GM Service Manual Online
For 1990-2009 cars only

To arm and disarm the content theft-deterrent system, if equipped, the system must be turned on by using Mode 2 listed previously in this section under Content Theft-Deterrent System .

With the arming and disarming feature, you can do the following:

    • Arm the system when you lock the doors using either power door lock switch while any door is open and the key is removed from the ignition.
    • Arm the system when you lock the doors with your remote keyless entry transmitter and the key is removed form the ignition.
    • Disarm the system when you unlock the doors with your key or remote keyless entry transmitter.

Programmable Modes

Mode 1: Power Door Lock Switch Arming Off

    • The content theft-deterrent system will arm when you lock the doors with the remote keyless entry transmitter. The key must be removed from the ignition when you lock the doors or the content theft-deterrent system will not arm.
    • The content theft-deterrent system will disarm when you unlock the doors with the keys or the remote keyless entry transmitter.
Mode 2: Remote Keyless Entry Transmitter Arm/Disarm Only

    • The content theft-deterrent system will arm when you lock the doors with the remote keyless entry transmitter. The key must be removed from the ignition when you lock the doors or the content theft-deterrent system will not arm.
    • The content theft-deterrent system will disarm when you unlock the doors with the remote keyless entry transmitter.

While this mode provides increased security, it can be a problem if the remote keyless entry transmitter is damaged, lost or if it fails to operate for any reason while the content theft-deterrent system is armed. The content theft-deterrent system must be disarmed for the engine to run and while in Mode 2, the key can no longer disarm the system.

If your vehicle is equipped with the OnStar® system, OnStar® will not be able to remotely unlock your vehicle if it has been programmed to Mode 2.

Mode 3: Standard Arming and Disarming

    • The content theft-deterrent system will arm when you lock the doors using either power door lock switch while any door is open and the key is removed from the ignition.
    • The content theft-deterrent system will arm when you lock the doors with your remote keyless entry transmitter. The key must be removed from the ignition when you lock the doors or the content theft-deterrent system will not arm.
    • The content theft-deterrent system will disarm when you unlock the doors with the key or the remote keyless entry transmitter.

Before your vehicle was shipped from the factory, it was programmed to Mode 1. The mode to which your vehicle was programmed may have been changed since it left the factory. To determine the mode to which your vehicle is programmed or to program your vehicle to a different mode, do the following:

  1. Follow the instructions for Entering Programming Mode .
  2. Insert a second ignition key fully into any door key cylinder and turn it to the unlock position.
  3. This step is necessary to prevent accidental programming of this feature to Mode 2. Do not program this feature to Mode 2 without first reading the note contained in the description for that mode. The door key lock cylinder must remain in the unlock position during Steps 2 through 4.

  4. Press the horn symbol on the remote keyless entry transmitter.
  5. Count the number of chimes you hear. The number of chimes tells you which mode the vehicle is set for. If you do not wish to change the current mode, you can either exit the programming mode by following the instructions later in this section or program the next feature available on your vehicle.
  6. Press the horn symbol on the remote keyless entry transmitter again to change the current mode.
  7. Repeat Step 5 until you hear the number of chimes that matches the mode you want.
  8. Remove the key from the door key cylinder.

The mode you selected is now set. You can either exit the programming mode by following the instructions at the end of this section or program the next feature available on your vehicle. See "Exit Programming Mode" following.