GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Results

Abnormal Results

1

The following steps verify the BCM type:

  1. Remove the MALL PGM fuse in the fuse block.
  2. Turn the ignition switch to the ACC position.
    • The seat belt indicator flashes.
    • The chime sounds 4 times.
    • These actions indicate that the Body Control Module (BCM) type 4 is installed in the vehicle.
    • The seat belt indicator does not flash.
    • The chime does not sound 4 times.
    • This indicates that the vehicle has an incorrect BCM installed.

2

The following steps set the correct feature customization mode and enable the content theft deterrent system:

  1. Verify that the MALL PGM fuse is removed and that the ignition switch is in the ACC position.
  2. Set the content theft deterrent/shock sensor control to mode 4:
  3. • Turn the headlamp switch from the OFF position to PARK position, and back to the OFF position.
    • This action advances the mode number.
    • The seat belt indicator flashes and the chime sounds a number of times which is equal to the current customization mode number.
       • Set the theft deterrent arm/disarm control to mode 3:
       • Insert the key in any door lock cylinder.
       • Rotate the key from the center position to the unlock position.
       • Rotate the key back to the center position. This will advance the mode number.
    • Turn the ignition switch to the OFF position.
    • Reinstall the MALL PGM fuse.
  1. The seat belt indicator flashes 4 times.
  2. The chime sounds 4 times.

    These actions indicate that the content theft deterrent/shock sensor control mode 4 is set.

  3. The seat belt indicator flashes 3 times.
  4. The chime sounds 3 times.

    This indicates that the theft deterrent arm/disarm control mode 3 is set.

Theft Deterrent System Feature Customization Inoperative

3

Arm the system (1 of 2):

  1. Turn the ignition switch to the OFF position.
  2. Remove the key from the ignition lock cylinder.
  3. Open the driver's door and press LOCK on either power door lock switch.
  4. Close all of the doors and the rear compartment lid.
    • The security indicator lamp flashes while the driver door is open.
    • The lamp turns on steadily when the following conditions exist:
      • All of the doors are closed.
      • The content theft deterrent system enters the arming mode.
    • The lamp flashes continuously at a slow rate when the content theft deterrent system is armed.

4

Arm the system (2 of 2) by performing the following procedure:

  1. Press unlock on the keyless entry transmitter.
  2. Press the lock on the keyless entry transmitter.

The lamp flashes continuously at a slow rate when the content theft deterrent system is armed.

5

Disarm the system (1 of 2):

  1. Insert the key into the key lock cylinder of either door. Unlock the door.
  2. Open the driver's door.

The system disarms.

SECURITY Indicator Inoperative

6

Disarm the system (2 of 2):

  1. Close all of the doors.
  2. Press LOCK on the keyless entry transmitter.
  3. Wait for 10 seconds.
  4. Press unlock on the keyless entry transmitter.

The system disarms.

Content Theft Deterrent (CTD) Alarm Mode Always On

7

Set off the alarm (1 of 3):

  1. Lower all of the vehicle windows.
  2. Remove the key from the ignition key lock cylinder.
  3. Close all of the doors.
  4. Press the lock on the keyless entry transmitter.
  5. Reach through the driver's window opening and unlock the door manually.
  6. Open the driver's door.
  7. Stop the alarm by pressing UNLOCK on the keyless entry transmitter.
    • The content theft deterrent system sets off the alarm when opening the driver's door.
    • During the alarm mode, the content theft deterrent system alternates between the headlamp flashing and sounds the horn for 2 minutes.
    • The security indicator lamp turns on steadily.

8

Set off the alarm (2 of 3):

  1. Close all the doors.
  2. Press the lock on the keyless entry transmitter.
  3. Reach through any passenger window opening.
  4. Unlock the door manually.
  5. Open the unlocked door.
  6. Stop the alarm by pressing unlock on the keyless entry transmitter.
    • The content theft deterrent system sets off the alarm when you open any vehicle door.
    • During the alarm mode, the content theft deterrent system alternates between the headlamp flashing and sounds the horn for 2 minutes.
    • The security indicator lamp turns on steadily.

9

Set off the alarm (3 of 3):

  1. Close all of the doors.
  2. Press LOCK on the keyless entry transmitter.
  3. Reach through the driver's window opening.
  4. Turn the ignition switch to the RUN position.
  5. Stop the alarm by pressing UNLOCK on the keyless entry transmitter.
    • The content theft deterrent system sets off the alarm when you turn the ignition switch to the RUN position.
    • During the alarm mode, the content theft deterrent system alternates between the headlamp flashing and sounds the horn for 2 minutes.
    • The security indicator lamp turns on steadily.

10

Set off the warning mode:

  1. Close all of the doors.
  2. Press LOCK on the keyless entry transmitter.
  3. Wait for 10 seconds.
  4. Simulate a small vehicle impact. Choose an area of the vehicle such as the bumpers in order to avoid body damage.
    • The content theft deterrent system alternates between 5 headlamp flashes and sounds the horn. This is dependent on the sensitivity level of the shock sensor and the magnitude of the impact to the vehicle.
    • The security indicator lamp turns on.

Shock Sensor Inoperative

11

Activate engine fuel enable control (1 of 2):

  1. Remove the key from the ignition switch.
  2. Close all of the vehicle doors.

  3. Press LOCK on the keyless entry transmitter.
  4. Reach through the driver's window opening. Unlock the door manually.
  5. Open the driver's door.
  6. Start the engine.
    • When you turn the ignition switch to the CRANK position, the engine cranks but won't start.
    • The security indicator lamp turns on.
    • When you open the driver's door, the alarm sounds.
    • To stop the alarm, turn the ignition switch to the OFF position.
    • Press unlock on the keyless entry transmitter.

SECURITY Indicator On, Engine Starts

12

Activate engine fuel enable control (2 of 2):

  1. Press UNLOCK on the keyless entry transmitter.
  2. Start the engine.

The engine starts.

SECURITY Indicator Off, Engine Does Not Crank