2010 Buick Lucerne

The 2010 Buick Lucerne is a full-size sedan known for its comfortable ride and spacious interior. It offered three engine options: a 3.9L V6 (169 hp and 237 lb-ft of torque), a 3.8L V6 (197 hp and 227 lb-ft of torque), and a 4.6L Northstar V8 (292 hp and 288 lb-ft of torque). All engines were paired with a 4-speed automatic transmission. People often praise the Lucerne for its smooth ride, quiet cabin, and straightforward controls. Common criticisms include its somewhat bland styling, dated transmission, and less-than-stellar fuel economy.

Engine

3.9L V6

• Intake Manifold Gasket Failure
  • Description/Symptoms: Engine may run rough, misfire, or have a vacuum leak. Coolant loss may be observed. Check engine light may illuminate.
  • Solution: Replace the intake manifold gasket.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

3.8L V6

• No Issues Found

4.6L Northstar V8

• Oil Leaks
  • Description/Symptoms: Oil leaks from various locations on the engine, particularly around the valve covers and oil pan. Burning oil smell.
  • Solution: Replace the leaking gaskets and seals.
  • Estimated Cost to Fix: $200 - $800+ depending on the location of the leak.
  • Recalls: None Found
• Coolant Leaks (Head Gasket)
  • Description/Symptoms: Overheating, coolant loss, white smoke from the exhaust, engine misfires, or milky oil. Can be more common in higher mileage vehicles.
  • Solution: Head gasket replacement. This repair is complex and often involves machining the cylinder head.
  • Estimated Cost to Fix: $2000 - $4000+
  • Recalls: None Found

Transmission

4T65E 4-Speed Automatic (All Engines)

• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, especially at lower speeds. Transmission slipping or failing to shift properly. Check engine light may illuminate.
  • Solution: Replace the torque converter. It is often recommended to also flush the transmission fluid and inspect for debris.
  • Estimated Cost to Fix: $800 - $1500+
  • Recalls: None Found
• Hard or Delayed Shifting
  • Description/Symptoms: Harsh shifts between gears, delays in shifting, or failure to shift. Can be caused by worn valve body components or low transmission fluid.
  • Solution: Perform a transmission fluid flush and filter change. If the problem persists, the valve body may need to be rebuilt or replaced.
  • Estimated Cost to Fix: $200 - $1200+ depending on the extent of the repair.
  • Recalls: None Found

Suspension

• Strut Mount Failure
  • Description/Symptoms: Clunking or rattling noises from the front or rear suspension, especially when going over bumps. Poor handling and uneven tire wear.
  • Solution: Replace the strut mounts. It is often recommended to replace the struts and shocks at the same time.
  • Estimated Cost to Fix: $300 - $800+ per axle.
  • Recalls: None Found
• Rear Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: The rear of the vehicle sagging, especially when parked. The air compressor running constantly or not at all.
  • Solution: Replace the air suspension compressor.
  • Estimated Cost to Fix: $400 - $1000+
  • Recalls: None Found

Electrical

• Power Window Regulator Failure
  • Description/Symptoms: Power windows not operating, moving slowly, or making grinding noises.
  • Solution: Replace the power window regulator.
  • Estimated Cost to Fix: $200 - $400+ per window.
  • Recalls: None Found
• Door Lock Actuator Failure
  • Description/Symptoms: Door locks not working properly, either failing to lock or unlock.
  • Solution: Replace the door lock actuator.
  • Estimated Cost to Fix: $150 - $350+ per door.
  • Recalls: None Found
• Key Stuck in Ignition
  • Description/Symptoms: Key is unable to be removed from the ignition switch. This can be caused by a faulty shifter interlock solenoid or a worn ignition cylinder.
  • Solution: Diagnose and replace the faulty component.
  • Estimated Cost to Fix: $100 - $500+ depending on the cause.
  • Recalls: None Found

Exterior

• Headlight Condensation
  • Description/Symptoms: Moisture buildup inside the headlight housings, reducing visibility.
  • Solution: Remove the headlight assembly and dry it out, reseal the housing, or replace the headlight assembly.
  • Estimated Cost to Fix: $50 - $400+ depending on the chosen solution.
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof not opening or closing properly, getting stuck, or making excessive noise.
  • Solution: Diagnose and repair the sunroof mechanism, which may involve lubricating the tracks, replacing the motor, or replacing the entire assembly.
  • Estimated Cost to Fix: $200 - $800+ depending on the issue.
  • Recalls: None Found

Summary

The 2010 Buick Lucerne, while generally reliable, has a few common issues that potential buyers should be aware of. The engine issues, particularly those associated with the Northstar V8, can be costly to repair. Transmission issues, due to the older 4-speed automatic, are also prevalent. Suspension and electrical problems are also common and can affect ride quality and functionality. Depending on the specific issue, repair costs can range from a few hundred dollars to several thousand, especially for major engine or transmission work. Buyers should have the vehicle inspected by a qualified mechanic before purchasing to identify any potential problems and negotiate a fair price.