The 2007 Buick Lucerne is a full-size luxury sedan designed to offer a comfortable and quiet ride, building on Buick's heritage of producing well-equipped American vehicles. Sharing its platform with the Cadillac DTS, the Lucerne was engineered with a focus on smooth power delivery, available with naturally aspirated and supercharged V6 engines, as well as a powerful V8 option. Its spacious interior, generous legroom, and comfortable seating make it well-suited for long-distance travel and daily commuting, positioning it competitively against other large sedans of its era. This comprehensive workshop service repair manual in English provides in-depth guidance for all models, engines, trim levels, and transmissions of the 2007 Buick Lucerne. It covers essential maintenance procedures, detailed troubleshooting guides, and step-by-step repair instructions for all major systems, including the engine, transmission, brakes, electrical systems, suspension, steering, body, chassis, cooling, exhaust, fuel, and HVAC. The manual also includes technical specifications, diagnostic procedures, and safety guidelines, making it an indispensable resource for owners, mechanics, and technicians seeking to maintain and repair the vehicle effectively. 🏷️ Basic Information Identification Make: Buick Model: Lucerne Year: 2007 Codes Chassis Code: GMX319 👋 Introduction Market Position Segment: Full-size Luxury Sedan Competitive Analysis Competitors: Ford Crown Victoria/Mercury Grand Marquis, Chrysler 300, Toyota Avalon, Lincoln Town Car Key Features Platform: GM Epsilon platform (shared with Cadillac DTS) Powertrain Options: Emphasis on V6 and V8 engine options for smooth power delivery. Ride Comfort: Focus on comfortable ride quality and quiet cabin. 📋 Manual Details Coverage Areas Scope: All models, engines, trim levels, and transmissions Page Count Estimated Pages: Comprehensive (Exact count not specified, implies extensive coverage) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Delivery Format: Downloadable Digital File (PDF) 📖 Manual Coverage Systems Covered Engine: Internal combustion engine diagnostics, repair, overhaul, and maintenance for all specified engine options. Transmission: Automatic transmission repair, diagnosis, fluid service, and component replacement. Brakes: Brake system inspection, repair, hydraulic components, ABS system diagnostics, and rotor/pad replacement. Electrical: Complete electrical system schematics, component testing, diagnosis of lighting, power accessories, starting/charging system, and body control modules. Suspension Steering: Front and rear suspension component diagnosis, alignment specifications, steering system repair, and power steering system service. Body Chassis: Body panel repair, interior trim removal/installation, door and window mechanisms, chassis component inspection, and rust repair. Cooling Exhaust: Cooling system service (radiator, thermostat, water pump), HVAC system diagnosis, and exhaust system repair. Fuel Emissions: Fuel system components, fuel pump, injectors, evaporative emissions control system (EVAP) diagnosis. HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis, refrigerant handling, component replacement (compressor, evaporator, heater core). Procedures Included Maintenance: Scheduled maintenance, fluid level checks, filter replacement, lubrication points, and routine inspections. Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting guides, and common fault identification. Repair: Detailed step-by-step instructions for component removal, disassembly, repair, and reassembly. Installation: Procedure for installing new or replacement parts and accessories. Diagnostics: OBD-II diagnostics, sensor testing, actuator testing, and powertrain control module (PCM) related diagnostics. Specifications: Torque specifications, clearances, fluid capacities, and alignment data. Technical Depth Depth: Comprehensive from basic maintenance to in-depth mechanical and electrical repairs, including engine and transmission rebuilds. 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text content Print Quality Printability: Printable (individual pages or entire document) Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine 3.8L V6 Supercharged: 3.8L Series II Supercharged V6 (L32), 275 hp @ 5200 rpm, 297 lb-ft @ 3600 rpm Engine 3.9L V6 Flexfuel: 3.9L V6 (LZ9), 275 hp @ 6000 rpm, 275 lb-ft @ 4000 rpm (Gasoline); 270 hp @ 6000 rpm, 271 lb-ft @ 4000 rpm (E85) Engine 4.6L V8 Northstar: 4.6L Northstar V8 (LD8), 275 hp @ 6000 rpm, 295 lb-ft @ 4400 rpm Performance Engine Type Details: Naturally aspirated and supercharged V6, naturally aspirated V8 configurations. Fuel System Injection Type: Sequential Multi-Port Fuel Injection (MPFI) or Direct Injection (DI) depending on specific engine. Fuel Type: Unleaded gasoline, E85 compatible for the 3.9L V6 FlexFuel. 🔧 Transmission Standard Transmission Type: 4-speed automatic (4T65-E) for 3.8L V6 and 3.9L V6 engines. Optional Transmission Type V8: 4-speed automatic (4T80-E) for 4.6L Northstar V8 engines. Features Transmission Features: Driver Shift Control (DSC) manual shifting mode on select models. 📐 Dimensions Exterior Length: Approximately 200.7 inches (5098 mm) Width: Approximately 73.0 inches (1854 mm) Height: Approximately 57.6 inches (1463 mm) Wheelbase: Approximately 116.0 inches (2946 mm) Interior Front Headroom: Approx. 39.4 inches (1001 mm) Rear Headroom: Approx. 37.6 inches (955 mm) Front Legroom: Approx. 42.0 inches (1067 mm) Rear Legroom: Approx. 37.7 inches (958 mm) Cargo Trunk Volume: Approximately 15.1 cubic feet (427 L) Weights Curb Weight: Varies by model, generally between 3700 - 4000 lbs (1678 - 1814 kg) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star Rating (Driver and Passenger) NHTSA Side Impact: 5-Star Rating (Front and Rear...