GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Set the dome lamp to the DOOR position.
  2. Open and close the left front door.

The front dome lamps will remain on 15-20 seconds each time the door is closed.

The rear lamp will turn on and off each time the door is open and closed.

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2

Turn the dome lamp to the ON position and then back to the DOOR position.

The dome lamp lights, then goes out.

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3

  1. Turn the dome lamp to the OFF position.
  2. Open and Close the left front door.

The dome lamp does not light at all.

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4

Open and close the back door.

The rear compartment lamp lights when the back door is open. The lamp goes out when the back door is closed.

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* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.