Where is coil pack on 1999 Oldsmobile silhouette?

On a 1999 Oldsmobile Silhouette (which uses a 3.4L V6 engine), the coil packs are located on top of the engine, directly over the spark plugs. They're not a single unit, but rather individual coil packs for each cylinder, mounted directly onto the spark plug tubes. To find them, look for several smallish black rectangular units sitting on the valve cover.