What is the coil pack firing order on a 99 Pontiac grand am 3.4?
The firing order for a 1999 Pontiac Grand Am 3.4L V6 is 1-6-5-4-3-2. Keep in mind that the coil packs fire in pairs, so the order of the coil pack firing would effectively be 1&6, then 5&4, then 3&2.