GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Has the Automatic Day-Night Mirrors System Check been performed?

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Go to Step 2

Go to Automatic Day-Night Mirrors System Check

2

  1. Disconnect the automatic day-night rear view mirror connector.
  2. Connect a test lamp from CKT 39 (PNK) at the automatic day-night rear view mirror connector cavity 1 to ground.
  3. Place the ignition switch in the RUN position.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Connect a test lamp from CKT 39 (PNK) cavity 1 to CKT 150 (BLK) at cavity 2 of the automatic day-night rear view mirror connector.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 39 (PNK) between the automatic day-night rear view mirror connector and C271 or in CKT 39 (PNK) between C271 and the IP fuse block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

--

5

Replace the automatic day-night mirror. Refer to Inside Rearview Mirror Replacement .

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

--

6

Repair the open in CKT 150 (BLK) between the automatic day-night rear view mirror connector and ground. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

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