GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Sunfire 🢒 Body and Accessories 🢒 Data Link Communications 🢒 Symptoms

Important: 

  1. Perform Diagnostic System Check - Theft Deterrent before using the Symptom Tables in order to verify that all of the following are true:
    2.    • There are no DTCs set.
       • The control module(s) can communicate via the serial data link.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
    3.    •  Content Theft Deterrent (CTD) Description
       •  Content Theft Deterrent (CTD) Operation

Visual/Physical Inspection
    • Inspect for aftermarket devices which could affect the operation of the Theft Deterrent System. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • Inspect the ignition switch for obvious damage.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose a symptom that does not set a DTC:

    •  Content Theft Deterrent (CTD) Alarm Mode Inoperative
    •  SECURITY Indicator Inoperative