2006 BUICK Lucerne L27/L67 (GMX172)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Cooling system leaks
• Oil consumption in later production engines
• Timing chain tensioner noise on some engines

First checks

• Check for coolant leaks
• Inspect timing chain tensioner condition
• Verify condition of ignition coils and spark plugs

Antes de cambiar piezas

• 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 specs primarily applicable to North American market; some markets may not have sold the Lucerne in 2006.
• No manual transmission offered; all models have front-wheel drive.