2004 Buick Park Avenue
2004 Buick Park Avenue
Overview
The 2004 Buick Park Avenue, a full-size luxury sedan, was known for its comfortable ride and spacious interior. It offered a refined driving experience for its era, targeting buyers seeking a smooth and quiet commute. While generally considered a reliable vehicle, like any car, it had specific areas that owners reported issues with over time. This analysis focuses on common mechanical and electrical concerns beyond routine maintenance, providing insights into potential repair costs and solutions for owners.
Engine
3.8L V6 (3800 Series II)
Intake Manifold Gasket Leaks
- Symptoms: Coolant leaks, engine overheating, rough idle, sweet smell from coolant.
- Solution: Replacement of the intake manifold gaskets. Later models used a more robust design.
- Cost: $400 - $700
Crankshaft Position Sensor Failure
- Symptoms: Engine stalling, no-start condition, check engine light.
- Solution: Replacement of the crankshaft position sensor.
- Cost: $150 - $300
3.8L Supercharged V6 (3800 Series III)
Supercharger Belt Wear
- Symptoms: Reduced engine power, whining noise from the engine bay.
- Solution: Replacement of the supercharger belt.
- Cost: $100 - $200
Head Gasket Failure
- Symptoms: Coolant loss, white smoke from exhaust, engine overheating, milky oil.
- Solution: Replacement of head gaskets. This can be a significant repair.
- Cost: $1200 - $2000
Transmission
4T65-E Automatic Transmission
Torque Converter Clutch (TCC) Solenoid Failure
- Symptoms: Shuddering at highway speeds, transmission slipping, P0742 or P0748 codes.
- Solution: Replacement of the TCC solenoid.
- Cost: $300 - $600
Transmission Fluid Leaks
- Symptoms: Leaking fluid from transmission seals or lines, low fluid level.
- Solution: Repair or replacement of leaking seals or lines.
- Cost: $200 - $500
Suspension
Standard Chassis
Strut Mount Bearing Failure
- Symptoms: Clunking or popping noises when turning the steering wheel, especially at low speeds.
- Solution: Replacement of the strut mount bearings.
- Cost: $250 - $450
Rear Air Suspension Issues (if equipped)
- Symptoms: Vehicle sagging in the rear, loss of ride height, compressor failure.
- Solution: Repair or replacement of air springs, lines, or compressor. Conversion to conventional springs is an option.
- Cost: $500 - $1500
Electrical
Body Control Module (BCM)
BCM Malfunctions
- Symptoms: Intermittent issues with power windows, locks, interior lights, or dashboard warnings.
- Solution: Reprogramming or replacement of the BCM.
- Cost: $500 - $1000
Alternator
Alternator Failure
- Symptoms: Battery warning light illuminated, dimming headlights, electrical system failures.
- Solution: Replacement of the alternator.
- Cost: $400 - $700
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Climate Control System
Blend Door Actuator Failure
- Symptoms: Inability to control temperature or direct airflow to specific vents.
- Solution: Replacement of the blend door actuator(s).
- Cost: $200 - $400
Power Seat Motors
Power Seat Motor Failure
- Symptoms: Power seats become inoperable or move erratically.
- Solution: Replacement of the affected power seat motor.
- Cost: $300 - $500
Summary Verdict
The 2004 Buick Park Avenue generally offers decent reliability, particularly with the robust 3800 V6 engines. However, potential owners should be aware of common issues such as intake manifold gasket leaks and torque converter solenoid problems. The optional rear air suspension can also be a source of costly repairs if it fails. Electrical components like the BCM and alternator are also points to monitor. Addressing these potential issues proactively can help maintain the Park Avenue’s comfortable and luxurious driving experience.