GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Important: 

       • To obtain maximum adhesion between the new mobile antenna couplings and the glass surface, the couplings and the glass must be kept dry and above 15°C (60°F) during the installation and for the 24 hours immediately following the installation. Otherwise the new couplings may come off.
       • Do not attempt to reinstall the original couplings using any type of glue, adhesive tapes, etc. Doing so may eliminate the cellular signal transfer through the glass and reduce the maximum performance of the system, including the air bag deployment notification.


    Object Number: 802692  Size: SH
  1. Disconnect the coaxial cable from the inner coupling of the mobile communication antenna.
  2. Notice: If you use a razor blade or other sharp tool in order to remove the adhesives or foreign objects from the inside of the rear window, use the blade carefully. Damage to the grid lines may result.

  3. Use a small wide-bladed plastic tool to cut the double back tape material while lifting up on the inner antenna coupling.

Installation Procedure


    Object Number: 569466  Size: SH
  1. Clean the inside of the back glass with an alcohol wipe.
  2. Dry the glass thoroughly using a lint free cloth.
  3. Apply Glass Adhesion Promoter P/N 12378555 (P/N 88901239 in Canada) to the back glass in the area where you will install the antenna coupling. Follow the Glass Adhesion Promoter instructions on the product label.
  4. Important: 

       • The RF connections for the inner antenna coupling should run parallel to the defogger gridline.
       • Align the inner and the outer antenna couplings.
       • Do not touch the adhesive backing on the antenna coupling.

  5. Remove the protective film from the adhesive backing on the inner antenna coupling.

  6. Object Number: 802688  Size: SH
  7. Align the inner antenna coupling to the 4 locating marks on the back glass above the defogger gridline, or to the existing exterior coupling.

  8. Object Number: 650826  Size: SH
  9. Press firmly on all 4 corners and on the center of the antenna inner coupling (2) in order to ensure proper adhesion to the back glass (4). Hold pressure on the inner coupling (2) for 10-30 seconds.
  10. Ensure that no gaps occur between the couplings (5,2) and the back glass (4).
  11. Connect the coaxial cable to the inner coupling (2).