GM Service Manual Online
For 1990-2009 cars only

Diagnostic Aids

Inspect for magnetic components or cellular phones near the mirror. These components can cause the compass to read inaccurate or become inoperative.

Step

Action

Yes

No

1

Did you perform the Automatic Day-Night Mirror Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Automatic Day-Night Mirror

2

  1. Turn ON the ignition, with the engine OFF.
  2. Press the COMPASS button on the inside rearview mirror switch.

Does the compass display a direction?

Go to Step 3

Go to Step 5

3

Does the compass display the correct direction?

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?

Go to Step 6

Go to Step 5

5

Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement .

Did you complete the replacement?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2