GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Is the vehicle equipped with content theft deterrent (RPO UA6)?

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Go to Step 2

Go to Step 3

2

  1. Lower the driver's window (to prevent lockout).
  2. Remove key from the ignition switch.
  3. Close and lock all vehicle doors.
  4. Insert key into either key lock cylinder.
  5. While observing the door locks, rotate door key cylinder and unlock door.

Did door locks unlock?

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Go to Step 3

Go to Automatic Door Locks Inoperative

3

  1. Turn the ignition switch from the LOCK to the RUN position.
  2. Close all vehicle doors.
  3. While observing the door locks, press lock then unlock on either door lock switch.

Did door locks lock, then unlock?

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Go to Step 4

Go to Automatic Door Locks Inoperative

4

  1. Turn off the IP dimmer switch.
  2. Turn the ignition switch to the LOCK position.
  3. Remove the BCM PRGRM fuse.
  4. Turn the ignition switch to the ACC position.
  5. • The BCM sounds the chime a number of times equivalent to the BCM type installed on the vehicle (1, 2, 3, or 4 chimes).
    • Now the BCM has entered the feature customization mode.
  6. To change the automatic door lock operation mode, press and release the LOCK on either door lock switch. The BCM sounds the chime a number of times equivalent to the automatic door lock operation mode. A transition past mode 4 repeats the sequence starting with mode 1. Refer to Automatic Door Lock Feature Customization for detailed mode information.
  7. To change the locking control mode, press and release the UNLOCK on either door lock switch. The BCM sounds the chime a number of times equivalent to the locking control mode. A transition past mode 4 repeats the sequence starting with mode 1. Refer to Automatic Door Lock Feature Customization for detail mode operation.

Does the BCM change modes as described?

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Go to Step 5

Go to Step 6

5

  1. Turn the ignition switch to the LOCK position.
  2. Reinstall the BCM PRGRM fuse.

This action causes the BCM to exit and save the current customization modes. Is the action complete?

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System OK

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6

Refer to the Diagnostic System Check - Body Control System in Body Control System for further diagnostics and repair of the BCM.

Is the action complete?

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System OK

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