2002 CHEVROLET Impala LS1/3.8L L36 V6 (GM W-body)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Intake manifold gasket leaks (3.4L and 3.8L V6)
• Transmission 4T65-E shift solenoid issues
• Ignition coil failures

First checks

• Inspect intake manifold gasket for leaks
• Check transmission fluid condition and level
• Verify ignition coil functionality

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

• 2002 marked the transition where the 3.4L V6 was phased out, so some early production models have it, but most 2002 Impalas had the 3.8L L36 or L67 engines.
• The Impala was primarily sold in the North American market; export markets commonly had different engine availability or were limited.