The spark plugs on a 2001 Oldsmobile Intrigue (which used a 3.4L V6 engine) are located on
the top of the engine, under a plastic engine cover. To access them, you'll need to remove the engine cover. They're arranged in a V-formation, one plug per cylinder, with the spark plug wires leading to them.
Be sure to consult a repair manual specific to your 2001 Oldsmobile Intrigue for precise location and detailed instructions. Improper removal or installation can damage the spark plugs or engine components.
