GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 STS 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Cellular Communications/Digital Radio Antenna Replacement

Removal Procedure

    Object Number: 863301 Size: SH

    Caution: DO NOT apply paint or clear coat to the antenna. This will damage the function of the antenna, causing poor reception or loss of signal reception.

  1. Remove the rear sail panels. Refer to Sail Panel Replacement.

    2. Caution: Use care when removing or installing the headliner. Excessive bending will damage the headliner.

  2. Lower the rear of the headliner.
  3. Remove the foam tape from the antenna cable connection.
  4. Disconnect the antenna connectors (1).
  5. Remove the antenna bolt (2) and expansion sleeve (3).

    6. Object Number: 1491976 Size: SH
  6. Remove the antenna.
  7. Remove the screws securing antenna mast to the antenna base.
  8. Remove the mast.

Installation Procedure

    Object Number: 1491976 Size: SH
  1. Install the antenna to the roof.

    2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 863301 Size: SH
  2. Route the wiring pigtail to the side in the slot on the antenna shaft and install the antenna expansion sleeve (3) and bolt (2) to the antenna shaft and tighten to 9 N·m (80 lb in).
  3. Connect the antenna connectors (1).
  4. Wrap the connectors (1) with foam tape.
  5. Install the antenna cable connection above the AM/FM antenna module.
  6. Install the antenna cable hold down clips.
  7. Align the headliner to the roof panel.
  8. Install the rear sail panels. Refer to Sail Panel Replacement.
  9. Locate the mast to the antenna base.
  10. Install the screws securing the mast to the antenna base and tighten to 1 N·m (9 lb in).