GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Envoy - 2WD 🢒 Body and Accessories 🢒 Cellular Communication 🢒 Mobile Telephone Antenna Outer Coupling Replacement

Removal Procedure

    Important: 

       • The adhesion promoter must be used to assure adequate bonding of the coupling.
       • To obtain maximum adhesion between the new cellular antenna couplings and the glass surface, the cellular antenna couplings and the glass must be kept dry and above 15°C (60°F) during the installation, and for 24 hours immediately following the installation. Otherwise the new couplings may not remain on the glass.
       • 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: 813184 Size: SH
  1. Install the inner coupling first, if both the inner and outer couplings are to be replaced. Refer to Mobile Telephone Antenna Inner Coupling Replacement .
  2. Use a thin, wide-bladed plastic tool to cut the double back tape material, while lifting up on the outer antenna coupling.

Installation Procedure

    Object Number: 569466 Size: SH
  1. Clean the outside of the back glass with alcohol wipe.
  2. Dry the glass thoroughly using a lint free cloth.

    3. Important: 

       • The adhesion promoter must be used to assure adequate bonding of the coupling.
       • Mask or protect the surrounding area before applying the adhesion promoter.

  3. Apply Glass Adhesion Promoter GM P/N 12378555 (Canadian P/N 88901239) to the back glass in the area the antenna coupling is to be installed.

    4. Follow the Glass Adhesion Promoter instructions on the product label.

    Important: 

       • Ensure the inner and outer antenna couplings are aligned.
       • Do not touch the adhesive backing on the antenna coupling.

  4. Remove the protective film from the adhesive backing on the outer antenna coupling.

    5. Object Number: 650826 Size: SH
  5. Align the outer antenna coupling to the inner antenna coupling.
  6. Press firmly on all 4 corners and on the center of the antenna outer coupling (2) in order to ensure proper adhesion to the back glass (4). Hold pressure on the outer coupling (5) for 10-30 seconds.
  7. Ensure that no gaps are present between the couplings (5, 2) and the back glass (4).