GM Service Manual Online
For 1990-2009 cars only

Sound Barrier Replacement - Rear Seat Cushion to Floorpan LWB

Removal Procedure

  1. Remove the rear seat back. Refer to Rear Seat Back Replacement .
  2. Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement .

  3. Object Number: 1939829  Size: SH
  4. Lift the rear floor pan sound barriers (1) upward and pull outward in order to remove.

Installation Procedure

    Caution: All floor pan insulator material must meet Federal Vehicle Safety Standards for flammability. Failure to do so could result in personal injury and/or vehicle damage.

    Important: Align the sound barriers in order to keep the seat belt and seat attachment areas are clear.

    Important: When installing the barriers, ensure they are aligned with the respective holes in the sheet metal.

  1. Ensure the attachment areas are clear.
  2. Remove the backing of the sound barriers.
  3. Route the sound barriers around the electrical harness.

  4. Object Number: 1939829  Size: SH
  5. Press firmly in all areas in order to secure the sound barriers (1) to the floor pan.
  6. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement .
  7. Install the rear seat back. Refer to Rear Seat Back Replacement .

Sound Barrier Replacement - Rear Seat Cushion to Floorpan SWB

Removal Procedure - Up to 24 Oct 06

  1. Remove the rear seat back. Refer to Rear Seat Back Replacement .
  2. Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement .

  3. Object Number: 2004709  Size: SH
  4. Lift the rear floor pan sound barriers (1) upward and pull outward in order to remove.

Installation Procedure - Up to 24 Oct 06

    Caution: All floor pan insulator material must meet Federal Vehicle Safety Standards for flammability. Failure to do so could result in personal injury and/or vehicle damage.

    Important: Align the sound barriers in order to keep the seat belt and seat attachment areas are clear.

    Important: When installing the barriers, ensure they are aligned with the respective holes in the sheet metal.

  1. Ensure the attachment areas are clear.
  2. Remove the backing of the sound barriers.
  3. Route the sound barriers around the electrical harness.

  4. Object Number: 2004709  Size: SH
  5. Press firmly in all areas in order to secure the sound barriers (1) to the floor pan.
  6. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement .
  7. Install the rear seat back. Refer to Rear Seat Back Replacement .

Sound Barrier Replacement - Rear Seat Cushion to Floorpan Sportwagon

Removal Procedure

  1. Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement.

  2. Object Number: 2073585  Size: SH
  3. Remove the rear floorpan sound barriers (1) from the floorpan (2).

Installation Procedure


    Object Number: 2073585  Size: SH

    Caution: All floor pan insulator material must meet Federal Vehicle Safety Standards for flammability. Failure to do so could result in personal injury and/or vehicle damage.

    Important: When installing the floorpan sound barriers, aligned with the floorpan sound barriers with the respective contours on the floorpan (2).

    Important: Make sure that the floorpan sound barriers (1) bonds to the floorpan (2) adequately.

  1. Clean the contact surface area with a suitable cleaning solution and a lint free cloth to remove any adhesive or grease.
  2. Peel the backing from the floorpan sound barriers (1).
  3. Install the floorpan sound barriers (1) to the floorpan (2).
  4. Press the floorpan sound barriers (1) firmly in all areas in order to secure the sound barriers to the floorpan (2).
  5. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement.