2007 CHEVROLET Impala LZ4/LLT (GM W)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Fuel pump relay issues causing no start
• Ignition coil pack failures
• Rear suspension wear on higher mileage examples

First checks

• Inspect ignition system and fuel pump relay
• Check for oil leaks around timing cover
• Verify condition of rear suspension bushings

Antes de cambiar piezas

• 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 2007 Impala was primarily sold in North America; export outside NA was limited and rare.
• The LLT engine was found mostly in higher-end trims or later 2007 production months.
• The oil capacity includes filter change to reflect full service fill.