GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Is the inoperative mirror the left outside rearview mirror?

--

Go to Step 2

Go to Step 6

2

  1. Disconnect the left outside rearview mirror wiring harness connector.
  2. Using a test light, frontprobe between B+ and left outside rearview mirror harness connector (male side) terminal C.
  3. Set the outside mirror select switch to the left mirror.
  4. Press and hold the outside remote control rearview mirror switch DOWN button.

Did the test light illuminate?

--

Go to Step 7

Go to Step 3

3

Inspect for a poor connection or an open in circuit 89.

Is there a poor connection or an open in circuit 89?

--

Go to Step 4

Go to Step 5

4

Repair a poor connection or an open in circuit 89.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

--

5

Replace the outside remote control rearview mirror switch.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

6

  1. Disconnect the right outside rearview mirror wiring harness connector.
  2. Using a test light, frontprobe between B+ and the right outside rearview mirror harness connector (male side) terminal C.
  3. Set the outside mirror select switch to the right mirror.
  4. Press and hold the outside remote control rearview mirror switch DOWN button.

Did the test light illuminate?

--

Go to Step 7

Go to Step 8

7

Replace the mirror motor pack. Refer to Outside Rearview Mirror Motor Replacement .

Is the repair complete?

--

Go to Outside Mirrors System Check

--

8

Inspect for a poor connection or an open in circuit 889.

Is there a poor connection or an open in circuit 889?

--

Go to Step 9

Go to Step 5

9

Repair a poor connection or an open in circuit 889.

Is the repair complete?

--

Go to Outside Mirrors System Check

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