2009 BUICK LaCrosse LX9/LZ4 (GMX190)
GMX190 / Sedan / North America / China (2009 model year, noted market differences)
LX9LZ4Fiche exacte année/versionGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Intake manifold gasket leaks
- Fuel pump recall issues in some early model years
- Dashboard peeling/delamination
First checks
- Check for intake manifold leaks and coolant loss
- Inspect automatic transmission fluid condition and level
- Evaluate condition of suspension components (common wear items)
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
- Chinese market 2009 LaCrosse often used the 3.0L LZ4 engine exclusively.
- North American 2009 LaCrosse was last year of first generation before 2010 redesigned model.