GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: This diagnostic should only be used if the LH Mirror moves left and right but will not move up and down.

1

Has the Outside Mirrors System Check been performed?

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Go to Step 2

Go to Outside Mirrors System Check

2

  1. Disconnect the left power outside rearview mirror.
  2. Position Selector Switch to the Power Mirror.
  3. Connect a test lamp from CKT 89 (LT GRN), to ground.
  4. Press the switch in the DOWN position.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

  1. Connect a test lamp from CKT 981 (RED) to B+.
  2. Press the switch in the DOWN position.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

  1. Check for open in CKT 89 (LT GRN) between the left power outside rearview mirror and the mirror switch.
  2. If OK, replace to Power Outside Rearview Mirror Switch.

Is the repair complete?

--

Go to Outside Mirrors System Check

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5

Replace the left power outside rearview mirror. Refer to Outside Rearview Mirror Replacement .

Is the repair complete?

--

Go to Outside Mirrors System Check

--

6

Replace the Power Outside Rearview Mirror Switch.

Is the repair complete?

--

Go to Outside Mirrors System Check

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