This manual covers the 1999 Buick Century, a mid-size sedan built on GM's W-body platform. Known for its comfortable ride and spacious interior, the Century was designed as an affordable personal vehicle, competing with models like the Ford Taurus and Toyota Camry. The third-generation model, produced from 1997 to 2005, offered a focus on practicality and ease of use, historically appealing to a mature demographic seeking reliable transportation. This particular model is equipped with a 3.1L V6 engine, producing approximately 155 horsepower and 185 lb-ft of torque, paired with a 4-speed automatic transmission. This comprehensive service and repair manual provides dealership-level detail for all repairs, maintenance, and diagnostics for the 1999 Buick Century. It includes step-by-step instructions, troubleshooting guides, technical specifications, and detailed wiring schematics for every major system, including the engine, transmission, brakes, suspension, HVAC, and electrical components. This resource is essential for owners and technicians alike, enabling accurate maintenance, efficient troubleshooting, and proper repair procedures to ensure the longevity and optimal performance of the vehicle. 🏷️ Basic Information Identification Make: Buick Model: Century Year: 1999 Generation Generation: Third Generation (C-Body) Codes Platform: GM W-body 👋 Introduction Market Position Vehicle Segment: Mid-size sedan, positioned as a comfortable and affordable personal vehicle. Competitive Analysis Key Competitors: Ford Taurus, Toyota Camry, Honda Accord, Chrysler Concorde/Intrepid. Key Features Manual Benefits: Provides dealership-level repair information, saves money on mechanic costs, empowers DIY repairs, offers comprehensive A-Z coverage, digital format eliminates physical wear and tear. 📋 Manual Details Coverage Areas Coverage Scope: All models and all repairs A-Z for the 1999 Buick Century. Page Count Page Count: Not specified, but described as comprehensive. Manual Type Manual Type: Factory Service and Repair Manual (FSM) Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Major Systems: Engine, Control System, Mechanical, Fuel, Emission Control, Cooling, Lube, Ignition, Starting, Charging, Transmission (Automatic & Manual), Driveline, Axle, Suspension, Brakes (Hydraulic & Parking), Steering (Column & Power), HVAC, Supplemental Restraint System (SRS), Seat Belts, Engine Immobilizer, Cruise Control, Wiper/Washer, Door Locks, Meter/Audio/Visual, Horn, Glass/Mirrors, Instrument Panel, Seats, Body/Exterior/Interior, Electrical, Multiplex/CAN Communication. Fuel Service Specifications: Detailed fuel system component testing, fuel pressure specifications, injector testing, and related diagnostic procedures. Emission Control: Coverage of emission control systems, catalytic converter, EGR system, evaporative emission control (EVAP), and associated sensors and diagnostics. Brakes: Hydraulic brake system diagnostics, component replacement (master cylinder, calipers, lines), ABS system testing and repair. Procedures Included Repair Procedures: Step-by-step repair instructions, diagnostic procedures, maintenance, servicing, component replacement, system adjustments, troubleshooting, wiring schematic interpretation. Engine Overhaul Procedures: Complete engine overhaul instructions, including cylinder head removal/installation, piston and connecting rod service, crankshaft and bearing inspection. Technical Depth Depth Of Information: Vehicle-specific, factory-level detail comparable to technician use at dealerships. Includes detailed instructions, diagrams, illustrations, wiring schematics, and specifications. Wiring Schematics: Comprehensive, vehicle-specific wiring schematics covering all electrical circuits, including power distribution, grounds, and component connections. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: All pages are printable, with the ability to blow up images for enlarged copies. Binding Type Binding Type: Digital (PDF) - No physical binding. Paper Type Paper Type: Not applicable (digital format). ⚙️ Engine Specifications Primary Engine Engine Type: 3.1L (189 cu in) V6 (L82) Performance Horsepower: Approx. 155 hp @ 4800 rpm (typical for 1999 L82) Torque: Approx. 185 lb-ft @ 3200 rpm (typical for 1999 L82) Fuel System Fuel Delivery: Sequential Fuel Injection (SFI) Cooling Cooling System Type: Pressurized liquid cooling system Lube Oil Capacity: Approx. 4.5 quarts (4.3 L) with filter for 3.1L V6 Ignition Ignition System: Distributorless Ignition System (DIS) Maintenance Spark Plug Type: Refer to manual for specific P/N (e.g., AC Delco Professional Iridium) 🔧 Transmission Standard Transmission Type: 4-speed automatic (4T65-E) Optional Optional Transmission: No manual transmission was typically offered for the 1999 Buick Century in North America. Features Transmission Fluid: Dexron-III (or equivalent specified by GM) Maintenance Transmission Fluid Capacity: Approx. 8.2 quarts (7.8 L) for 4T65-E (dry fill) 📐 Dimensions Exterior Wheelbase: 109.0 inches (2769 mm) Length: 198.9 inches (5052 mm) Width: 70.3 inches (1786 mm) Height: 55.7 inches (1415 mm) Weights Curb Weight: Approx. 3,200 - 3,400 lbs (1450 - 1542 kg), depending on trim and options. Gross Vehicle Weight Rating: Refer to vehicle VIN plate or manual for exact GVWR. Cargo Trunk Volume: Approx. 16.0 cubic feet (0.45 m³) 🛡️ Safety Features Ratings NHTSA Frontal Crash Rating: Refer to NHTSA archives for specific 1999 ratings, but generally performed moderately. IIHS Crash Test Performance: Refer to IIHS archives for specific 1999 ratings. Active Features ABS: Standard on most trims, Anti-lock Braking System. Traction Control: Optional, Traction Control System (TCS). Passive Features Airbags: Driver and front passenger airbags (SRS). Seat Belts: Front and rear seat belts, with driver and front passenger pretensioners. 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with CD or cassette...