Onstar (R) Cellular Antenna Replacement
REMOVAL PROCEDUREIMPORTANT: If glass replacement is required, both the Cellular Antenna Kit and the Cellular Antenna Inner Coupling are required.
1. Disconnect the cellular coaxial cable from the coupling box.
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. Clear the adhesive residue from the rear window using a razor blade and isopropyl alcohol pad an a clean lint-free cloth.
INSTALLATION PROCEDURE
IMPORTANT: Do not attempt to reinstall the original cellular antenna exterior base or interior coupling 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 that includes air bag deployment notification.
The base, coupling, and glass must be kept dry and above 15°C (60°F) during the installation and for the 24 hours immediately following the installation. Not following these directions may result in the new cellular antenna exterior base or interior coupling coming off.
1. Clean the interior and the exterior surface of the rear window in the cellular antenna mounting location, using an isopropyl alcohol pad and a clean lint-free cloth and allow to air dry.
2. Mark the cellular antenna location (A) 92 mm (3.75 in) and (B) 80 mm (3.25 in) with a grease pencil on the exterior surface of the rear window.
3. Connect the cellular coaxial cable to the coupling box.
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 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.
Press the cellular antenna into place until fully seated for approximately 30 seconds.
9. Clean the rear window with window cleaner GM P/N 10504227 or equivalent to remove any finger prints.
10. Allow a cure time of 24 hours at 15°C (60 °F) or above in order to achieve maximum bonding of the cellular antenna.