🏷️ Basic Information

Make:

Buick

Model:

Park Avenue

Year:

2005

Platform:

G

👋 Introduction

Market Position:

The 2005 Buick Park Avenue was positioned as a flagship full-size luxury sedan, offering comfort, a quiet ride, and a premium interior.

Competitive Analysis:

Competed against other American luxury sedans such as the Cadillac DTS, Lincoln Town Car, and well-equipped versions of mainstream sedans like the Toyota Avalon and Chrysler 300.

Key Features:

Emphasis on ride comfort, spacious interior, advanced (for its time) features, and a powerful V8 engine option. The manual reflects the complexity of these luxury features.

Manual Value Proposition:

This manual provides dealership-level technical data, enabling owners and independent technicians to perform accurate diagnostics and repairs, saving time and money compared to relying solely on dealer services.

📋 Manual Details

Coverage:

All Models & All Repairs A-Z

Page Count Estimated:

Varies by specific drivetrain and options, typically 2000+ pages for a complete factory service manual

Manual Type:

Service and Repair Manual

Language:

English

Format:

PDF Download

Operating System Compatibility:

Windows Vista 32 and 64, XP, ME, 98, NT, 2000, and Mac OS.

📖 Manual Coverage

Engine Systems:

Engine Mechanical, Control System, Fuel Service, Emission Control, Intake, Exhaust, Cooling, Lube, Ignition, Starting, Charging

Transmission Systems:

Automatic Transmission, Manual Transmission (if applicable, though unlikely for Park Avenue), Transfer Propeller Shaft, Drive Shaft, Differential, Axle

Suspension Steering:

Suspension, Tire & Wheel, Steering Column, Power Steering

Braking Systems:

Brake Control, Brake, Parking Brake

Comfort Convenience:

Air Conditioning, Seat Belt, Cruise Control, Wiper & Washer, Door Lock, Horn

Interior Systems:

Suppl Restraint System (SRS), Engine Immobilizer, Meter Audio/Visual, Instrument Panel, Seat, Exterior & Interior Trim

Electrical Systems:

Electrical, Multiplex/CAN Communication

Body Systems:

Engine Hood/Door, Windshield/Glass Mirror

Diagnostic Procedures:

Troubleshooting Guides, Diagnostic Trouble Codes (DTCs) interpretation, circuit testing

Repair Procedures:

Step-by-step repair instructions for all major components and systems

Maintenance Procedures:

Scheduled maintenance tasks, fluid changes, filter replacements

Calibration Procedures:

Component calibration and initialization procedures where applicable

Wiring Schematics:

Includes comprehensive wiring schematics for all electrical systems, crucial for diagnosing electrical faults.

Technical Depth:

Factory-level diagnostic and repair procedures, intended for use by professional technicians. Includes detailed explanations, diagrams, and schematics.

Technical Depth Detail:

Detailed torque specifications, tolerances, diagnostic charts, and component identification.

📊 Manual Specifications

File Format Details:

Adobe PDF. Compatible with Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac OS. Requires Adobe PDF Reader.

Print Quality:

High resolution, printable pages with ability to enlarge images and diagrams. Print only required pages.

Binding Type:

Digital (PDF download). No physical binding.

Paper Type:

Not Applicable (Digital File). User prints on their choice of paper.

Software Requirements:

Adobe PDF Reader, Winzip (or equivalent unzipping utility).

⚙️ Engine Specifications

Engine Description Primary:

3.8L (3800 Series III) V6 Supercharged (L32)

Engine Displacement Primary:

3.8 Liters (231 cubic inches)

Engine Configuration Primary:

Naturally Aspirated V6 (Standard), Supercharged V6 (Optional on most trims)

Horsepower Primary Naturally Aspirated:

205 hp @ 5200 rpm (approx.)

Torque Primary Naturally Aspirated:

230 lb-ft @ 4000 rpm (approx.)

Horsepower Primary Supercharged:

240 hp @ 5200 rpm (approx.)

Torque Primary Supercharged:

280 lb-ft @ 3600 rpm (approx.)

Fuel Delivery System:

Sequential Electronic Fuel Injection (SEFI), Returnless Fuel System

Fuel Type Required:

87 Octane (Regular Unleaded) for naturally aspirated; 91 Octane (Premium Unleaded) recommended for supercharged models for optimal performance.

Oil Capacity With Filter:

4.5 US quarts (4.3 Liters) with filter change for 3.8L V6

Recommended Oil Viscosity:

SAE 3.8L: 5W-30 (API Service Classification SG or higher, GM specification GM6094M or equivalent)

Coolant Capacity:

Approximately 10.0 US quarts (9.5 Liters) for 3.8L V6

Recommended Coolant:

Dex-Cool® (Orange, Extended Life) 50/50 mixture with distilled water.

