Installation Procedure

Fig 1: Identifying Theft Deterrent Exciter Module

GM639144

Courtesy of GENERAL MOTORS CORP.

Slide the theft deterrent module (3) onto the ignition lock cylinder housing. Verify that the retainers (1,2) are engaged.
Install the ignition switch lock cylinder. Refer to Ignition Switch Lock Cylinder Replacement in Instrument Panel, Gages, and Console.