Ignition Cable: Locations

GM does not provide ignition coil numbering for ignition cable orientation. You must use wire color at the ignition coil to determine ignition cable orientation.

Refer to Ignition Controls wiring diagram. Engine Controls Diagram 4

Ignition control for cylinders 1 and 4 has pink and orange wires to the ignition coil.

Ignition control for cylinders 2 and 3 has pink and white wires to the ignition coil.