1

Press the UNLOCK button on the keyless entry transmitter.

The courtesy lamps light for approximately 40 seconds.

Courtesy Lamps Inoperative

2

With all of the doors closed, move the interior lamp switch to the ON position.

The courtesy lamps light.

Courtesy or Reading Lamps Inoperative with Lamp Switch

3

Open and close each door one at a time.

The courtesy lamps light for approximately 25 seconds and fade out each time.

4

1. Close all of the doors.
2. Turn the ignition switch to the RUN position.
3. Turn the ignition switch to the OFF position.
4. Remove the key from the ignition.

The courtesy lamps light for approximately 25 seconds and then fade.

Courtesy Lamps Always On

5

Open the instrument panel (IP) compartment.

The IP compartment lamp lights.

Instrument Panel Compartment Lamp Inoperative

6

Open the rear compartment lid.

The rear compartment lamp lights.

Rear Compartment Lamp Inoperative

7

1. Place the headlamp switch in the PARK position.
2. Open the engine compartment lid (Buick only).

The engine compartment lamp lights.

Underhood Lamp Inoperative

8

Open each vanity mirror cover.

The vanity mirror lamp lights.

Vanity Mirror Lamp Inoperative

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