GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Set the outside remote control rearview mirror select switch to the left position.
  2. Move the outside remote control rearview mirror switch to the UP and then to the DOWN positions.

The left outside rearview mirror moves smoothly upward and then downward.

2

  1. Leave the outside remove control rearview mirror select switch in the left position.
  2. Move the outside remote control rearview mirror switch to the left and then to the right positions.

The left outside rearview mirror moves smoothly to the left and then to the right.

3

  1. Set the outside remote control rearview mirror select switch to the right position.
  2. Move the outside remote control rearview mirror switch to the UP and then to the DOWN positions.

The right outside rearview mirror moves smoothly upward and downward.

4

  1. Leave the outside remote control rearview mirror select switch to the right position.
  2. Move the outside remote control rearview mirror switch to the left and then to the right positions.

The right outside rearview mirror moves smoothly to the left and the right.

5

  1. Turn the ignition switch to the RUN position.
  2. Press and release the rear defogger switch.

The outside mirrors heatup for to 10 minutes.

Defoggers and Heated Mirrors Always On

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.