What is the firing order for a 1990 Chevy Lumina 3.1L?

standing looking at the engine with the water pump nearest you. left side: 1 - 3 - 5 right side: 2 - 4 - 6 Firing Order: 1 - 2 - 3 - 4 - 5 - 6 ( taken from "Haynes Auto Repair Book)

Distributor Rotation: Clockwise

#1 is to the front center. This can be located by lookin at the hold-done cap screws, #1 is right next to the hold-down cap screw facing the #5 spark-plug.