GM Service Manual Online
For 1990-2009 cars only

Inside Rearview Mirror Replacement With DD8 and DC4

Removal Procedure

    Notice: Do not use tools or other objects to pry the mirror mount or the mirror away from the windshield. Using tools may damage the mirror mount, the mirror or the windshield.


    Object Number: 381596  Size: SH
  1. Disconnect the electrical connector (1) from the mirror (2).
  2. Adjust the mirror to the full down position.

    Using both hands, grasp both sides of the mirror (2) at the top.

  3. Remove the mirror assembly from the button by rotating the mirror in a downward-rearward motion.

Installation Procedure


    Object Number: 381596  Size: SH
  1. Install the center bottom of the mirror mount against the windshield at the top of the button.
  2. Slide the mount onto the button. Keep the mount parallel to the windshield.
  3. As the mount begins to grip the button, apply a force against the button. Maintain a downward force until the mount snaps onto the button with an audible click.
  4. This operation requires at least 20 pounds of force.

  5. Ensure that the mirror is securely attached to the button by adjusting the mirror in a normal up/down and a side to side range.
  6. Connect the electrical connector (1).
  7. Move the sensitivity switch lever to the MAX position. Turn the vehicle ignition OFF.
  8. In low ambient light, the OFF/M/C/M letters should be illuminated. If the letters are not lit, inspect the connectors and/or the wiring.
  9. For electrochromatic mirrors, test the mirror by simulating glare. Perform the following steps:
  10. 8.1. Cover the forward facing sensor, located on the right side of the mirror back, using a black cloth.
    8.2. Hold the cloth over the sensor until the glass starts to darken to the non-reflective stage.
    8.3. Remove the cloth. The mirror returns to the clear reflective stage.
    8.4. Repeat the previous 3 steps several times in order to ensure that the mirror operates correctly.