GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2000 🢒 Eldorado 🢒 Body and Accessories 🢒 Stationary Windows 🢒 Mobile Telephone Antenna Replacement

Removal Procedure

    Important: Do not attempt to reinstall the original antenna exterior base or the interior coupling using any type of glue, adhesive tapes, ect. Doing so may eliminate the cellular signal transfer through the glass and reduce the maximum performance of the system that includes air bag deployment.

  1. Remove the left quarter trim panel. Refer to Rear Quarter Upper Trim Panel Replacement in Interior Trim.

    2. Object Number: 643038 Size: SH
  2. Disconnect the cellular coaxial cable (2) from the coupling box (1).

    3. Important: Be careful not to damage the defroster grid lines.

  3. Remove the coupling box from the interior of the rear window using a small flat-bladed plastic tool in order to release the double back adhesive tape.
  4. Remove the cellular antenna base from the exterior of the rear window using a small flat-bladed plastic tool in order to release the double back adhesive tape.

    5. Object Number: 569466 Size: SH
  5. Clean the adhesive residue from the rear window using a new razor blade, isopropyl alcohol pad and a clean lint-free cloth.

Installation Procedure

    Object Number: 643038 Size: SH

    Important: Do not attempt to reinstall the original antenna exterior base or the interior coupling using any type of glue, adhesive tapes, ect. Doing so may eliminate the cellular signal transfer through the glass and reduce the maximum performance of the system that includes air bag deployment.

  1. Clean the interior and the exterior surface of the rear window in the cellular antenna mounting location, using an isopropyl alcohol pad, a clean lint-free cloth and allow to air dry.
  2. Mark the cellular antenna location with a grease pencil on the exterior surface of the rear window.
  3. Connect the cellular coaxial cable (2) to the coupling box (1).
  4. Allow a cure time of 24 hours at 60°F (16°C) or above in order to achieve maximum bonding of the cellular antenna coupling box.

    5. Important: Do not touch the adhesive backing.

  5. Remove the protective film from the adhesive backing of the coupling box.
  6. Install the coupling box to the marked location on the interior surface of the rear window with the cellular coaxial cable toward the headliner.

    7. Press the coupling box into place until fully seated for approximately 30 seconds.


    Object Number: 569466 Size: SH
  7. Clean the exterior surface of the rear window in the cellular antenna base mounting location, using an isopropyl alcohol pad and a clean lint-free cloth to remove the grease pencil marks and allow to air dry.

    8. Object Number: 650826 Size: SH

    Important: Do not touch the adhesive backing.

  8. Remove the protective film from the adhesive backing of the cellular antenna base (1).
  9. Allow a cure time of 24 hours at 60°F (16°C) or above in order to achieve maximum bonding of the cellular antenna base.

    10. Important: Failure to exactly follow the location foot print will result in severe phone and vehicle audio performance degradation.

  10. Install the cellular antenna base to the foot print location of the coupling box (2) on the exterior surface of the rear window (4) with the cellular antenna mast (5) in a straight up position.

    11. Important: Press firmly around the entire periphery of the coupling base in order to ensure the wetting out of the adhesive and to eliminate any air bubbles.

  11. Press the cellular antenna coupling base into place until fully seated for approximately 30 seconds.
  12. Clean the rear window with glass cleaner GM P/N 1050427 (Canadian P/N 992727) or the equivalent in order to remove any finger prints.
  13. Install the left quarter trim panel. Refer to Rear Quarter Upper Trim Panel Replacement in Interior Trim.