GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Interior Lamps System Check performed?

--

Go to Step 2

Go to Interior Lamps System Check

2

Is one sun shade mirror lamp inoperative?

--

Go to Step 6

Go to Step 3

3

  1. Ensure that the left sun shade mirror lamp brightness adjustment is not at the minimum.
  2. Remove a bulb from the left sun shade mirror lamp.
  3. Connect an unpowered test lamp between the left sun shade mirror lamp socket, cavity A for CKT 40 (ORN), and ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

4

Repair the open in CKT 150 (BLK) between splice S204 and ground G201.

Are both sun shade mirror lamp bulbs operative?

--

Go to Interior Lamps System Check

Go to Step 5

5

Repair the open in CKT 40 (ORN) between splice S227 and splice S308.

Are both sun shade mirror lamp bulbs operative?

--

Go to Interior Lamps System Check

Go to Step 6

6

Is the left sun shade mirror lamp operative?

--

Go to Step 13

Go to Step 7

7

  1. Ensure that the left sun shade mirror lamp brightness adjustment is not at the minimum.
  2. Remove a bulb from the left sun shade mirror lamp.
  3. Connect a unpowered test lamp between the left sun shade mirror lamp socket, cavity A for CKT 40 (ORN), and ground.

Does the test lamp light?

--

Go to Step 9

Go to Step 8

8

Repair the open in CKT 40 (ORN) between the left bulb sun shade mirror lamp and splice S308.

Is the left sun shade mirror lamp operative?

--

Go to Step 12

Go to Step 9

9

Connect an unpowered test lamp between the left bulb sun shade mirror lamp socket, cavity B for CKT 40 (ORN), and ground.

Does the test lamp light?

--

Go to Step 10

Go to Step 11

10

Replace the left sun shade mirror lamp bulbs.

Is the left sun shade mirror lamp operative?

--

Go to Step 12

Go to Step 11

11

Repair the open in CTK 150 (BLK) between splice S204 and the connector for the left bulb in the sun shade mirror lamp.

Is the right sun shade mirror lamp operative?

--

Go to Interior Lamps System Check

Go to Step 13

12

Is the right sun shade mirror lamp operative?

--

Go to Interior Lamps System Check

Go to Step 13

13

  1. Ensure that the right sun shade mirror lamp brightness adjustment is not at the minimum.
  2. Remove a bulb from the right sun shade mirror lamp.
  3. Connect a unpowered test lamp between the right sun shade mirror lamp socket, cavity A for CKT 40 (ORN), and ground.

Does the test lamp light?

--

Go to Step 15

Go to Step 14

14

Repair the open in CKT 40 (ORN) between the right bulb sun shade mirror lamp connector and splice S308.

Is the right sun shade mirror lamp operative?

--

Go to Interior Lamps System Check

Go to Step 15

15

Connect an unpowered test lamp between the right bulb sun shade mirror lamp connector, cavity B for CKT 150 (BLK), and ground.

Does the test lamp light?

--

Go to Step 16

Go to Step 17

16

Replace the right sun shade mirror lamp bulbs.

Is the right sun shade mirror lamp operative?

--

Go to Interior Lamps System Check

Go to Step 17

17

Repair the open in CKT 150 (BLK) between splice S204 and the connector for the right bulb in the sun shade mirror lamp.

Is the right sun shade mirror lamp operative?

--

Go to Interior Lamps System Check

--