GM Service Manual Online
For 1990-2009 cars only

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. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 689658  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.
  5. Remove the oxygen sensor retainer (1) from the heat shield (2).

Installation Procedure


    Object Number: 689658  Size: SH
  1. Install the oxygen sensor retainer (1) to the heat shield.
  2. Position the heat shield (2) to the floor panel, aligning the holes.
  3. Using a rivet gun, fasten both the oxygen sensor wiring harness heat shield (2) and the catalytic converter heat shield to the floor panel with a single rivet (3).
  4. Install the remaining rivets.
  5. Lower the vehicle.