2009 Buick Enclave

Here’s a breakdown of common issues and complaints reported by owners of the 2009 Buick Enclave. The 2009 Buick Enclave is a popular full-size crossover SUV known for its comfortable ride, spacious interior, and stylish design. It came standard with a 3.6L V6 engine producing 288 horsepower and 270 lb-ft of torque, paired with a 6-speed automatic transmission. Some owners appreciate the Enclave’s smooth ride and ample cargo space, while common complaints revolve around issues with the timing chain, transmission, and electrical components.

Engine

3.6L V6

• Timing Chain Wear/Failure
  • Description/Symptoms: A stretched or worn timing chain can cause the check engine light to illuminate. The engine may also exhibit rough idling, misfires, and decreased performance. A rattling noise from the engine, especially upon startup, is another symptom.
  • Solution: Replacement of the timing chain, guides, tensioners, and potentially the camshaft actuators.
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found
• High Pressure Fuel Pump (HPFP) Failure
  • Description/Symptoms: Engine stalling, rough idling, inability to start, and a check engine light.
  • Solution: Replace the high-pressure fuel pump.
  • Estimated Cost to Fix: $700 - $1,200+
  • Recalls: None Found

Transmission

6-Speed Automatic (Hydra-Matic 6T70)

• Wave Plate Failure
  • Description/Symptoms: Harsh shifting, slipping between gears, loss of certain gears (often 3rd and 5th), and the check engine light illuminating. The wave plate is a thin, stamped metal part within the transmission that can crack or break.
  • Solution: Transmission rebuild or replacement, including wave plate replacement and inspection of other internal components.
  • Estimated Cost to Fix: $3,000 - $5,000+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, difficulty shifting, and potential stalling.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $800-$1,500+
  • Recalls: None Found

Suspension

• Strut/Shock Absorber Failure
  • Description/Symptoms: Bouncy ride, excessive body roll in corners, and leaking fluid from the struts/shocks. Uneven tire wear can also be a sign.
  • Solution: Replacement of the affected struts or shocks.
  • Estimated Cost to Fix: $300 - $800+ (per pair)
  • Recalls: None Found
• Rear Suspension Leveling System Failure (if equipped)
  • Description/Symptoms: Rear of the vehicle sags, especially when loaded. The air compressor for the leveling system may run constantly or not at all.
  • Solution: Replacement of the air compressor, air shocks, and/or height sensors.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery drains overnight or after a short period of inactivity. This can be due to a parasitic draw from a faulty module or component.
  • Solution: Diagnosing and repairing the source of the parasitic draw, which may involve replacing a module (e.g., Body Control Module, radio, etc.).
  • Estimated Cost to Fix: $100 - $1,000+ (depending on the source of the drain)
  • Recalls: None Found
• Power Window/Door Lock Issues
  • Description/Symptoms: Intermittent or complete failure of power windows or door locks. This can be caused by faulty switches, wiring problems, or a failing Body Control Module (BCM).
  • Solution: Replacing the faulty switch, repairing the wiring, or replacing the BCM.
  • Estimated Cost to Fix: $100 - $500+ (per window/door)
  • Recalls: None Found

Exterior

• Liftgate Actuator Failure
  • Description/Symptoms: The power liftgate fails to open or close properly. The actuator motor may be weak or completely dead.
  • Solution: Replacement of the liftgate actuator.
  • Estimated Cost to Fix: $300 - $700+
  • Recalls: None Found

Interior

• Air Conditioning Issues
  • Description/Symptoms: Weak or no cold air. This can be caused by a refrigerant leak, a faulty compressor, or a clogged expansion valve.
  • Solution: Repairing the refrigerant leak, replacing the compressor, or replacing the expansion valve.
  • Estimated Cost to Fix: $200 - $1,200+
  • Recalls: None Found
• Delamination of the Radio/Navigation Screen
  • Description/Symptoms: The protective coating on the radio and navigation screen can bubble and peel off, making it difficult to see the display.
  • Solution: Replacement of the radio/navigation unit.
  • Estimated Cost to Fix: $300-$1,000+
  • Recalls: None Found

Summary

The 2009 Buick Enclave, while offering comfort and space, is prone to some notable issues. The timing chain problems in the 3.6L V6 engine and the wave plate failures in the 6-speed transmission are particularly concerning due to their high repair costs. Electrical gremlins and suspension issues can also add to the ownership costs. Overall, prospective buyers should be aware of these potential problems and factor them into their purchasing decision and budget for potential repairs.