetrain: Front-wheel drive components, axles, CV joints Suspension: Front and rear suspension systems, shock absorbers, struts, control arms, ball joints, bushings Steering: Power steering system diagnosis and repair, steering column, tie rods Brakes: Hydraulic system, ABS, brake pads, rotors, calipers, parking brake Electrical System: Battery, charging system, starting system, lighting, fuses, relays, wiring diagrams HVAC: Air conditioning, heating, climate control system diagnosis and repair Body And Chassis: Body panel removal/installation, interior trim, glass, doors, hood, trunk Infotainment And Comfort: Audio system, navigation (if equipped), power accessories, seats Procedures Included Routine Maintenance: Oil change, filter replacement, fluid checks and top-offs, tire rotation, spark plug replacement Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), symptom-based diagnosis Repair And Overhaul: Engine internal component repair, transmission rebuild, brake caliper replacement, suspension component overhaul Electrical Diagnostics: Wiring harness repair, component testing, sensor diagnosis Climate Control Repair: Refrigerant handling, component replacement (compressor, condenser, evaporator) Body Repair: Panel alignment, door mechanism adjustment, glass replacement Safety Systems: Airbag system precautions and service, ABS component repair Technical Depth Depth: Comprehensive, covering basic maintenance to advanced component overhaul and diagnostics 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: High-quality, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) Software Requirements Required Software: Adobe Reader (or compatible PDF reader) ⚙️ Engine Specifications Primary Engine Engine 1 Displacement: 3.9L (3924cc) Engine 1 Type: 3.9L V6 (High Feature V6) Engine 1 Horsepower: 233 hp @ 5600 rpm Engine 1 Torque: 240 lb-ft @ 3200 rpm Performance Engine 2 Displacement: 4.6L (4600cc) Engine 2 Type: 4.6L V8 (Northstar V8) Engine 2 Horsepower: 292 hp @ 6300 rpm Engine 2 Torque: 289 lb-ft @ 3700 rpm Fuel System Fuel Delivery: Sequential Electronic Fuel Injection (SFI) Fuel Type: Regular Unleaded Gasoline Engine Management Ignition System: Coil-on-plug (COP) Emission Controls: Catalytic converters, evaporative emission control (EVAP) system 🔧 Transmission Standard Transmission Type: 4-Speed Automatic (4T65-E) Optional Transmission Type V8: 4-Speed Automatic (4T80-E) Features Transmission Features: Driver Shift Control (Driver selectable gear ranges) 📐 Dimensions Exterior Length: 200.4 inches Width: 73.1 inches Height: 57.9 inches Wheelbase: 115.2 inches Weights Curb Weight V6: Approximately 3,730 lbs Curb Weight V8: Approximately 3,820 lbs 🛡️ Safety Features Ratings NHTSA Frontal Crash Rating Driver: 5-Star NHTSA Frontal Crash Rating Passenger: 5-Star NHTSA Side Impact Rating Front Seat: 5-Star NHTSA Side Impact Rating Rear Seat: 5-Star IIHS Roof Strength Rating: Good Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Standard Traction Control System (TCS) Stability Control: Standard StabiliTrak Electronic...