On a 1999 Pontiac Grand Am, the coil pack is typically located
on top of the engine, directly above the spark plugs. It's usually a single unit with multiple coils, one for each cylinder. You'll likely find it towards the
center or rear of the engine, but the precise location might vary slightly depending on the engine (3.1L V6 or 3.4L V6).
To be certain, I recommend checking a repair manual specific to your 1999 Pontiac Grand Am's engine size. A diagram will show you exactly where it is located. You can find these manuals online or at auto parts stores.
