2007 Buick LaCrosse

Here’s a breakdown of common issues and complaints reported by owners of the 2007 Buick LaCrosse, organized by category and engine/transmission configuration.

The 2007 Buick LaCrosse is a mid-size sedan known for its comfortable ride and spacious interior. It was available with three engine options: a 3.8L Series III V6 producing 200 horsepower and 230 lb-ft of torque, a 3.6L DOHC V6 producing 240 horsepower and 225 lb-ft of torque, and a 3.8L Supercharged V6 producing 240 horsepower and 280 lb-ft of torque. All engines were paired with a 4T65E 4-speed automatic transmission. Many owners appreciate the LaCrosse for its smooth ride and quiet cabin, while some common complaints include issues with the electrical system and occasional powertrain problems.

Engine

3.8L Series III V6

• Intake Manifold Gasket Leak
  • Description/Symptoms: Engine misfires, coolant loss, overheating, and white smoke from the exhaust.
  • Solution: Replacing the intake manifold gasket.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Oil Leaks
  • Description/Symptoms: Oil spots under the vehicle, low oil level, burning oil smell. Often originates from valve cover gaskets or rear main seal.
  • Solution: Replacing the leaking gaskets or seals.
  • Estimated Cost to Fix: $150 - $400+ (depending on the location of the leak)
  • Recalls: None Found

3.6L DOHC V6

• Timing Chain Issues
  • Description/Symptoms: Engine rattle, especially on startup, check engine light with codes related to camshaft timing.
  • Solution: Replacing the timing chain, guides, and tensioners.
  • Estimated Cost to Fix: $800 - $1500+
  • Recalls: None Found

3.8L Supercharged V6

• Supercharger failure
  • Description/Symptoms: The supercharger may fail due to a seized bearing in the snout.
  • Solution: Rebuild or replace the supercharger.
  • Estimated Cost to Fix: $1,000 - $3,000
  • Recalls: None Found

Transmission

4T65E (All Engines)

• Harsh Shifting/Slipping
  • Description/Symptoms: Rough or delayed shifts between gears, transmission slipping, especially between 2nd and 3rd gear.
  • Solution: Replacing or rebuilding the transmission. In some cases, a valve body replacement might resolve the issue.
  • Estimated Cost to Fix: $500 - $3000+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering at low speeds, stalling, and transmission overheating.
  • Solution: Replacing the torque converter.
  • Estimated Cost to Fix: $500 - $1200+
  • Recalls: None Found

Suspension

• Strut/Shock Failure
  • Description/Symptoms: Bumpy ride, excessive bouncing, poor handling, and clunking noises.
  • Solution: Replacing worn struts and shocks.
  • Estimated Cost to Fix: $300 - $800+ (per axle)
  • Recalls: None Found
• Sway Bar Link Failure
  • Description/Symptoms: Clunking or rattling noises, especially when going over bumps or turning.
  • Solution: Replacing worn sway bar links.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found

Electrical

• Power Window Issues
  • Description/Symptoms: Power windows not working, working intermittently, or slow operation.
  • Solution: Replacing the window motor, regulator, or switch.
  • Estimated Cost to Fix: $150 - $400+ per window
  • Recalls: None Found
• Instrument Panel Issues
  • Description/Symptoms: Gauges not working properly, dimming, or complete failure of the instrument panel.
  • Solution: Repair or replacement of the instrument cluster.
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found
• Headlight Issues
  • Description/Symptoms: One or both headlights not working properly.
  • Solution: Replacing the headlight bulb.
  • Estimated Cost to Fix: $30 - $100+
  • Recalls: None Found

Exterior

• Door Handle Failure
  • Description/Symptoms: Outer door handle breaking, often due to plastic components becoming brittle.
  • Solution: Replacing the door handle assembly.
  • Estimated Cost to Fix: $100 - $300+ per door
  • Recalls: None Found
• Side Mirror failure
  • Description/Symptoms: Side mirror breaking
  • Solution: Replacing the side mirror assembly.
  • Estimated Cost to Fix: $100 - $300+ per mirror
  • Recalls: None Found

Interior

• Air Conditioning Issues
  • Description/Symptoms: Air conditioning not blowing cold air, weak airflow, or unusual noises from the AC compressor.
  • Solution: Recharge AC system, repair or replace compressor, condenser, or other AC components.
  • Estimated Cost to Fix: $200 - $1000+
  • Recalls: None Found
• Heater Issues
  • Description/Symptoms: Heater not blowing hot air.
  • Solution: Repair or replace heater core or blend door actuator
  • Estimated Cost to Fix: $200 - $1000+
  • Recalls: None Found

Summary

The 2007 Buick LaCrosse has some common issues, with the intake manifold leak on the 3.8L V6 and timing chain issues on the 3.6L V6 being potentially expensive repairs. Transmission issues are also prevalent across all engine options. The electrical system and suspension can also be prone to problems. Overall, potential buyers should be aware of these common issues and have the vehicle inspected before purchasing. While some repairs are relatively inexpensive, others can be costly.