Installation Procedure

Code the ignition lock cylinder, if necessary. Refer to Key and Lock Cylinder Coding in General Information.
Insert the key and turn the lock cylinder to the ON/RUN position.
Position the lock cylinder to the ignition switch. Press the cylinder into place. If you turned the key slightly while removing the lock cylinder, you may have to align the white colored ignition switch rotor (1) with the lock cylinder (2). You can rotate the ignition switch rotor (1) with your finger.

Fig 1: Ignition Switch Rotor & Lock Cylinder

Courtesy of GENERAL MOTORS CORP.

Turn the key to the OFF position and remove the key.
Install the I/P cluster trim plate. Refer to Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster (Impala) or Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster (Monte Carlo) .
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
If you installed a new lock cylinder, perform the BCM theft deterrent relearn procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.