I want to change them, and any other ignition system items suitable for a do it yourselfer
This engine has coil on plug ignition. Ontop of each valve cover is an access plate with bolts you remove. After gaining access you will see the 4 seperate wires on each cylinder bank. At the end of each wire is the spark plug boot. Pull each one off one at a time while replacing the spark plugs. The wires themselves at the other end each have a seperate coil. I have not had to replace my wies and coils but did replace the sparkplugs at 100K miles.
The spark plugs in the v6 can become an involved job as the upper intake manifold. The LS uses a Coil on Plug (COP) ignition system, meaning that the spark plugs are located under the ignition coil
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