Express 3500 V8-6.0L VIN U (2004)
Global Positioning System Antenna: Service and Repair
Coupling Replacement - Antenna Inner
COUPLING REPLACEMENT - ANTENNA INNER
REMOVAL PROCEDURE
IMPORTANT:
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The adhesion promoter must be used to assure adequate bonding of the coupling.
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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. Allow 6 to 8 hours, at 15°C (60°F), for the adhesive to cure after installation. Otherwise the new
coupling may come not adhere.
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Do not use using any type of glue, adhesive tapes, etc. to reinstall the original couplings. 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.
1. Disconnect the coaxial cable (1) from the inner coupling (2) of the mobile communication antenna.
NOTE: 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.
2. Use a small wide-bladed plastic tool to cut the double-back tape material while lifting up on the inner antenna coupling (2).
INSTALLATION PROCEDURE
1. Clean the inside of the rear window with an alcohol wipe.
2. Dry the glass thoroughly using a lint free cloth.
IMPORTANT:
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The adhesion promoter must be used to assure adequate bonding of the coupling.
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Mask off or protect areas before applying the adhesion promoter.
1. Apply Glass Adhesion Promoter GM P/N 12378555 (Canadian P/N 88901239) to the rear window in the area where you will install the antenna
