GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Refer to Exhaust Service Caution in the Preface section.

Caution: Refer to Protective Goggles and Glove Caution in the Preface section.


    Object Number: 1861575  Size: SH
  1. Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 .
  2. Remove the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement .
  3. Remove the exhaust manifold heat shield bolts (1).
  4. Remove the exhaust manifold heat shield.

Installation Procedure


    Object Number: 1861575  Size: SH
  1. Install the exhaust manifold heat shield.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the exhaust manifold heat shield bolts (1).
  4. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  5. Install the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement .
  6. Install the HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 .