GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the Automatic Day-Night Mirrors Circuit Description and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

2

  1. Turn ON the ignition, with the engine OFF.
  2. Press the COMPASS button on the automatic day/night mirror switch.

Does the compass display a direction or "C"?

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Go to Step 3

Go to Step 4

3

Does the compass display the correct direction?

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Go to Step 6

Go to Step 4

4

Calibrate the compass to the proper zone. Refer to Compass Calibration Description .

Does the compass display the correct direction?

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Go to Step 6

Go to Step 5

5

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

Is the automatic day/night mirror replacement complete?

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Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2