GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Interior Lights Schematics

Connector End View Reference: Lighting Systems Connector End Viewsor Data Communication Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Ensure that all doors are closed and the interior courtesy lamps turn off.

Do the exterior courtesy lamps remain illuminated?

Go to Testing for Electrical Intermittents

Go to Step 3

3

Test the door exterior courtesy lamp ground circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs.

Did you find and correct the condition?

Go to Step 6

Go to Step 4

4

Inspect for poor connections at the harness connector of the driver door module (DDM) or passenger door module (PDM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Replace the DDM or PDM. Refer to Control Module References.

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 3