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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1679 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Right (3.1L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. If replacing the right exhaust manifold install the heated oxygen (HO2S) sensor. Refer to HEATED OXYGEN SENSOR in Removal & Installation.
    Fig 1: Installing Heated Oxygen Sensor (HO2S)
    G01969151Courtesy of GENERAL MOTORS CORP.
  2. Install the right exhaust manifold gasket.
  3. Install the right exhaust manifold.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  4. Install the right exhaust manifold nuts.

    Tighten 

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

    Fig 2: Installing Right Exhaust Manifold & Nuts
    G01969152Courtesy of GENERAL MOTORS CORP.
  5. Install the right exhaust manifold lower heat shield.
  6. Install the right exhaust manifold lower heat shield bolts.

    Tighten 

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

    Fig 3: Installing Right Exhaust Manifold Lower Heat Shield & Bolts
    G01969153Courtesy of GENERAL MOTORS CORP.
  7. Install the right exhaust manifold upper heat shield.
  8. Install the right exhaust manifold upper heat shield bolts.

    Tighten 

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

    Fig 4: Installing Right Exhaust Manifold Upper Heat Shield & Bolts
    G01969154Courtesy of GENERAL MOTORS CORP.
  9. Install the EGR pipe to the right exhaust manifold. Refer to EGR VALVE PIPE
  10. Install the catalytic converter. Refer to CATALYTIC CONVERTER REPLACEMENT (3.1L)  or CATALYTIC CONVERTER REPLACEMENT (3.8L)  .
  11. Lower the vehicle.
  12. Install the exhaust crossover pipe nuts to the right exhaust manifold.

    Tighten 

    Tighten the nuts to 25 N.m (18 lb ft).

    Fig 5: Installing Exhaust Crossover Pipe & Nuts
    G01969155Courtesy of GENERAL MOTORS CORP.
  13. Install the exhaust crossover pipe heat shield.
  14. Install the exhaust crossover pipe heat shield bolts.

    Tighten 

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

    Fig 6: Installing Exhaust Crossover Pipe Heat Shield & Bolts
    G01969156Courtesy of GENERAL MOTORS CORP.
  15. Install the thermostat bypass pipe. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT in Engine Cooling.
  16. Connect the heated oxygen (HO2S) sensor electrical connector.
    Fig 7: Connecting Heated Oxygen (HO2S) Sensor Electrical Connector
    G01969157Courtesy of GENERAL MOTORS CORP.
  17. Install the ignition control module and the ignition control module bracket. Refer to IGNITION CONTROL MODULE
  18. Install the MAP sensor. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR in Removal & Installation.
  19. Return the engine to the original position.
  20. Install the engine mount struts. Refer to ENGINE MOUNT STRUT REPLACEMENT in Engine Mechanical - 3.1L.
  21. Install the accelerator and cruise control cables with the bracket to the throttle body.
  22. Install the air cleaner intake duct. Refer to AIR CLEANER INTAKE DUCT in Removal & Installation - A/T.
  23. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Battery.