GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lights System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2

Connect a test lamp from CKT 1732 (ORN) wire above the headliner at the LH or the RH sunshade mirror to ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

Locate and repair the open in CKT 1732 (ORN).

Is the repair complete?

--

Go to Interior Lamps System Check

--

4

Connect a test lamp between CKT 1850 (BLK) at the LH or the RH sunshade mirror lamp and CKT 1735.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5

Replace the sunshade mirror lamp.

Is the repair complete?

--

Go to Interior Lamps System Check

--

6

Locate and repair the open in CKT 1850 (BLK).

Is the repair complete?

--

Go to Interior Lamps System Check

--