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Where are the spark plugs on a 2006 Chevy Cobalt LS?

The spark plugs on a 2006 Chevy Cobalt LS (assuming the 2.2L Ecotec engine) are located on the top of the engine, under a plastic engine cover. You'll need to remove the cover to access them. They're arranged in a V-shape, with one plug per cylinder. There are four cylinders total in this engine. Consult a repair manual or online diagrams specific to the 2.2L Ecotec engine in a 2006 Chevy Cobalt for precise location within that V-shape.