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Onstar(R) - Antenna Coupling Revised Procedures

File In Section: 08 - Body and Accessories

Bulletin No.: 01-08-46-006A

Date: December, 2001

SERVICE MANUAL UPDATE

Subject:
Revised OnStar(R) Antenna Coupling Replacement Procedures

Models:
2000-2002 Passenger Cars and Trucks with Glass Mounted Antenna

This bulletin is being revised to add the 2002 model year and revise the service procedures. Please discard Corporate Bulletin Number 01-08-46-006 (Section 08 - Body and Accessories).

This bulletin is being issued to revise the OnStar(R) inner and outer antenna coupling replacement procedures in the Cellular Communication sub-section of the Body and Accessories section in the appropriate Service Manual. Please use the following to replace the existing information in the Service Manual.

This information has been updated within SI2000. If you are using a paper version of this Service Manual, please mark a reference to this bulletin on the affected page in the Cellular Communication sub-section of the Service Manual.

Coupling Replacement - Antenna Inner

Removal Procedure

Important:
Use the described adhesion promoter to assure adequate bonding of the coupling to the glass. 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 and for 6-8 hours immediately following the installation. Otherwise the new couplings may come off. Also, disregard the drying or curing time information listed in the instructions included in the replacement antenna coupling kits. In the near future, those instructions will be updated with the drying or curing times listed in this bulletin.

^ Do not attempt to reinstall the original cellular 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.





1. Disconnect the coaxial cable from the inner coupling of the mobile communication antenna.

Notice:
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.

Use a small, wide-bladed plastic tool to cut the double back tape material while lifting up on the inner antenna coupling.

Installation Procedure





1. Clean the inside of the glass with an alcohol wipe.

2. Dry the glass thoroughly using a lint free cloth.

Important:
The glass adhesion promoter described in the next step must be used to ensure a bonding of the coupling to the glass surface. Failure to use the described adhesion promoter may result in the coupling coming off the glass.

3. Apply Glass Adhesion Promoter, P/N 12378555 (in Canada, use P/N 88901239), to the glass in the area where you will install the antenna coupling. Follow the Glass Adhesion Promoter instructions on the product label.

Important:

^ On rear backglass applications the RF connections for the inner antenna coupling should run parallel to the defogger gridline.

^ Align the inner and the outer antenna couplings.

^ Do not touch the adhesive backing on the antenna coupling.

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

5. Align the inner antenna coupling to the existing exterior coupling.





6. Press firmly on all 4 corners and on the center of the antenna inner coupling (2) in order to ensure proper adhesion to the glass (4).

Hold pressure on the inner coupling (2) for 10 to 30 seconds.

7. Ensure that no gaps occur between the couplings (5, 2) and the glass (4).

8. Connect the coaxial cable to the inner coupling (2).

9. Keep the vehicle dry. Allow 6 to 8 hours, at 15°C (60° F), for the adhesive to cure after installation.

Coupling Replacement - Antenna Outer

Removal Procedure

Important:

Use the described adhesion promoter to assure adequate bonding of the coupling to the glass.

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 and for the 6-8 hours immediately following the installation. Otherwise the new couplings may come off. Also, disregard the drying or curing time information listed in the instructions included in the replacement antenna coupling kits. In the near future, those instructions will be updated with the drying or curing times listed in this bulletin.

^ Do not attempt to reinstall the original cellular 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.





1. Install the inner coupling first if both the inner and the outer coupling are to be replaced.

Refer to Coupling Replacement - Antenna Inner.

Notice:
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 outer antenna coupling.

Installation Procedure





1. Clean the glass with an alcohol wipe.

2. Dry the glass thoroughly using a lint free cloth.

Important:
The glass adhesion promoter described in the next step must be used to ensure a bonding of the coupling to the glass surface. Failure to use the described adhesion promoter may result in the coupling coming off the glass.

3. Apply Glass Adhesion Promoter, P/N 12378555 (in Canada, use P/N 88901239), to the glass in the area where you will install the antenna coupling. Follow the Glass Adhesion Promoter instructions on the product label.

Important:

^ Align the outer antenna coupling with the inner coupling.

^ 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. Align the outer antenna coupling to the inner antenna coupling.

6. Press firmly on all 4 corners and on the center of the outer antenna coupling (5) in order to ensure proper adhesion to the glass (4).

Hold pressure on the outer coupling (5) for 10 to 30 seconds.

7. Ensure that no gaps occur between the couplings (5, 2) and the glass (4).

8. Keep the vehicle dry. Allow 6 to 8 hours, at 15°C (60°F), for the adhesive to cure after installation.





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