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Where are the spark plugs on a 1991 Pontiac grand am 2.5L?

The spark plugs on a 1991 Pontiac Grand Am with the 2.5L engine are located on top of the engine, under a plastic cover. To access them, you'll need to remove that cover. They are arranged in a V-shaped configuration following the cylinder head layout. You'll likely need a socket and ratchet to remove them. Be sure to consult a repair manual or online diagrams specific to that year and engine for precise locations and torque specifications when reinstalling.