GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 786582  Size: SH
  1. Open the rear compartment lid.
  2. Loosen the amplifier bolts from the amplifier bracket.

  3. Object Number: 786583  Size: SH
  4. Remove the rear window trim panel. Refer to Rear Window Trim Panel Replacement in Body Rear End.
  5. Remove the amplifier bracket screws from the rear parcel shelf.
  6. Disengage the locator tabs (1, 2) on the amplifier bracket from the rear parcel.
  7. Lower the amplifier bracket from the rear parcel shelf.

  8. Object Number: 786524  Size: SH
  9. Finish removing the amplifier bolts (2) from the amplifier bracket (7).
  10. Remove the amplifier (6) from the amplifier bracket (7).
  11. Disconnect the electrical connector (1) from the amplifier (6).

Installation Procedure


    Object Number: 786524  Size: SH
  1. Connect the electrical connector (1) to the amplifier (6).
  2. Install the amplifier (6) to the amplifier bracket (7).
  3. Install the bolts (2) to the amplifier (6) and hand start the bolt threads.

  4. Object Number: 786583  Size: SH
  5. Install the amplifier bracket to the rear parcel shelf and engage the locating tabs (1, 2).
  6. 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.

  7. Install the amplifier bracket screws to the rear parcel shelf.
  8. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  9. Install the trim panel which covers the rear seat to the rear window. Refer to Rear Window Trim Panel Replacement in Body Rear End.

  10. Object Number: 786582  Size: SH
  11. Finish tighting the amplifier bolts.
  12. Tighten
    Tighten the bolts to 4 N·m (35 lb in).

  13. Close the rear compartment lid.