LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 712 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Right (3.1 L) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Engine Electrical.
  2. Remove the air cleaner intake duct.
  3. Remove the accelerator and cruise control cables with the bracket from the throttle body.
  4. Rotate the engine for service access. Refer to ROTATING THE ENGINE FOR SERVICE ACCESS in Engine Mechanical - 3.1 L.
  5. Remove the manifold absolute pressure (MAP) sensor. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR in Engine Controls-3.1 L.
  6. Remove the ignition control module and the ignition control module bracket. Refer to IGNITION CONTROL MODULE in Engine Controls - 3.1L.
  7. Disconnect the heated oxygen (HO2S) sensor electrical connector.
  8. Remove the thermostat bypass pipe. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT in Engine Cooling.
    Fig 1: Disconnecting Heated Oxygen Sensor Electrical Connector
    G02080659Courtesy of GENERAL MOTORS CORP.
  9. Remove the exhaust crossover pipe heat shield bolts.
  10. Remove the exhaust crossover pipe heat shield.
    Fig 2: Removing Exhaust Crossover Pipe Heat Shield
    G02080660Courtesy of GENERAL MOTORS CORP.
  11. Remove the exhaust crossover pipe nuts from the right exhaust manifold.
  12. Raise and support the vehicle. Refer to JACKING AND LIFTING in General Information.
  13. Remove the catalytic converter. Refer to CATALYTIC CONVERTER REPLACEMENT (3.1 L)  or CATALYTIC CONVERTER REPLACEMENT (3.8L)  .
  14. Remove the exhaust gas recirculation (EGR) pipe from the right exhaust manifold. Refer to EGR VALVE PIPE in Engine Controls - 3.1 L.
    Fig 3: Removing Exhaust Crossover Pipe Nuts From Right Exhaust Manifold
    G02080661Courtesy of GENERAL MOTORS CORP.
  15. Remove the right exhaust manifold upper heat shield bolts.
  16. Remove the right exhaust manifold upper heat shield.
    Fig 4: Removing Right Exhaust Manifold Upper Heat Shield
    G02080662Courtesy of GENERAL MOTORS CORP.
  17. Remove the right exhaust manifold lower heat shield bolts.
  18. Remove the right exhaust manifold lower heat shield.
    Fig 5: Removing Right Exhaust Manifold Lower Heat Shield
    G02080663Courtesy of GENERAL MOTORS CORP.
  19. Remove the right exhaust manifold nuts.
  20. Remove the right exhaust manifold.
  21. Remove the right exhaust manifold gasket.
  22. Clean and inspect the right exhaust manifold. Refer to EXHAUST MANIFOLD CLEANING AND INSPECTION in Engine Mechanical - 3.1 L.
    Fig 6: Removing Right Exhaust Manifold And Gasket
    G02080664Courtesy of GENERAL MOTORS CORP.
  23. If replacing the right exhaust manifold remove the heated oxygen (HO2S) sensor. Refer to HEATED OXYGEN SENSOR in Engine Controls - 3.1 L.
    Fig 7: Removing Heated Oxygen Sensor
    G02080665Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals