Onstar (R) Cellular Antenna Replacement

REMOVAL PROCEDURE




1. Disconnect the cellular coaxial cable (2) from the coupling box (1).
2. Remove the coupling box from the interior of the rear window using a small wide-bladed plastic tool in order to release the adhesive.
3. Remove the cellular antenna from the exterior of the rear window using a small wide-bladed plastic tool in order to release the adhesive.




4. Clean the adhesive residue from the rear window using a razor blade, isopropyl alcohol pad and a clean lint-tree cloth.

INSTALLATION PROCEDURE




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).

IMPORTANT: Do not touch the adhesive backing.




4. Remove the protective backing from the adhesive backing of the coupling box.
5. Install the coupling box to the marked location on the interior surface of the rear window with the cellular coaxial cable toward the headliner. Press the coupling box into place until fully seated for approximately 30 seconds.
6. Clean the exterior surface of the rear window in the cellular antenna mounting location, using an isopropyl alcohol pad and a clean lint-free cloth to remove the grease pencil marks and allow to air dry.

IMPORTANT: Do not touch the adhesive backing.

7. Remove the protective backing from the adhesive backing of the cellular antenna.

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

8. Install the cellular antenna base to the foot print location of the coupling box on the exterior surface of the rear window with the cellular antenna mast in a straight up position.

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.

9. Press the cellular antenna coupling base into place until fully seated for approximately 30 seconds.
10. Clean the rear window with glass cleaner GM P/N 1050427 or the equivalent in order to remove any finger prints.
11. Allow a cure time of one hour at 60°C or above in order to achieve maximum bonding of the cellular antenna base.