2002 BUICK Park Avenue L37 (U-Body)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Intake manifold gasket leaks
• Transmission torque converter shudder
• Timing cover gasket leaks

First checks

• Inspect intake manifold and timing cover for oil leaks
• Check automatic transmission fluid condition and level
• Verify ignition system for misfires

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

• This profile focuses on the main North American market 2002 Buick Park Avenue with 3.8L V6 engine as this was the primary and widely documented version worldwide.
• Models produced for the Chinese market were mainly after 2005, so 2002 Park Avenue for global is North America dominant.