Spark Plug Wires: Removal
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the spark plug wires at each spark plug. Twist each spark plug boot 1/2 turn. Pull only on the boot in order to remove the wire from each spark plug. Disconnect the spark plug wires from the ignition coil. Twist each spark plug boot 1/2 turn. Pull only on the boot in order to remove the wires from the ignition coil.