How do you change spark plugs on 3.4 motor in 2004 Chevrolet impala?

To change the spark plugs on a 2004 Chevrolet Impala with a 3.4L motor, first ensure the engine is cool and disconnect the negative battery terminal. Remove the ignition coil by unbolting it and disconnecting the electrical connector. Then, carefully pull the spark plug wires off the spark plugs and use a spark plug socket to remove the old plugs. Install the new spark plugs with the correct torque, reattach the wires and ignition coil, and reconnect the battery terminal.