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 (C1 if luxury).
  2. Connect a test lamp from CKT 39 (PNK) at the automatic day-night rear view mirror connector (C1 if luxury) cavity 1 to ground.
  3. Place the ignition switch in the RUN position.

Does the test lamp light?

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Go to Step 3

Go to Step 4

3

Connect a test lamp from CKT 39 (PNK) cavity 1(C1 if luxury) to CKT 150 (BLK) at cavity 2 (C1 if luxury) of the automatic day-night rear view mirror connector.

Does the test lamp light?

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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 (C1 if luxury) and C271 or in CKT 39 (PNK) between C271 and the IP fuse block. Refer to Wiring Repairs in wiring.

Is the repair complete?

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Go to Automatic Day-Night Mirrors System Check

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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

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6

Repair the open in CKT 150 (BLK) between the automatic day-night rear view mirror connector (C1 if luxury) and ground. Refer to Wiring Repairs in wiring.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

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