GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Automatic Day-Night Mirror System Check performed?

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Go to Step 2

Go to Automatic Day-Night Mirrors System Check

2

  1. Disconnect the automatic outside day-night rear view mirror connector C604 and the automatic inside day-night rear view mirror connector.
  2. Connect a digital multimeter (DMM) between cavity G of connector C604 and cavity 4 of the automatic inside day-night rear view mirror connector.

Does continuity exist?

--

Go to Step 3

Go to Step 5

3

Connect a digital multimeter (DMM) between connector C604 cavity B and the automatic inside day-night rear view mirror connector cavity 5.

Does continuity exist?

--

Go to Step 4

Go to Step 6

4

Connect a digital multimeter (DMM) between the automatic outside day-night rear view mirror connector C604 cavities G and B.

Does continuity exist?

--

Go to Step 8

Go to Step 7

5

Repair the open in CKT 1690 (GRY) between connector C604 cavity G and the automatic inside day-night rear view mirror.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

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6

Repair the open in CKT 1691 (PNK) between connector C604 cavity B and the automatic inside day-night rear view mirror.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

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7

Replace the RH automatic outside day-night rear view mirror.

Is the repair complete?

--

Go to Automatic Day-Night Mirrors System Check

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8

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

Is the repair complete?

Go to Automatic Day-Night Mirrors System Check

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