How do I change spark plugs on a 2000 4 cylinder alero?

where are the spark plugs on a 2000 oldmobile alero?How do I change spark plugs on a 2000 4 cylinder alero?check in the top of the valve cover , pull the boots off and look down inside. do not remove valve cover it is not needed. need a long extention to reachHow do I change spark plugs on a 2000 4 cylinder alero?it most be the quad-4. they're under the cover that should read 2.4L. that cover is your wires! not the valve cover ther're under there.