GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Interior Lights Schematics

1

Did you review the Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

Verify that the dome lamps are inoperative.

Does the system operate normally?

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

Go to Step 3

3

Using a test lamp check the dome lamp connector from cavity 2 to ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 5

4

Replace the dome lamp assembly. Refer to Dome Lamp Replacement .

Is the repair complete?

Go to Step 8

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5

Inspect for an open in the dome lamp supply voltage circuit between the junction block and the dome lamp.

Is an open condition present?

Go to Step 6

Go to Step 7

6

Replace the junction block.

Is the repair complete?

Go to Step 8

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7

Repair the open in the dome lamp supply voltage circuit between the junction block and the dome lamp. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3