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Home >> Chevrolet >> 2004 >> Malibu Maxx >> Repair and Diagnosis >> External Pages >> Different car >> Section 115 (Engine Mechanical - 3.6L (Ly7) (Repair Instructions -- 1 Of 5)) >> On-Vehicle Repair Instructions - Part 1 >> Intake Manifold Replacement - Lower >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition OFF.
  2. Remove the air inlet duct. Refer to Air Cleaner Intake Duct Replacement in Engine Controls - 3.6L (LY7).
  3. Remove the fuel pressure and evaporative emission (EVAP) hoses from the engine. Refer to Quick Connect Fitting(s) Service (Metal Collar) and Quick Connect Fitting(s) Service (Plastic Collar) in Engine Controls - 3.6L (LY7).
  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 (ECM) Replacement in Engine Controls - 3.6L (LY7).
    6. Fig 1: Purge Solenoid Electrical Connector
    GM1394073Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the purge solenoid electrical connector.
    7. Fig 2: Identifying Wiring Harness Bracket Bolts On Right Side Of Intake Manifold
    GM1394052Courtesy of GENERAL MOTORS CORP.
  7. Remove the wiring harness from the right side of the intake manifold.
    8. Fig 3: View Of Fuel Injector Electrical Connector
    GM1394055Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the fuel injector electrical connector.
    9. Fig 4: Identifying Throttle Body Electrical Connector
    GM1394050Courtesy of GENERAL MOTORS CORP.
  9. Remove the throttle body electrical connector.
  10. Remove the brake booster vacuum hose and check valve from the brake booster.
    11. Fig 5: Locating PCV Dirty Air Tube
    GM1394081Courtesy of GENERAL MOTORS CORP.
  11. Remove the positive crankcase ventilation (PCV) hose from the intake manifold.
    12. Fig 6: Identifying Intake Manifold Bolts
    GM1401464Courtesy of GENERAL MOTORS CORP.
  12. Remove the intake manifold bolts (1-6).
    13. Fig 7: View Of Intake Manifold
    GM1394084Courtesy of GENERAL MOTORS CORP.
  13. Remove the intake manifold.
  14. Disassemble the intake manifold as necessary. Refer to Intake Manifold Disassemble .
  15. Clean and inspect the intake manifold and the sealing surfaces. Refer to Intake Manifold Cleaning and Inspection .
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