🔧 Transmission

Transmission Type Standard:

4-Speed Automatic (4T65-E)

Transmission Type Optional:

Supercharged models typically use a heavy-duty version of the 4T65-E

Transmission Features:

Driver Shift Control (DSC) for manual selection of gears, electronic shift control.

Transmission Fluid Type:

Dexron-VI Automatic Transmission Fluid (ATF) - although Dexron-III was original, Dexron-VI is backward compatible and recommended for newer fill.

Transmission Fluid Capacity:

Approximately 5.0 - 6.0 US quarts (4.7 - 5.7 Liters) for a fluid change (dry fill is higher).

📐 Dimensions

Length:

203.7 inches (5174 mm)

Width:

73.1 inches (1857 mm)

Height:

57.3 inches (1455 mm)

Wheelbase:

112.2 inches (2850 mm)

Curb Weight Base Model:

Approximately 3,700 - 3,800 lbs (1678 - 1724 kg)

Curb Weight Supercharged:

Approximately 3,900 - 4,000 lbs (1769 - 1814 kg)

Trunk Volume:

17.0 cubic feet (481 Liters)

🛡️ Safety Features

NHTSA Front Driver Impact:

5 Stars

NHTSA Front Passenger Impact:

5 Stars

NHTSA Side Driver Impact:

4 Stars

NHTSA Side Passenger Impact:

4 Stars

IIHS Frontal Offset:

Good

IIHS Side Impact:

Acceptable

Active Safety Features:

Anti-lock Braking System (ABS), Traction Control System (TCS), StabiliTrak (Electronic Stability Control - optional on some trims).

Passive Safety Features:

Frontal airbags, Side-impact airbags (door-mounted), Front and rear seat belts with pretensioners, LATCH (Lower Anchors and Tethers for Children) system.

💡 Technology Features

Infotainment System:

Available premium audio systems (e.g., Bose), CD player, optional navigation system, steering wheel audio controls.

Driver Assistance Features:

Park Assist (rear parking sensors), StabiliTrak (stability control, optional), Driver Information Center (DIC).

Connectivity Features:

OnStar® communications system (subscription-based service).

🔧 Maintenance

Oil Change Interval:

Every 7,500 miles (12,000 km) or 6 months, whichever comes first, when using synthetic oil. 3,000-5,000 miles for conventional oil.

Tire Rotation Interval:

Every 7,500 miles (12,000 km)

Engine Air Filter Replacement:

Every 30,000 miles (48,000 km) or as needed based on inspection.

Cabin Air Filter Replacement:

Every 15,000 miles (24,000 km) or annually.

Spark Plug Replacement:

3.8L V6 (Naturally Aspirated): 100,000 miles (160,000 km) with platinum-tipped plugs. 3.8L V6 (Supercharged): 100,000 miles (160,000 km) with specific heat range plugs.

Brake Fluid Type:

DOT 3

Power Steering Fluid Type:

GM Power Steering Fluid or Dexron-III/VI ATF

Coolant Type And Mix:

Dex-Cool® (Orange, Extended Life) 50/50 mixture with distilled water.

Known Issues Engine:

Lower intake manifold gasket leaks (pre-2004 models, less common on 2005), Northstar engine (if equipped, though less common on Park Avenue) had head gasket issues. Supercharger belt wear.

Known Issues Transmission:

Torque converter shudder or failure on high-mileage vehicles (4T65-E), occasional solenoid issues.

Known Issues Suspension:

Front strut mounts, worn control arm bushings, rear air suspension compressor failure (if equipped).

Known Issues Electrical:

Window motor failures, HVAC blower motor resistor failure, instrument cluster pixel issues (common across GM vehicles of this era).

📚 Vehicle History

Brand Heritage:

Buick, a division of General Motors, has a long history dating back to 1899, known for producing comfortable and luxurious vehicles.

Model Evolution Park Avenue:

The Park Avenue nameplate has been used by Buick since 1971, evolving from a luxury trim level to a distinct model. The 2005 model represents the final year of the fifth generation, which debuted in 1997.

Production Location:

Detroit-Hamtramck Assembly Plant, Michigan, USA

Production Years Of Generation:

1997-2005 (Fifth Generation)

🏆 Awards & Recognition

Recognitions:

Often praised for its quiet interior and comfortable ride. May have received various segment-specific awards for luxury and comfort from automotive publications during its production run.