Onstar Cellular Antenna Replacement

REMOVAL PROCEDURE




1. Lower the front of the headliner. Refer to Headliner Replacement in Interior Trim.
2. Disconnect the coaxial cable from the inner antenna base.
3. Remove the cell antenna mast by turning counterclockwise.
4. Remove the fastener until the outer base can be separated from the roof of the vehicle.
5. Push on the tab in the small hole of the inner antenna base.
6. Remove the inner antenna base from the vehicle.

INSTALLATION PROCEDURE




1. Install the inner antenna base in the large hole first, then push in the tab into the small hole until the tab locks into place.
2. Install the outer antenna base to the roof.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Install the fastener.

Tighten
Tighten the antenna fastener to 3 N.m (27 lb in).

4. Install the outer antenna mast to the fastener by turning clockwise.
5. Connect the coaxial cable to the inner antenna base.
6. Install the front of the headliner.