Where is coil pack for 1999 grand am?

The coil pack on a 1999 Pontiac Grand Am is located on top of the engine, directly above the spark plugs. It's a single unit with individual coils for each cylinder, rather than individual coil packs per cylinder. To be precise, it's usually towards the rear (firewall side) of the engine. You'll need to look directly down on top of the engine to see it; it's relatively easy to spot.