GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lamps System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2

Connect a test lamp from CKT 40 (ORN) from the affected sunshade mirror lamp connector cavity A to ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Connect a self-powered test lamp from cavity B to B+.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 40 (ORN) from the affected sunshade mirror lamp to the instrument panel fuse block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--

5

Replace the sunshade mirror lamp. Refer to Vanity Mirror Lamp Replacement .

Is the repair complete?

--

Go to Interior Lamps System Check

--

6

Repair the open in CKT 150 (BLK) from the sunshade mirror lamp to ground G200. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

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