2019 BUICK LaCrosse LAF (2.5L I4, North America)/LGX (3.6L V6, North America) (E2XX)
E2XX / Sedan / Primarily North America, with exports to China (different generation)
LAF (2.5L I4, North America)LGX (3.6L V6, North America)Exact year/trim recordGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Camshaft position sensor failure (V6)
- Coolant leaks around water pump
- Electronic throttle body issues causing hesitation
First checks
- Engine oil condition and level
- Transmission fluid level and clarity
- Brake fluid condition
- Timing chain noise on V6 engines
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 2019 LaCrosse was largely sold in North America; China received a different, locally produced generation as a distinct model.
- Engine options and availability depend on market; North America primarily used the LGX 3.6L V6 for premium trims.