Pontiac Pontiac G6 2005-2010 3.5L V6 Engine Specifications

The 3.5L V6 engine from the 2005-2010 Pontiac G6 is compatible with several GM models, including the Chevrolet Malibu, Saturn Aura, and other vehicles sharing the GM Epsilon platform. It features a 3500 cc displacement, producing 217 horsepower and 217 lb-ft of torque. Ensure compatibility by verifying engine codes and mounting points before installation.

The 3.5L V6 engine requires regular maintenance for optimal performance. Change the oil and oil filter every 5,000-7,500 miles. Inspect and replace spark plugs every 30,000 miles. Check the timing belt every 60,000 miles and replace it as needed. Regularly inspect coolant levels, belts, and hoses to prevent overheating and ensure smooth operation.

To replace the 3.5L V6 engine, first disconnect the battery and drain fluids. Remove components like the intake manifold, exhaust system, and accessories. Disconnect wiring harnesses and hoses. Use an engine hoist to lift the old engine out. Install the new engine by reversing the steps, ensuring all connections are secure. Torque bolts to manufacturer specifications.

For engine misfires, check spark plugs, ignition coils, and fuel injectors. If the engine overheats, inspect the coolant system, thermostat, and water pump. Unusual noises may indicate timing belt or pulley issues. Use an OBD-II scanner to diagnose error codes and address issues promptly for optimal performance and longevity.

To optimize performance, use high-quality synthetic oil and premium fuel. Upgrade the air intake and exhaust systems for better airflow. Regularly clean fuel injectors and replace air filters. Consider a performance tune to enhance horsepower and torque. Maintain proper tire pressure and alignment to reduce engine strain and improve efficiency.