2021 CADILLAC CT4 LSY/LGW (1GYFZCR41MF000000)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Minor turbo lag on 2.0L engine reported
• Coolant leaks rare but reported on older production batches

First checks

• Inspect turbocharger operation
• Check oil level and consumption after break-in period
• Verify software updates applied

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

• 2.0L LSY engine standard on base trims in North America, 2.7L LGW used on sportier trims like CT4-V
• Market variation exists: some regions receive only the 2.0L engine
• Oil capacity stated includes filter change; exact capacity depends on engine and oil filter used