Where are the spark plugs located on a 1998 Chevy Malibu?

The spark plugs on a 1998 Chevy Malibu are located on the top of the engine, under the valve cover. Since the 1998 Malibu likely has a V6 engine, you'll find six spark plugs, three on each side of the engine block, under their respective valve covers. You'll need to remove the valve covers to access them.