This manual covers the Buick Regal, a mid-size sedan produced for the model years 1997 through 2004 as part of its Fourth Generation on the GM W-body platform. Known for Buick's legacy of comfort and refinement, the Regal offered a choice between a naturally aspirated 3.8L V6 engine producing approximately 205 hp and 230 lb-ft of torque, or a supercharged 3.8L V6 variant delivering around 240 hp and 280 lb-ft of torque. Both engines were paired with an electronically controlled 4-speed automatic transmission. The vehicle featured Anti-lock Braking System (ABS) and a supplemental restraint system including front airbags and seat belts, with optional side airbags available in later years. The 3800 V6 engine family itself was recognized for its reliability and performance, earning multiple Ward's 10 Best Engines awards during this period. This comprehensive Factory Service and Repair Manual provides in-depth, dealership-level information for all aspects of the Buick Regal. It covers a vast range of maintenance, diagnostic, and repair procedures from A-Z, including detailed instructions, diagrams, illustrations, and wiring schematics. Key areas addressed include powertrain systems (engine, transmission, cooling, fuel, exhaust), chassis components (brakes, steering, suspension), body and interior systems, and electrical and electronic systems. This manual is designed to assist DIY enthusiasts, independent repair shops, and Buick Regal owners in effectively maintaining, troubleshooting, and repairing their vehicles, offering a valuable resource for preserving the car's performance and longevity. 🏷️ Basic Information Identification Make: Buick Model: Regal Model Years Covered: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Generation: Fourth Generation (L67/W20, 1997-2004) Codes Platform Code: GM W-body 👋 Introduction Market Position Target Audience: DIY enthusiasts, independent repair shops, Buick Regal owners Competitive Analysis Value Proposition: Provides dealership-level repair information in a convenient, digital format, saving time and money. Key Features Unique Selling Points: Vehicle-specific (not generic), A-Z coverage, included wiring schematics, PDF format with print capability. Manual Usability Usability Benefit: Easy-to-use PDF, no flipping through multiple books, print only required pages. 📋 Manual Details Coverage Areas All Models Covered: Yes Repair Coverage: A-Z (All Repairs) Page Count Estimated Page Count: Extensive (detailed instructions, diagrams, schematics) Manual Type Manual Type: Factory Service and Repair Manual Language Language: English Format Format: PDF Digital Compatibility: Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac Print Capability: Fully Printable File Access: Speed Download Requirements Required Software: Adobe PDF Reader, Winzip 📖 Manual Coverage Systems Covered Powertrain: Engine, Control System, Fuel Service Specifications, Emission Control, Intake Exhaust Cooling, Lube, Ignition Starting Charging, Auto Transmission Clutch, Manual Transmission, Transfer Propeller Shaft, Drive Shaft, Differential, Axle Suspension Chassis: Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering Body And Interior: Air Condition, Suppl Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter Audio/Visual, Horn, Windshield/Glass Mirror, Instrument Panel, Seat, Engine Hood/ Door, Exterior & Interior Electrical And Electronics: Electrical, Multiplex/Can Communication Procedures Included Diagnostic Procedures: Yes (Detailed diagnostics for all systems) Maintenance Procedures: Yes (Complete maintenance schedules and procedures) Repair Procedures: Yes (Step-by-step repair instructions) Component Rebuild: Yes (Implied by comprehensive repair coverage) Technical Depth Depth Of Information: Factory High Detail (Exact same manual used by technicians) Diagrams And Illustrations: Extensive Step-by-Step Instructions, Diagrams, Illustrations Wiring Schematics: Included Specifications: Included (Repair specifications) 📊 Manual Specifications File Format Digital File Type: PDF Print Quality Print Options: High Quality, Enlargable Images Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Portability Portability Feature: Print only what you need, take to workshop Durability Durability Benefit: No more greasy or torn paper manuals ⚙️ Engine Specifications Primary Engine Engine Options: 3.8L V6 (Naturally Aspirated L36), 3.8L V6 Supercharged (L67) Performance 3.8L V6 L36 (Na) Horsepower: Approx. 205 hp @ 5200 rpm 3.8L V6 L36 (Na) Torque: Approx. 230 lb-ft @ 3600 rpm 3.8L V6 L67 (Supercharged) Horsepower: Approx. 240 hp @ 5200 rpm 3.8L V6 L67 (Supercharged) Torque: Approx. 280 lb-ft @ 3600 rpm Fuel System Fuel Delivery: Sequential Fuel Injection (SFI) Cooling System Cooling Type: Liquid-Cooled 🔧 Transmission Standard Standard Transmission: 4-speed Automatic (4T65E) Optional Optional Transmission: N/A (Automatic was standard across most models) Features Transmission Features: Electronically Controlled 📐 Dimensions Exterior Body Style: 4-door Sedan Weights Curb Weight Range: Approx. 3,400 - 3,600 lbs (depending on configuration) 🛡️ Safety Features Ratings NHTSA Ratings: Varied by year, generally good for its class at the time. Active Features Active Safety Features: Anti-lock Braking System (ABS) Passive Features Passive Safety Features: Front airbags, available side airbags (later years), seat belts Restraint System Supplemental Restraint System Coverage: Included (airbags, seat belts) 💡 Technology Features Infotainment Infotainment Features: AM/FM Stereo with Cassette and CD player (optional), premium audio systems available. Driver Assistance Driver Assistance Features: Cruise Control Connectivity Connectivity Options: Limited by modern standards; primarily analog controls. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles...