GM Service Manual Online
For 1990-2009 cars only

Inside Rearview Mirror Replacement Spring Clip Mount

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: 604120  Size: SH
  1. Remove the rearview mirror wire cover (3).
  2. Disconnect the electrical connectors (1) at the rear of the mirror (2).
  3. Using both hands, grasp both sides of the mirror (2) at the top.
  4. Pull the rearview mirror (2) downward, while twisting simultaneously, in order to release the rearview mirror from the support button.

Installation Procedure


    Object Number: 604120  Size: SH
  1. Position the bottom of the mirror base against the windshield at the top of the support button (4).
  2. Slide the base onto the support button (4).
  3. Maintain the base parallel to the windshield.

  4. Hold the base firmly against the windshield, pulling downward in order to engage the base onto the support button (4). An audible click will be heard as the base snaps onto the support.
  5. This operation requires at least 20 pounds of force.

  6. Ensure that the mirror assembly is securely attached to the support button (4) by moving the mirror in a normal up/down and side to side range.
  7. Connect the electrical connectors (1).
  8. Install the rearview mirror wire cover (3).
  9. Calibrate the mirror compass. Refer to Compass Calibration Description .

Inside Rearview Mirror Replacement Set Screw Mount

Removal Procedure

  1. Remove the wire cover.

  2. Object Number: 657850  Size: SH
  3. Disconnect the electrical connector (2) from the back of the mirror.
  4. Adjust the rearview mirror (1) to the full upward position.
  5. Remove the base trim cover.
  6. Loosen the set screw (3) at the mirror base.
  7. Slide the rearview mirror assembly (1) upward in order to remove the rearview mirror assembly (1) from the mirror button.

Installation Procedure


    Object Number: 657850  Size: SH
  1. Position the center bottom of the rearview mirror (1) against the windshield at the top of the support button.
  2. Slide the base of the rearview mirror (1) onto the button.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Hand tighten the set screw (3).
  5. Tighten
    Tighten the set screw to 1.8 N·m (16 lb in) in order to secure the mirror base to the button.

  6. Install the base trim cover.
  7. Connect the electrical connector (2).
  8. Install the wire cover.
  9. Reposition the mirror assembly.
  10. Calibrate the mirror compass. Refer to Compass Calibration Description .