GM Service Manual Online
For 1990-2009 cars only

Outside Rearview Mirror Glass Replacement Electrical

Removal Procedure

Caution: When working with any type of glass or sheet metal with exposed or rough edges, wear approved safety glasses and gloves in order to reduce the chance of personal injury.


    Object Number: 378747  Size: SH
  1. Push in on one edge of the mirror glass (1) tilting the mirror case to allow finger access.
  2. Grasp the glass (1) case firmly and pull the case from the mirror body.
  3. Remove the jackscrews (4) from the motor pack unit (5).
  4. Important: Inspect the motor pack unit (5) and if damaged, replace entire mirror assembly.

Installation Procedure

Caution: When working with any type of glass or sheet metal with exposed or rough edges, wear approved safety glasses and gloves in order to reduce the chance of personal injury.


    Object Number: 378747  Size: SH
  1. Install the jackscrews (4) and trunion bars (2) to the new glass (1).
  2. Install new rearview mirror glass.
  3. 2.1. Align jackscrews (3) perpendicular to the glass (1).
    2.2. Align trunnion bar parallel (2) to glass
    2.3. Position end of jackscrews (3) at opening approximately 13 mm (0.5 inch) into pack unit (5).
    2.4. Visually align trunnion bar with receptor by lifting inboard corner of glass.
    2.5. Apply pressure with palm of hand until glass is seated firmly to receptor.
    2.6. Manually rotate glass to check for proper installation.

Outside Rearview Mirror Glass Replacement Manual

Removal Procedure

  1. Place tape over glass surface of mirror.
  2. Break glass.
  3. Remove broken pieces from mirror mount.
  4. Clean mounting surface with clean cloth.

Installation Procedure

  1. Remove protective liner to expose adhesive.
  2. Press new glass firmly onto center of mirror.
  3. Ensure that glass is firmly affixed to mirror.