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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Engine Mechanical) >> Repair Instructions >> On-Vehicle Repair Instructions >> Intake Manifold Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: The intake manifold, throttle body, fuel rail, and injectors may be removed as an assembly. If not servicing the individual components, remove the manifold as a complete assembly.
  1. Remove the throttle body. Refer to Throttle Body Assembly Replacement .
  2. Remove the fuel injectors. Refer to Fuel Injector Replacement .
    3. Fig 1: View Of MAP Sensor & Knock Sensor Electrical Connectors
    GM679510Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the following electrical connectors:
    • Manifold absolute pressure (MAP) sensor (1)
    • Knock sensor (2)
  4. Remove the knock sensor harness electrical connector from the intake manifold.
  5. Set the electrical harness aside.
    6. Fig 2: View Of Manifold Absolute Pressure (MAP) Sensor
    GM863068Courtesy of GENERAL MOTORS CORP.
  6. Remove the MAP sensor (1) from the intake manifold.
    7. Fig 3: View Of EVAP Purge Solenoid Vent Tube
    GM372717Courtesy of GENERAL MOTORS CORP.
  7. Remove the evaporative emission (EVAP) purge solenoid vent tube by performing the following:
    1. Remove the EVAP tube end (2) from the solenoid (1).
    2. Squeeze the EVAP pipe quick connect fitting (3) retainer together.
    3. Remove the EVAP tube end (3) from the vapor pipe.
    8. Fig 4: View Of EVAP Purge Solenoid Bolt, Solenoid & Isolator
    GM389993Courtesy of GENERAL MOTORS CORP.
  8. Remove the EVAP purge solenoid bolt (2), solenoid (3), and isolator (1) from the intake manifold.
    9. Fig 5: Intake Manifold
    GM863069Courtesy of GENERAL MOTORS CORP.
  9. Remove the intake manifold bolts.
  10. Remove the intake manifold.
    11. Fig 6: View Of Intake Manifold Gasket
    GM492770Courtesy of GENERAL MOTORS CORP.
  11. Remove the intake manifold gaskets (1) from the intake manifold.
  12. Discard the old intake manifold gaskets.
  13. Clean and inspect the intake manifold. Refer to Intake Manifold Cleaning and Inspection .
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