GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: Both vanity mirrors are inoperative, but the stepwell lamps (which are operated by the same fuse) are operating properly.

1

Review the sun shade mirror lamp operation and perform the necessary inspections.

Did you complete the system review and inspection?

--

Go to Step 2

Go to Symptoms

2

Ensure that the left sun shade mirror lamp brightness adjustment is not at the minimum. Attempt to operate the sun shade mirror lamp.

Does the system operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the sunshade mirror lamp connector.
  2. Measure the voltage at cavity A of the sunshade mirror lamp connector.

Is the measurement equal to battery voltage?

--

Go to Step 5

Go to Step 4

4

Repair the open CKT 40 (ORN) between splice S308 and the sunshade mirror lamp.

Did you complete the repair?

B+

Go to Step 8

--

5

Test continuity between ground and cavity B of the sunshade mirror lamp connector.

Did the test indicate continuity?

--

Go to Step 7

Go to Step 6

6

Repair the open CKT 150 (BLK) between splice S204 and the sunshade mirror lamp.

Did you complete the repair?

--

Go to Step 8

--

7

Replace the sunshade mirror lamp bulb.

Did you complete the repair?

--

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3