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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 3.6L (2 Of 5)) >> On-Vehicle Repair Information (1 Of 2) >> Lower Intake Manifold Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Purge Valve Solenoid Electrical Connector
    GM1394073Courtesy of GENERAL MOTORS CORP.
  1. Turn the ignition OFF.
  2. Remove the air inlet duct. Refer to Air Cleaner Inlet Duct Replacement .
  3. Remove the fuel pressure and evaporative emission (EVAP) hoses from the engine. Refer to Metal Collar Quick Connect Fitting Service and Plastic Collar Quick Connect Fitting Service .
  4. Disconnect the BARO sensor electrical connector.
    5. IMPORTANT: Do not disconnect the engine control module (ECM) electrical connectors.
  5. Remove the ECM bracket with the ECM and reposition aside. Refer to Engine Control Module Replacement .
  6. Disconnect the purge solenoid electrical connector.
  7. Disconnect the purge solenoid electrical connector.
    8. Fig 2: Identifying Wiring Harness Bracket Bolts On Right Side Of Intake Manifold
    GM1394052Courtesy of GENERAL MOTORS CORP.
  8. Remove the wiring harness from the right side of the intake manifold.
    9. Fig 3: View Of Fuel Injector Electrical Connector
    GM1394055Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the fuel injector electrical connector.
    10. Fig 4: Identifying Throttle Body Electrical Connector
    GM1394050Courtesy of GENERAL MOTORS CORP.
  10. Remove the throttle body electrical connector.
  11. Remove the brake booster vacuum hose and check valve from the brake booster.
    12. Fig 5: Locating PCV Dirty Air Tube
    GM1394081Courtesy of GENERAL MOTORS CORP.
  12. Remove the positive crankcase ventilation (PCV) hose from the intake manifold.
    13. Fig 6: Identifying Intake Manifold Bolts
    GM1401464Courtesy of GENERAL MOTORS CORP.
  13. Remove the intake manifold bolts (1-6).
    14. Fig 7: View Of Intake Manifold
    GM1394084Courtesy of GENERAL MOTORS CORP.
  14. Remove the intake manifold.
  15. Disassemble the intake manifold as necessary. Refer to Intake Manifold Disassemble .
  16. Clean and inspect the intake manifold and the sealing surfaces. Refer to Intake Manifold Cleaning and Inspection .
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