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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Engine Mechanical - 4.8L, 5.3L, And 6.0L (2 Of 4)) >> On-Vehicle REPARI Instructions >> Intake Manifold Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    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 electronic temperature control (ETC) connector
    GM1809532Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the electronic temperature control (ETC) connector.
    7. Fig 3: View Of PCV Hose
    GM1201537Courtesy of GENERAL MOTORS CORP.
  7. Remove the positive crankcase ventilation (PCV) hose.
    8. Fig 4: View Of Intake Manifold MAP Sensor
    GM260159Courtesy of GENERAL MOTORS CORP.
  8. Remove the MAP sensor (1) from the intake manifold.
  9. Remove the engine coolant air bleed clamp and hose from the throttle body, if applicable.
    10. Fig 5: View Of EVAP Purge Solenoid Vent Tube
    GM372717Courtesy of GENERAL MOTORS CORP.
  10. 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.
    11. Fig 6: View Of EVAP Purge Solenoid Bolt, Solenoid & Isolator
    GM389993Courtesy of GENERAL MOTORS CORP.
  11. Remove the EVAP purge solenoid bolt (2), solenoid (3), and isolator (1) from the intake manifold.
    12. Fig 7: View Of Intake Manifold & Bolts
    GM1201541Courtesy of GENERAL MOTORS CORP.
  12. Remove the intake manifold bolts.
  13. Remove the intake manifold.
    14. Fig 8: View Of Intake Manifold Gasket
    GM492770Courtesy of GENERAL MOTORS CORP.
  14. Remove the intake manifold gaskets (1) from the intake manifold.
  15. Discard the old intake manifold gaskets.
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