The 2004 Buick Park Avenue is a full-size luxury sedan, representing Buick's heritage of crafting comfortable, quiet, and well-appointed vehicles. Built on the GM G-body (W-body) platform, this model offers a smooth ride and a spacious interior, characteristic of the Park Avenue's legacy. It is powered by a 3.8L V6 engine, available in both naturally aspirated (L36) and supercharged (L67) configurations, paired with a 4-speed automatic transmission. Safety features include front and available side-impact airbags, Anti-lock Braking System (ABS), and an optional Traction Control System (TCS) and StabiliTrak. Notable technology includes an available premium audio system, optional Heads-Up Display (HUD), and a telematics system. This Service and Repair Manual provides comprehensive, factory-level information for the 2004 Buick Park Avenue, covering all models and repairs A-Z. It is designed to assist DIY mechanics, car enthusiasts, and professional technicians. The manual details engine systems, drivetrain, chassis, comfort and convenience systems, and electrical/electronic systems. It includes scheduled maintenance procedures, fluid specifications, diagnostic flowcharts, troubleshooting guides, and step-by-step repair instructions for all mechanical, electrical, and body components. Complete wiring diagrams, illustrations, and technical data are provided to ensure accurate and efficient maintenance and repair. 🏷️ Basic Information Identification Make: Buick Model: Park Avenue Year: 2004 Codes Platform: GM G-body (W-body) 👋 Introduction Market Position Target Audience: DIY mechanics, car enthusiasts, and professional technicians seeking dealership-level repair information. Vehicle Segment: Full-size Luxury Sedan Competitive Analysis Value Proposition: Provides the exact same factory-level information used by dealership technicians, offering comprehensive, vehicle-specific repair guidance, saving time and money compared to generic guides or outsourced repairs. Key Features Features: Vehicle-specific data, step-by-step instructions, diagrams, illustrations, wiring schematics, printable pages, zoomable images, digital convenience, comprehensive A-Z coverage. 📋 Manual Details Coverage Areas Coverage: All Models & All Repairs A-Z Page Count Page Count: Not Specified (but implied to be comprehensive) Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: PDF Download Digital Features: Searchable text within the PDF, ability to zoom in on diagrams and illustrations for clarity. 📖 Manual Coverage Systems Covered Engine Systems: Engine, Control System, Fuel Service Specifications, Emission Control, Intake Exhaust Cooling, Lube, Ignition Starting Charging Drivetrain Systems: Auto Transmission Clutch, Manual Transmission (if applicable), Transfer Propeller Shaft, Drive Shaft, Differential, Axle Suspension Chassis Systems: Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering Comfort And Convenience Systems: Air Condition, Cruise Control, Wiper & Washer, Door Lock, Seat, Engine Hood/ Door, Exterior & Interior, Windshield/Glass Mirror, Instrument Panel Electrical And Electronic Systems: Suppl Restraint System, Seat Belt, Engine Immobilizer, Meter Audio/Visual, Horn, Electrical, Multiplex/ Can Communication Body And Interior: Body panels, doors, windows, mirrors, interior trim, seats, headliner, carpeting. Wheels And Tires: Tire specifications, wheel types, alignment, balancing, lug nut torque specifications. Procedures Included Diagnostic Procedures: Diagnosis of all systems covered in the manual. Maintenance Procedures: Scheduled maintenance, fluid changes, filter replacements, inspections. Repair Procedures: Step-by-step instructions for all mechanical, electrical, and body component repairs. Technical Data Provision: Specifications, diagrams, illustrations, wiring schematics. Troubleshooting Guides: Systematic diagnostic flowcharts and troubleshooting trees for common faults and symptoms. Technical Depth Depth: Factory High-Detail Repair Manuals, equivalent to dealership technician resources. Wiring Schematics: Complete wiring diagrams for all electrical systems, including power distribution, lighting, engine controls, comfort features, and safety systems. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: All pages are printable. Binding Type Binding Type: Digital (PDF download) - no physical binding. Paper Type Paper Type: N/A (Digital format) Compatibility Operating Systems: Windows Vista (32/64), XP, ME, 98, NT, 2000, and Mac compatible. Software Requirements Required Software: Adobe PDF Reader and Winzip (free online). ⚙️ Engine Specifications Primary Engine Engine Options: 3.8L V6 (L36 Naturally Aspirated & L67 Supercharged) Performance L36 Horsepower: 205 hp @ 5200 rpm L36 Torque: 230 lb-ft @ 4000 rpm L67 Horsepower: 240 hp @ 5200 rpm L67 Torque: 280 lb-ft @ 3600 rpm Fuel System Fuel Delivery: Sequential Fuel Injection (SFI) Engine Management ECU Type: GM Powertrain Control Module (PCM) Engine Type Engine Configuration: Overhead Valve (OHV) V6 🔧 Transmission Standard Transmission Type: 4-speed automatic (4T65-E) Optional Optional Transmission: 4-speed automatic (4T65-E HD - for supercharged models) Features Transmission Features: Driver Shift Control (driver-selectable gear ranges), electronically controlled. 📐 Dimensions Exterior Wheelbase: 110.5 inches (2807 mm) Length: 202.0 inches (5131 mm) Width: 73.4 inches (1864 mm) Height: 56.5 inches (1435 mm) Weights Curb Weight: Approx. 3,700 - 3,900 lbs (1678 - 1769 kg), varies by model/trim. Gross Vehicle Weight Rating: Approx. 4,700 - 4,900 lbs (2132 - 2223 kg), varies by model/trim. 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4 out of 5 stars (for 2004 model). Active Features Active Safety: Anti-lock Braking System (ABS), Traction Control System (TCS), StabiliTrak (optional on some models). Passive Features Passive Safety: Front airbags, front side-impact airbags, available rear side-impact airbags, advanced seat belt systems,...