The theft deterrent system on this vehicle consists of
the following two separate systems:
|     •  | The Personal Automotive Security System (PASS-Key® II) | 
 
|     •  | The Content Theft Deterrent (CTD) System | 
 
These systems are described and diagnosed separately within this section.
The PASS-Key® II is designed to help prevent vehicle
theft. The PASS-Key® II disables the engine unless the driver uses a key
with a specific electrical       resistance in the ignition switch. The system
consists of the following     components:
|     •  | The steering column (ignition) lock cylinder | 
 
|     •  | The instrument cluster (SECURITY indicator) | 
 
|     •  | The PASS-Key® II theft deterrent module | 
 
|     •  | The Park/Neutral Position (PNP) switch | 
 
|     •  | The theft deterrent relay  | 
 
|     •  | The powertrain control module (PCM) | 
 
The Content Theft Deterrent (CTD) system is designed to provide a warning
in the event of a forced entry. The attempted forced entry may  come   through
  the doors. When a forced entry is attempted, the alarm warning  system 
 activates.   The warning system causes the following actions to occur:
|     •  | The horns sound intermittently. | 
 
|     •  | The exterior lights flash in unison for approximately three minutes. | 
 
The CTD system consists of the following components:
|     •  | The door lock actuator switches | 
 
|     •  | The door lock cylinder switches | 
 
|     •  | The door tamper switches (Buick) | 
 
|     •  | The instrument cluster (SECURITY indicator) | 
 
|     •  | The lamp control module (LCM) | 
 
|     •  | The rear compartment lid tamper switch | 
 
|     •  | The remote function actuator (RFA) module | 
 
The yellow SECURITY indicator in the instrument cluster is controlled
by both the following systems:
|     •  |  In the PASS-Key® II system, the theft deterrent module controls
the indicator only when the ignition switch is in RUN or START. | 
 
|     •  | In the CTD system, the remote function actuator (RFA) module controls
the indicator only when the ignition switch is OFF. | 
 
If the engine cranks but does not start, the PASS-Key® II system
is not causing the problem. The content theft deterrent system does not affect
      the engine starting.