2011 BUICK LaCrosse LY7/LFW (GMX132)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing chain noise in early LY7 engines
• Throttle body sensor issues
• Fuel system contamination in direct injection models

First checks

• Inspect timing chain tension and noise
• Check for oil leaks near valve covers
• Fuel injector cleanliness

Avant de remplacer des pièces

• 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

• Engine and features may vary between North American and Chinese markets.
• eAssist mild hybrid version of 2.4L LFW engine offered in select trims in North America.
• Oil capacity includes filter change; exact quantities depend on engine variant and market.