GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Impala 🢒 Engine 🢒 Engine Exhaust 🢒 Catalytic Converter Heat Shield Replacement

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

    2. Notice: Refer to Catalytic Converter Movement Notice in the Preface section.

  2. Support the exhaust system.
  3. Remove the catalytic converter. Refer to Catalytic Converter Replacement .

    4. Object Number: 195267 Size: SH
  4. Remove the heated oxygen sensor (HO2S) wiring harness (3) from the catalytic converter heat shield (4).

    5. Object Number: 289490 Size: SH
  5. Remove the catalytic converter heat shield rivets.
  6. Remove the catalytic converter heat shield.

Installation Procedure

    Object Number: 289491 Size: SH
  1. Install the catalytic converter heat shield.
  2. Install the converter heat shield rivets.

    3. Object Number: 195267 Size: SH
  3. Install the heated oxygen sensor (HO2S) wiring harness (3) to the catalytic converter heat shield (4).
  4. Install the catalytic converter. Refer to Catalytic Converter Replacement .
  5. Remove the support from the exhaust system.
  6. Lower the vehicle.
  7. Inspect the exhaust system for leaks.