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Removal Procedure

Turn OFF the ignition switch.

Fig 1: View Of Ignition Coil Module And Module Mounting Bracket

Courtesy of GENERAL MOTORS CORP.

Note order and disconnect the spark plug wires from the coil assemblies.
Remove the screws (1) securing the coil assemblies to the ignition control module (ICM).
Remove the coils (2) from the ICM (3).