GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 Torrent 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Exhaust Manifold Replacement - Right Side

Removal Procedure
  1. Disconnect the oxygen sensor electrical connector.
  2. Remove the 3 nuts attaching exhaust crossover pipe to the right exhaust manifold. Refer to Exhaust Crossover Pipe Replacement .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

    4. Object Number: 1370519 Size: SH
  4. Remove the nuts (3) securing the catalytic converter (4) to the exhaust manifold and position catalytic converter out of the way. Refer to Catalytic Converter Replacement .

    5. Object Number: 1087647 Size: SH
  5. Remove the exhaust manifold heat shield bolts (3).
  6. Remove the exhaust manifold heat shields (1, 2).

    7. Object Number: 1087654 Size: SH
  7. Remove the exhaust manifold nuts (3).
  8. Remove the exhaust manifold (2).
  9. Remove the exhaust manifold gasket (1).
  10. If you are REPLACING the engine right side exhaust manifold, remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor 1 Replacement .

    11. Object Number: 1087658 Size: SH
  11. If necessary, remove the exhaust manifold studs.
  12. Clean the exhaust manifold and the cylinder head exhaust manifold sealing surfaces.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1087658 Size: SH
  1. If previously removed, install the exhaust manifold studs.

    2. Tighten
    Tighten the studs to 18 N·m (13 lb ft).

  2. If removed, install the HO2S. Refer to Heated Oxygen Sensor 1 Replacement .

    3. Object Number: 1087654 Size: SH
  3. Install the exhaust manifold gasket (1).
  4. Install the exhaust manifold (2).
  5. Install the exhaust manifold nuts (3).

    6. Tighten
    Tighten the nuts to 16 N·m (12 lb ft).


    Object Number: 1087647 Size: SH
  6. Install the exhaust manifold upper heat shield (1).
  7. Install the exhaust manifold lower heat shield (2).
  8. Install the exhaust manifold heat shield bolts (3).

    9. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1370519 Size: SH
  9. Install the catalytic converter (4) to the exhaust manifold and install the nuts (3). Refer to Catalytic Converter Replacement .
  10. Lower the vehicle.
  11. Install the exhaust crossover pipe nuts to the right side exhaust manifold. Refer to Exhaust Crossover Pipe Replacement .
  12. Connect the HO2S electrical connector.