2009 CADILLAC CTS L77/LSJ (GMX322)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing chain tensioner noise in early L77 engines
• Water pump bearing wear
• Electrical issues with body control module
• Throttle body carbon buildup

First checks

• Inspect timing chain and tensioner for rattle
• Check coolant and oil leaks
• Verify transmission shift quality
• Check for diagnostic trouble codes

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

• CTS was primarily sold in North America in 2009, with limited exports to Europe and the Middle East.
• Diesel and hybrid variants were not offered in 2009.
• Simultaneous production of sedan and coupe body styles with some engine variations.
• Service-fill oil capacity includes filter change.