GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Body and Accessories 🢒 Entertainment 🢒 Antenna Amplifier Replacement

Removal Procedure
  1. Remove the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.
  2. Remove the rear shelf trim. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.

    3. Object Number: 415115 Size: SH
  3. Disconnect the radio antenna ampflier lead from the rear window antenna.

    4. Object Number: 415099 Size: SH
  4. Disconnect the radio antenna ampflier lead from the body wiring harness antenna lead.
  5. Remove the tape from the radio antenna ampflier leads.

    6. Object Number: 415112 Size: SH
  6. Remove the bolt from the antenna amplifer.
  7. Remove the antenna amplifer from the roof inner side rail.

    8. Object Number: 415106 Size: SH
  8. Disconnect the antenna amplifer lead from the windshield.

    9. Object Number: 415102 Size: SH
  9. Remove the antenna amplifer harness retainers from the roof inner side rail.

    10. Object Number: 415100 Size: SH
  10. Remove the bolt to the antenna amplifer ground lead.
  11. Remove the antenna amplifer ground lead from the roof inner side rail.
  12. Remove the antenna ampfiler harness from the vehicle.

Installation Procedure

    Object Number: 415112 Size: SH
  1. Install the antenna ampfiler harness to the vehicle.

    2. Object Number: 415104 Size: SH
  2. Install the antenna amplifer harness retainers to the roof inner side rail.

    3. Object Number: 415106 Size: SH
  3. Connect the antenna amplifer lead to the windshield.

    4. Object Number: 415100 Size: SH
  4. Install the antenna amplifer ground lead to the roof inner side rail.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the bolt to the antenna amplifer ground lead.

    6. Tighten
    Tighten the bolt to the antenna amplifer ground lead to 2 N·m (18 in lb).


    Object Number: 415112 Size: SH
  6. Install the antenna amplifer to the roof inner side rail.
  7. Install the bolt to the antenna amplifer.

    8. Tighten
    Tighten the bolt to the antenna amplifer to 2 N·m (18 in lb).


    Object Number: 415099 Size: SH
  8. Connect the radio antenna ampflier lead to the body wiring harness antenna lead.

    9. Object Number: 415115 Size: SH
  9. Connect the radio antenna ampflier lead to the rear window antenna.

    10. Object Number: 415116 Size: SH
  10. Apply new tape to the radio antenna ampflier leads.
  11. Install the rear shelf trim. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.
  12. Install the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.