GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Inspect the dome lamp bulb filament.

Is the dome lamp bulb filament open?

Go to Step  4

Go to Step  2

2

Using a test lamp probe between the dome lamp connector terminal A and the ground.

Does the test lamp illuminate?

Go to Step  3

Go to Step 5

3

  1. Open any vehicle door.
  2. Turn the ignition switch to the RUN position.
  3. Using a test lamp probe between the dome lamp connector terminals A and B.

Does the test lamp illuminate?

Go to Step  6

Go to Step  7

4

Replace the dome lamp bulb.

Is the repair complete?

Go to Step  8

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5

  1. Inspect the dome lamp connector terminals and bulb terminals for a poor connection.
  2. Repair a poor connection or an open in circuit 240 between S391 and the dome lamp connector terminal A.

Is the repair complete?

Go to Step  8

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6

  1. Inspect the dome lamp bulb terminals for a poor connection.
  2. Make repairs as necessary.

Is the repair complete?

Go to Step  8

--

7

  1. Inspect the dome lamp connector terminals and bulb terminals for a poor connection.
  2. Repair a poor connection or an open in circuit 156.

Is the repair complete?

Go to Step  8

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8

  1. Turn the ignition switch to the LOCK position.
  2. Reconnect any of the connectors or components that were removed.

Have all repairs been made?

Go to Interior Lamps System Check

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