2015 Buick LaCrosse

The 2015 Buick LaCrosse is a full-size sedan that offers a comfortable ride and a spacious interior. Available engine options include a 2.4L inline-4 with eAssist (mild hybrid system) producing 182 horsepower and 172 lb-ft of torque, and a 3.6L V6 engine producing 304 horsepower and 264 lb-ft of torque. Both engines are paired with a 6-speed automatic transmission. Owners often praise the LaCrosse for its quiet cabin, smooth ride, and ample trunk space. Common complaints include the sometimes-unresponsive infotainment system and average fuel economy for the V6.

Engine

2.4L Inline-4 with eAssist

• Excessive Oil Consumption
  • Description/Symptoms: The engine consumes an excessive amount of oil between oil changes. This can lead to low oil levels and potential engine damage if not monitored.
  • Solution: Some owners have had success with replacing the PCV valve or performing an engine flush. More severe cases may require piston ring replacement.
  • Estimated Cost to Fix: $100 - $3,000+
  • Recalls: None Found

3.6L V6

• Timing Chain Wear/Failure
  • Description/Symptoms: A rattling noise, especially upon startup, accompanied by a check engine light. Diagnostic codes related to timing correlation issues (e.g., P0008, P0016).
  • Solution: Replacement of the timing chain, guides, tensioners, and possibly camshaft actuators.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found
• High Pressure Fuel Pump Failure
  • Description/Symptoms: The vehicle experiences hard starts, rough idling, reduced power and acceleration. Check engine light turns on.
  • Solution: Replacement of the High Pressure Fuel Pump.
  • Estimated Cost to Fix: $500 - $1,200+
  • Recalls: None Found

Transmission

6-Speed Automatic (Both Engine Options)

• Harsh Shifting/Slipping
  • Description/Symptoms: Transmission shifts harshly, slips between gears, or hesitates when accelerating.
  • Solution: Some owners have had success with a transmission fluid flush and fill. More severe cases may require valve body repair or replacement, or a complete transmission rebuild.
  • Estimated Cost to Fix: $200 - $4,000+
  • Recalls: None Found

Suspension

• Strut/Shock Absorber Failure
  • Description/Symptoms: Bouncing, poor handling, excessive noise from the suspension, especially over bumps.
  • Solution: Replacement of the struts and/or shock absorbers.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The MyLink infotainment system freezes, becomes unresponsive, or crashes, requiring a restart.
  • Solution: Software updates from the dealership can sometimes resolve the issue. In some cases, the infotainment unit may need to be replaced.
  • Estimated Cost to Fix: $0 (Software Update) - $1,200+
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The vehicle’s battery drains quickly, especially when the car is not in use.
  • Solution: Diagnose and repair parasitic draws (e.g., faulty modules, aftermarket accessories). Replacing the battery is sometimes necessary.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• Headlight Condensation
  • Description/Symptoms: Moisture accumulates inside the headlight housing, reducing visibility.
  • Solution: Replacing the headlight assembly or attempting to reseal the existing one.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: The sunroof may leak, fail to open or close properly, or make excessive noise.
  • Solution: Repair or replacement of the sunroof motor, tracks, or seals.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Summary

The 2015 Buick LaCrosse has a range of potential issues, from moderate problems with the infotainment system and suspension components to more severe issues with the engine and transmission, especially in high-mileage examples. The cost of repairs can vary widely depending on the specific problem, but engine and transmission work can be particularly expensive. Potential buyers should be aware of these common problems and have the vehicle thoroughly inspected before purchase.