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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical - 1.8L (LUW And LWE)) >> Repair Instructions - On Vehicle >> Intake Manifold Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
WARNING: Refer to Gasoline/Gasoline Vapors Warning .
WARNING: Refer to Safety Goggles and Fuel Warning .
WARNING:

In order to reduce the risk of fire and personal injury observe the following items:

  • Replace all nylon fuel pipes that are nicked, scratched or damaged during installation, do not attempt to repair the sections of the nylon fuel pipes
  • Do not hammer directly on the fuel harness body clips when installing new fuel pipes. Damage to the nylon pipes may result in a fuel leak.
  • Always cover nylon vapor pipes with a wet towel before using a torch near them. Also, never expose the vehicle to temperatures higher than 115°C (239°F) for more than one hour or more than 90°C (194°F) for any extended period.
  • Apply a few drops of clean engine oil to the male pipe ends before connecting fuel pipe fittings. This will ensure proper reconnection and prevent a possible fuel leak. (During normal operation, the O-rings located in the female connector will swell and may prevent proper reconnection if not lubricated.)
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Place a drain pan underneath the vehicle.
  4. Disconnect the oxygen wiring harness (3).
    Fig 1: Identifying Wiring Harness Bracket, Intake Manifold And Oxygen Wiring Harness
    GM2512596Courtesy of GENERAL MOTORS COMPANY
  5. Remove the wiring harness bracket (1) from the intake manifold (2).
  6. Remove the 2 intake manifold brace bolts (2, 3).
    Fig 2: Intake Manifold Bracket
    GM2026538Courtesy of GENERAL MOTORS COMPANY
  7. Remove the intake manifold brace (1).
  8. Lower the vehicle.
  9. Remove the evaporative emission canister purge solenoid valve. Refer to Evaporative Emission Canister Purge Solenoid Valve Replacement .
  10. Remove the 2 evaporative emission canister purge solenoid valve bracket bolts (2).
    Fig 3: Intake Manifold, Evaporative Emission Canister Purge Solenoid Valve Bracket And Bolts
    GM2373076Courtesy of GENERAL MOTORS COMPANY
  11. Remove the evaporative emission canister purge solenoid valve bracket (1) from the intake manifold (3).
  12. Release the fuel pressure using the test connection with EN-34730-91  gauge.
  13. Unclip the fuel feed pipe (2) from the fuel feed pipe clip (3).
    Fig 4: Fuel Feed Pipe
    GM2372979Courtesy of GENERAL MOTORS COMPANY
  14. Release the fuel feed pipe (2) from the multiport fuel injection fuel rail (1) with the CH-41769  tool set and put the fuel feed pipe aside.
  15. Close the fuel feed pipe with a suitable cap.
  16. Remove the positive crankcase ventilation tube (1) from throttle body (3) and the camshaft cover (2).
    Fig 5: Throttle Body And Positive Crankcase Ventilation Tube
    GM2189157Courtesy of GENERAL MOTORS COMPANY
  17. Disconnect the manifold absolute pressure sensor electrical connector (5).
    Fig 6: Throttle Body, Throttle Body Heater Inlet Hose And Throttle Body Heater Outlet Hose
    GM2189158Courtesy of GENERAL MOTORS COMPANY
  18. Remove the clamp (2) and remove the throttle body heater inlet hose (1) from throttle body (3).
  19. Disconnect the throttle body heater outlet hose (4) from the throttle body (3).
  20. Unclip the throttle body heater inlet hose (1) and the throttle body heater outlet hose (4) from the intake manifold.
  21. Remove the throttle body assembly. Refer to Throttle Body Assembly Replacement .
  22. Disconnect the electrical connector (4) from the Intake manifold tuning valve actuator (5).
    Fig 7: Identifying Electrical Connector, Engine Wiring Harness Bracket Bolts And Conduit
    GM4290305Courtesy of GENERAL MOTORS COMPANY
  23. Remove the 2 engine wiring harness bracket bolts (3).
  24. Lay the engine wiring harness conduit (1) along with the engine wiring harness bracket (2) aside.
  25. Disconnect the 4 injector electrical connectors (1) from the fuel injectors.
    Fig 8: Injector Electrical Connectors
    GM3352041Courtesy of GENERAL MOTORS COMPANY
  26. Remove the 2 multiport fuel injection fuel rail bolts (1).
    Fig 9: Intake Manifold, Multiport Fuel Injection Fuel Rail, Fuel Injectors, Seals And Bolts
    GM2373077Courtesy of GENERAL MOTORS COMPANY
  27. Remove the multiport fuel injection fuel rail (2) and the fuel injectors (3) from the intake manifold (5).
  28. Remove the 4 multiport fuel injector seals (4).
  29. Disconnect the booster vacuum pipe (1) from the intake manifold.
    Fig 10: View Of Brake Servo Vacuum Line
    GM1944890Courtesy of GENERAL MOTORS COMPANY
  30. Remove the 7 intake manifold bolts (1).
    Fig 11: Intake Manifold And Bolts
    GM2026541Courtesy of GENERAL MOTORS COMPANY
  31. Remove the intake manifold (2).
  32. Remove the intake manifold gaskets (1, 3) from the intake manifold (2).
    Fig 12: Intake Manifold, Seal And Throttle Body Seal
    GM2189145Courtesy of GENERAL MOTORS COMPANY
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