I'm not sure if the Northstar has it anywhere. Just for your info though, the firing order is as follows:
1-2-7-3-4-5-6-8
Fig. 4.6L (VIN 9 and Y) Engines
Firing order: 1- 2- 7- 3- 4- 5- 6- 8
Distributorless ignition system
Hope helped (remember rated this help) Good luck.
Firing order cadillac deville 2003 4.6
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