Firing order is 1-2-3-4-5-6. Are you sure it has a distributor? Provide the year.
I just want to see a picture of the chevy lumina pushrod
your firing order is 165432
It is located in the fuel tank. Unless there is an access panel in the trunk or under the rear seat, the tank must be removed in order to install the pump.
When troubleshooting problems within an engine, it can help to know the firing order. The firing order of a 1991 Chevy Lumina 3.1L is 1-2-3-4-5-6.