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.
  2. Disconnect the oxygen sensor electrical connector.
  3. Disconnect the EGR valve pipe from the exhaust manifold. Refer to Secondary Air Injection Check Valve and Check Valve Pipe Replacement in Engine Controls.
  4. Remove the exhaust manifold bolts.
  5. Remove the exhaust manifold. Refer to Exhaust Manifold Removal (Left) .
  6. Clean all sealing surfaces. Refer to Exhaust Manifold Clean and Inspect .

Installation Procedure

  1. Install the exhaust manifold. Refer to Exhaust Manifold Installation (Left) .

  2. Object Number: 173206  Size: SH

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  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).

  5. Install the exhaust pipe to the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement in Engine Exhaust.
  6. Connect the oxygen sensor electrical connector.

Exhaust Manifold Replacement Right Side

Removal Procedure

  1. Remove the exhaust pipe from the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement in Engine Exhaust.
  2. Disconnect the oxygen sensor electrical connector.
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls.
  4. Remove the bolt for the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .

  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 Removal (Right) .
  2. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  3. Install the air cleaner assembly.
  4. Install the exhaust pipe to the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement in Engine Exhaust.
  5. Connect the oxygen sensor electrical connector.