GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 Vehicle Theft Deterrent (VTD) System Check

Step

Action

Normal Results

Abnormal Results

1
    • Observe the SECURITY indicator.
    • Turn the ignition switch to the RUN position.
    • For automatic transmissions, shift the transmission into the PARK position.
    • For manual transmissions, depress the clutch pedal in order to close the clutch start switch.
    • Turn the ignition switch to the START position.
    • Turn the ignition switch to the OFF position.
    • The SECURITY indicator illuminates for approximately 5 seconds, then turns OFF.
    • The engine starts.
    • The engine stops.
    • The SECURITY indicator illuminates and stays on. The engine does not crank. Refer to Ignition Lock Cylinder Test .

2
  1. Disconnect the key lock cylinder connector at the base of the steering column.
  2. Connect the male and the female parts to the mating connectors on the pigtails from the J 35628 interrogator or equivalent.
  3. Insert the ignition key into the key code reader on the J 35628 interrogator.
  4. Press the On-Off rocker switch to the ON position.
  5. A number from 1-15 will appear on the display of the interrogator. This indicates the electrical code of the key. The letter E indicates an error.
  6. Set the key code selector on the J 35628 interrogator to a code which is different from the code read on the key code reader display.
  7. Turn the ignition switch to the START position.

The vehicle does not crank. The SECURITY indicator is illuminated.

3

Complete the following steps within the 3 minute Tamper Mode time out:

  1. Turn the ignition switch to the OFF position.
  2. Disconnect and remove the J 35628 interrogator.
  3. Reconnect the connectors at the base of the steering column.
  4. Turn the ignition switch to the START position.

The vehicle does not crank. The SECURITY indicator is illuminated.

4
  1. Turn the ignition switch to the OFF position.
  2. Wait 3-4 minutes.
  3. Observe the SECURITY indicator.
  4. When the indicator is OFF, use the customer's key in order to turn the ignition switch to the START position.
  1. The SECURITY indicator tuns off.
  2. The engine starts.