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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 748 (Engine Mechanical - 3.1L (On-Vehicle)) >> Repair Instructions >> Intake Manifold Replacement - Upper >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the top half of the air cleaner assembly.
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  3. Remove the brake vacuum pipe at the plenum.
  4. Disconnect the fuel pressure regulator vacuum hose (1) from the fuel pressure regulator (3) and the PCV valve (2).
  5. Remove the electronic ignition coil and module assembly. Refer to IGNITION CONTROL MODULE in Engine Controls.
  6. Fig 1: Removing Electronic Ignition Coil & Module Assembly
    G01810899Courtesy of GENERAL MOTORS CORP.
  7. Remove throttle cable bracket with cables.
  8. Remove the EVAP canister purge solenoid.
    Fig 2: Removing EVAP Canister Purge Solenoid
    G01810900Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the throttle position (TP) sensor.
    Fig 3: Disconnecting Throttle Position Sensor
    G01810901Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the idle air control (IAC) sensor.
  11. Disconnect the fuel injector harness.
    Fig 4: Disconnecting Idle Air Control Sensor
    G01810902Courtesy of GENERAL MOTORS CORP.
  12. Remove the manifold absolute pressure (MAP) sensor (1). Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR in Engine Controls.
  13. Fig 5: Removing Manifold Absolute Pressure Sensor
    G01810903Courtesy of GENERAL MOTORS CORP.
  14. Remove EGR pipe.
  15. Remove inlet and outlet hoses from throttle body (1).
    Fig 6: Removing Throttle Body Inlet & Outlet Hoses
    G01810904Courtesy of GENERAL MOTORS CORP.
  16. Remove the upper intake manifold bolts.
    Fig 7: Removing Upper Intake Manifold Bolts
    G01810905Courtesy of GENERAL MOTORS CORP.
  17. Remove the upper intake manifold and gaskets.
  18. Clean the gasket surfaces.
    Fig 8: Removing Upper Intake Manifold & Gasket
    G01810906Courtesy of GENERAL MOTORS CORP.