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Home >> Chevrolet >> 2002 >> Impala Police >> Repair and Diagnosis >> External Pages >> Different car >> Section 567 (Engine Mechanical - 3.4L V6 - VIN (E) (La1)) >> Repair Instructions >> On-Vehicle Repair instructions >> Intake Manifold Replacement - Lower >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Monte Carlo and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Remove the upper intake manifold. Refer to Intake Manifold Replacement - Upper .
  3. Remove the left valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left .
  4. Remove the right valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Right .
    5. Fig 1: ECT Sensor Electrical Connector
    GM190517Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
    6. Fig 2: Fuel Injector & MAP Sensor Wiring Harnesses
    GM190518Courtesy of GENERAL MOTORS CORP.
  6. Disconnect and remove the fuel injector and the manifold absolute pressure (MAP) sensor wiring harnesses.
    7. Fig 3: Fuel Pipe Clip & Bolt
    GM190512Courtesy of GENERAL MOTORS CORP.
  7. Remove the fuel pipe clip bolt.
    8. Fig 4: Fuel Pipe Clip
    GM190511Courtesy of GENERAL MOTORS CORP.
  8. Remove the fuel pipe clip.
    9. Fig 5: Fuel Injector Rail
    GM190516Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel injector rail. Refer to FUEL RAIL & INJECTORS .
  10. Remove the power steering pump from the front engine cover and reposition. Refer to Power Steering Pump Replacement (3.4L) in Power Steering System.
    11. Fig 6: Heater Inlet Pipe & Nut
    GM190515Courtesy of GENERAL MOTORS CORP.
  11. Remove the heater inlet pipe with the heater hose from the lower intake manifold and reposition the pipe.
  12. Remove the radiator inlet hose from the engine. Refer to Radiator Hose Replacement - Inlet (3.4L) in Engine Cooling.
    13. Fig 7: Thermostat Bypass Hose At Thermostat Bypass Pipe & Lower Intake Manifold Pipe
    GM190522Courtesy of GENERAL MOTORS CORP.
  13. Remove the thermostat bypass hose from the thermostat bypass pipe and the lower intake manifold pipe.
    14. Fig 8: View Of Lower Intake Manifold & Bolts
    GM54281Courtesy of GENERAL MOTORS CORP.
  14. Remove the lower intake manifold bolts.
  15. Remove the lower intake manifold.
  16. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
    17. Fig 9: Removing Lower Intake Manifold Gaskets & RTV Sealant
    GM61820Courtesy of GENERAL MOTORS CORP.
  17. Remove the lower intake manifold gaskets and seals.
  18. Clean the lower intake manifold gasket mating surfaces.
  19. Remove and clean all the RTV sealant from the lower intake manifold and the engine block (1).
    20. Fig 10: ECT Sensor
    GM190519Courtesy of GENERAL MOTORS CORP.
  20. Remove the ECT sensor.
    21. Fig 11: Water Outlet & Bolts
    GM190520Courtesy of GENERAL MOTORS CORP.
  21. Remove the water outlet bolts.
  22. Remove the water outlet.
    23. Fig 12: Thermostat
    GM190521Courtesy of GENERAL MOTORS CORP.
  23. Remove the thermostat.
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