GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the power door locks lockout feature is inoperative.

Does the power door locks lockout feature operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Are the power door locks inoperative?

Go to Symptoms - Vehicle Access

Go to Step 4

4

  1. Close all the doors.
  2. Open and close each door while observing the courtesy lamps.

Did the courtesy lamps illuminate for each door tested?

Go to Step 5

Go to Courtesy Lamps Inoperative

5

  1. Insert the ignition key fully into the ignition cylinder.
  2. Open the driver door.

Does the chime activate?

Go to Step 6

Go to Chime Malfunction

6

Replace the body control module (BCM).

Did you complete the replacement?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 3