2008 CHEVROLET Impala LNF/LY7 (GMX191)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Intake manifold gasket leaks on 3.9L LY7 engine
• Transmission shifting concerns under heavy load

First checks

• Check for coolant leaks around thermostat housing
• Inspect timing chain noise 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

• Trim and engine availability varies primarily with North American market; some export versions may differ.
• No official global right-hand drive variant produced in 2008; sold in select left-hand drive global markets.