1996 BUICK Century L46/L67 (GN)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Intake manifold leaks on 3.1L
• Supercharger belt wear on 3.8L L67
• Timing belt aging concerns

First checks

• Inspect timing belt condition and service history
• Check for coolant leaks at intake manifold gaskets
• Verify transmission fluid level and condition

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

• Buick Century 1996 was the last model year for the third generation GN platform in North America.
• The supercharged 3.8L L67 was mainly found in the Century Limited trim in North America; exact markets outside North America may vary with lesser documentation.