GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: Use this diagnostic procedure in order to diagnose the anti-lockout feature only if the other functions of the door lock system are operating properly.

1

Did you perform the Power Door Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

Verify that the power door locks lockout is inoperative.

Does the lockout operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Insert the key in the ignition switch cylinder. Do not move the ignition switch from the OFF position.
  2. Open the driver's door.

Does the key-in ignition chime operate?

--

Go to Step 4

Go to Symptoms - Audible Warnings in Instrument Panel, Gauges and Console

4

Replace the BCM. Refer to Body Control Module Replacement in body control systems.

Is the repair complete?

--

Go to Step 5

--

5

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3