Removal (3.4L & 3.8L)
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, 2003 Buick Regal, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Turn OFF the ignition. Remove the fuel injector sight shield. Note position of the spark plug wires before removing the wires. Twist the spark plug boot 1/2 turn before removing the boot. Pry the heat shield up from the spark plugs using the Spark Plug Boot Removal Tool (J 38491). Remove the spark plug wires from the spark plugs. Remove the spark plugs from the engine.