The 2002 Buick LeSabre is a full-size sedan designed for comfort and reliability, representing a continuation of Buick's legacy for refined American motoring. Built on the robust GM H-body platform, this model offers a spacious interior and a smooth ride, making it an excellent choice for daily commuting and long-distance travel. It was available with two powerful and durable 3.8L V6 engines: the naturally aspirated L36, producing 175 horsepower, and the potent L67 supercharged variant, delivering 205 horsepower. Known for its quiet cabin, comfortable seating, and user-friendly technology, the LeSabre was positioned to compete with other large sedans of its era, emphasizing value and dependable performance. This comprehensive service and repair manual provides factory-level diagnostic and repair information for the 2002 Buick LeSabre. It covers all major vehicle systems, including engine mechanicals for both V6 engine options, engine management, the 4T65-E automatic transmission, drivetrain, suspension, steering, brakes, and the complete electrical system. Detailed procedures for scheduled maintenance, component replacement, troubleshooting, and diagnostics, including specific guidance for the supercharged engine and common repair issues, are thoroughly explained. With high-resolution diagrams and searchable text, this manual serves as an indispensable resource for owners and technicians seeking to maintain, diagnose, and repair their LeSabre with accuracy and efficiency. 🏷️ Basic Information Identification Make: Buick Model: Lesabre Year: 2002 Codes Chassis Code: H-body 👋 Introduction Market Position Segment: Full-Size Sedan Target Audience: Owners seeking to perform DIY maintenance and repairs, Independent Repair Shops Competitive Analysis Competitors: Ford Crown Victoria, Mercury Grand Marquis, Chevrolet Impala Key Features Value Proposition: Official OE-derived information for accurate and efficient repairs, saving money on labor costs. Convenience: Instant access, cross-device compatibility (PC, laptop, smartphone, tablet). Licensing: Officially Licensed, derived from OE materials by RepairSurge. 📋 Manual Details Coverage Areas Coverage Type: Comprehensive Service and Repair Page Count Estimated Page Count: Over 2500 pages (typical for OE service manuals) Manual Type Type: Digital Service Manual Software Language Language: English Format Format: PDF Download (Licensed) 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (2.5L L67 Supercharged V6, 3.8L Naturally Aspirated V6) Engine Management: Yes (EFI, ignition system, emissions control) Transmission: Yes (4T65-E Automatic) Drivetrain: Yes (front-wheel drive, axles, differential) Suspension: Yes (front MacPherson struts, rear coil springs, control arms, bushings) Steering: Yes (power steering system, steering column, rack and pinion) Brakes: Yes (front disc, rear drum/disc options, ABS, EBD) Electrical System: Yes (battery, charging system, starting system, lighting, fuses, relays) Body And Interior: Yes (panels, trim, seats, glass, doors, locks) HVAC: Yes (heating, ventilation, air conditioning, climate control) Body Electrical: Yes (power windows, mirrors, locks, convenience features) Diagnostics: Yes (OBD-II diagnostic trouble codes, diagnostic procedures) Procedures Included Maintenance: Yes (scheduled maintenance, oil changes, filter replacements) Repair: Yes (detailed step-by-step repair instructions for all systems) Troubleshooting: Yes (diagnostic flowcharts and common fault finding) Component Replacement: Yes (engine, transmission, suspension, brake components, etc.) Electrical Diagnostics: Yes (wiring diagrams, connector pinouts, testing procedures) Specifications And Tolerances: Yes (torque values, clearances, fluid capacities) Special Tools: Yes (listing of OE and aftermarket special tools required for repairs) Technical Depth Depth: Factory-Level Diagnostic and Repair Information 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable Text Printable: Printable Pages Print Quality Image Resolution: High-resolution diagrams and illustrations Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: L67 (Supercharged 3800 Series II) Displacement: 3.8 L (231 cu in) Configuration: V6 Aspiration: Supercharged Horsepower: 205 hp @ 5200 rpm Torque: 230 lb-ft @ 3600 rpm Secondary Engine Engine Code: L36 (Naturally Aspirated 3800 Series II) Displacement: 3.8 L (231 cu in) Configuration: V6 Aspiration: Naturally Aspirated Horsepower: 175 hp @ 4800 rpm Torque: 205 lb-ft @ 3200 rpm Fuel System Type: Sequential Multi-Port Fuel Injection (SFI) Fuel Type: Unleaded Gasoline (Premium recommended for L67) Maintenance Note Supercharger Oil: Specific procedures and fluid types for supercharger maintenance are covered. 🔧 Transmission Standard Type: 4-Speed Automatic Transaxle Model: 4T65-E Features Shifting Modes: Driver-selectable modes (e.g., Normal, Performance) Fluid Type Fluid Specification: Dexron-III H (or equivalent) 📐 Dimensions Exterior Length: 201.0 in (5105 mm) Width: 73.4 in (1864 mm) Height: 57.0 in (1448 mm) Wheelbase: 110.5 in (2807 mm) Interior Passenger Volume: 105.2 cu ft (2.98 m³) Cargo Trunk Capacity: 16.8 cu ft (0.48 m³) Weights Curb Weight: 3,553 - 3,661 lbs (1612 - 1661 kg) (Varies by trim and engine) 🛡️ Safety Features Ratings NHTSA Frontal Driver: ★★★★★ (5-Star) NHTSA Frontal Passenger: ★★★★★ (5-Star) NHTSA Side Driver: ★★★★☆ (4-Star) NHTSA Side Rear Passenger: ★★★★☆ (4-Star) Active Features ABS: Standard Anti-lock Braking System Traction Control: Available Traction Control System Passive Features Airbags: Driver and front passenger airbags, available side airbags Seatbelts: Front and rear seatbelts with pretensioners 💡 Technology Features Infotainment Audio System: Available AM/FM stereo with CD player, cassette, and premium Bose audio system. Climate Control: Available Dual-Zone Climate...