2002 CADILLAC Deville L37 (XV20)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Northstar head gasket leaks over time
• Timing chain tensioner wear
• Oil leaks from cam cover gaskets

First checks

• Inspect coolant system for leaks and proper level
• Check timing chain tension and noise
• Verify transmission fluid condition and level

Vor dem Teiletausch

• 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 2002 DeVille used the 4.6L Northstar V8 L37 exclusively in North America.
• Some export markets may have variations but primarily sold with this engine and automatic.
• Oil capacity includes filter change to be considered for service fills.