GM Service Manual Online
For 1990-2009 cars only

Radio Speaker Amplifier Replacement with UM5, UQ4

Removal Procedure

  1. Remove the rear seat back in order to access the amplifier. Refer to Rear Seat Back Replacement in Seats.

  2. Object Number: 443271  Size: SH
  3. Release the retainers (3) holding the amplifier (2) to the electronics bay board (4).
  4. Disconnect the electrical connectors (5) from the amplifier (2).
  5. Remove the amplifier.

Installation Procedure


    Object Number: 443271  Size: SH
  1. Connect the electrical connectors (5) to the amplifier (2).
  2. Install the amplifier (2) onto the electronics bay board (4).
  3. Ensure the retainer clips engage the amplifier in order to secure.
  4. Install the rear seat back. Refer to Rear Seat Back Replacement in Seats.