GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 378721  Size: MH
  1. Open door to gain access to sealing strip.
  2. Remove door sealing strip with heat gun or careful scraping.
  3. Important: Ensure that sealing strip removal doesn't scratch door finish.

  4. Clean area with suitable solution of isopropyl alcohol 50/50 mixture by volume with water or high flash naptha.
  5. Clean and dry area with dry cloth.

Installation Procedure


    Object Number: 378721  Size: MH
  1. Install new door sealing strip (2) to door (1).
  2. Important: Temperature must be 95 degrees +/- 5 degrees for proper adhesion of strip to door. If necessary, use heat gun to lightly warm strip prior to installation.

  3. Remove protective liner from sealing strip.
  4. Important: Position bottom sealing strip carefully. Sealing strip cannot be removed without reapplying adhesive after contact with vehicle.

  5. Align bottom sealing strip to locating feature starting at rear edge of door inner panel.
  6. Press bottom sealing strip into place and apply pressure along entire surface.