GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement Left Side

Removal Procedure


    Object Number: 42940  Size: SH
  1. Remove the exhaust pipe from the exhaust manifold. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  2. Disconnect the oxygen sensor electrical connector.

  3. Object Number: 173206  Size: SH
  4. Disconnect the EGR valve pipe from the exhaust manifold.

  5. Object Number: 176061  Size: SH
  6. Remove the exhaust manifold bolts.
  7. Remove the exhaust manifold. Refer to Exhaust Manifold Removal (Left) .
  8. Clean all sealing surfaces. Refer to Exhaust Manifold Clean and Inspect .

Installation Procedure


    Object Number: 176061  Size: SH
  1. Install the exhaust manifold. Refer to Exhaust Manifold Installation (Right) .

  2. Object Number: 173206  Size: SH
  3. Connect the EGR valve pipe to the exhaust manifold.
  4. Tighten
    Tighten the EGR valve pipe nut to 30 N·m (22 lb ft).


    Object Number: 42940  Size: SH
  5. Install the exhaust pipe to the exhaust manifold. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  6. Connect the oxygen sensor electrical connector.

Exhaust Manifold Replacement Right Side

Removal Procedure


    Object Number: 42940  Size: SH
  1. Remove the exhaust pipe from the exhaust manifold. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  2. Disconnect the oxygen sensor electrical connector.

  3. Object Number: 173203  Size: SH
  4. Remove the bolt for the oil level indicator tube.

  5. Object Number: 69032  Size: SH
  6. Remove the exhaust manifold bolts.
  7. Remove the exhaust manifold. Refer to Exhaust Manifold Removal (Right) .
  8. Clean all sealing surfaces. Refer to Exhaust Manifold Clean and Inspect .

Installation Procedure


    Object Number: 69032  Size: SH
  1. Install the exhaust manifold. Refer to Exhaust Manifold Installation (Right) .

  2. Object Number: 173203  Size: SH
  3. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Installation .

  4. Object Number: 42940  Size: SH
  5. Install the exhaust pipe to the exhaust manifold. Refer to Exhaust Pipe Replacement in Engine Exhaust.
  6. Connect the oxygen sensor electrical connector.