2015 BUICK LaCrosse LFW/LFV (GMX271)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing chain wear (in rare cases on 3.6L V6)
• Ignition coil failures
• Evaporative emissions system leaks

First checks

• Check oil level and condition regularly
• Inspect ignition coils and plugs for wear
• Watch for coolant leaks especially near radiator and hoses

Before replacing parts

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• The 2015 LaCrosse was available in multiple markets but mainly sold in North America and China with localized engine and trim variations
• The 3.6L V6 LFV engine is the dominant powertrain in North America, while China versions may still include the 2.4L Ecotec I4 LFW