GM Service Manual Online
For 1990-2009 cars only

Catalytic Converter Heat Shield Replacement L36

Removal Procedure

Caution: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

Caution: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.

  1. Remove the exhaust system. Refer to Exhaust System Replacement .

  2. Object Number: 689659  Size: SH

    Caution: Eye protection must be worn when drilling rivets to reduce the chance of personal injury.

  3. Drill through the center of the heat shield rivets.
  4. Remove the heat shield (2) from the floor panel in the following order:
  5. 3.1. Pull downward on the heat shield (2) in order to disengage from the retaining stud (1).
    3.2. Slide the heat shield (2) to the left, out from under the oxygen sensor wiring harness heat shield.

Installation Procedure


    Object Number: 689659  Size: SH
  1. Position the heat shield (2) to the floor panel in the following order:
  2. 1.1. Slide the heat shield (2) to the right, under the oxygen sensor wiring harness heat shield.
    1.2. Push the heat shield (2) upward, over the retaining stud (1).
    1.3. Align the holes in the heat shield (2) with the holes in the floor panel.
  3. Using a rivet gun, fasten both the oxygen sensor wiring harness heat shield and the catalytic converter heat shield (2) to the floor panel with a single rivet (3).
  4. Install the remaining rivets.
  5. Install the exhaust system. Refer to Exhaust System Replacement .