GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Savana 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 Symptoms

Symptoms Export

Important: 

  1. Perform the 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 {XXX}.

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.

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 the symptom:

    • {XXX} Will include Link
    • {XXX} Will include Link
    • {XXX} Will include Link
    • {XXX} Will include Link

Symptoms Domestic

Important Preliminary Checks Before Starting
  1. Perform the 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 Vehicle Theft Deterrent (VTD) Operation .

Visual/Physical Inspection
    • Inspect for aftermarket devices which could affect the operation of the horn 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.

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 the symptom:

    • Engine Starts and Stalls Immediately, refer to DTC B2958 Security System Sensor Data Circuit High
    • Security Indicator Always ON, refer to SECURITY Indicator Always On or Flashing
    • Security Indicator Inoperative, refer to SECURITY Indicator Inoperative