GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Data Link Connector Schematics

Connector End View Reference: Master Electrical Component List in Wiring Systems

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

  1. On the scan tool select Data Link Tests under Computer/Integrating Systems, and then Class 2 Power Mode.
  2. Close all the doors.
  3. Turn ON the ignition, with the engine OFF.
  4. Wait 5 seconds, then turn the ignition OFF.
  5. Wait approximately 10 minutes.

Did the scan tool display the RAP power mode and after 10 minutes the OFF-Awake power mode?

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

Go to Step 3

3

  1. With the scan tool observe the driver and passenger door ajar switches.
  2. Open and close each door.

Does the scan tool display change from Door Ajar to Door Closed?

Go to Step 4

Go to Symptoms - Doors in Doors

4

  1. With the scan tool observe the driver and passenger door open switches.
  2. Open and close each door.

Does the scan tool display change from Door Open to Door Closed?

Go to Step 5

Go to Symptoms - Doors in Doors

5

Replace the body control module (BCM). Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1