GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Cobalt 🢒 Engine 🢒 Engine Mechanical - 2.0L 🢒 Intake Manifold Removal

    Object Number: 2048166 Size: SH

    Notice: Never attempt to remove the intake manifold from a hot engine, allow the engine to cool to ambient temperature. The intake manifold is made of a composite plastic and can be damaged if it is removed when the engine is hot.

  1. If the engine is equipped with a charger AIR bypass valve tank assembly, complete the following procedure:

    2.         Important: The charger AIR bypass tube assembly connected from the charger AIR bypass valve solenoid to the charger AIR bypass valve tank assembly is permanently attached to the tank assembly. Do not attempt to disconnect the charger AIR bypass tube assembly at the charger AIR bypass valve tank assembly.

    1.1. Disconnect the charger AIR bypass tube with the retaining clip from the charger AIR bypass valve tank assembly.
    1.2. Disconnect the remaining charger AIR bypass tubes at the turbocharger and vehicle.
    1.3. Remove the charger AIR bypass valve solenoid bolts.
    1.4. Remove the charger AIR bypass valve solenoid.

    Object Number: 2045492 Size: SH
  2. If the engine is equipped with a charger AIR bypass valve tank assembly, complete the following procedure:
    3. 2.1. Disconnect the charger AIR bypass tube assembly from the intake manifold.
    2.2. Remove the charger AIR bypass valve tank assembly nut.

            Important: The charger AIR bypass bolt is captured on the bracket and should not be removed from the bracket. Loosen the bolt only until it is no longer attached to the block when removing the charger AIR bypass valve tank assembly.

    2.3. Loosen the charger AIR bypass valve tank assembly bolt.
    2.4. Remove the charger AIR bypass valve tank assembly.

    Object Number: 1769657 Size: SH

    Notice: Never attempt to remove the intake manifold from a hot engine, allow the engine to cool to ambient temperature. The intake manifold is made of a composite plastic and can be damaged if it is removed when the engine is hot.

  3. If the engine is not equipped with a charger AIR bypass valve tank assembly, complete the following procedure:
    4. 3.1. Disconnect the charger AIR bypass valve solenoid tubes.
    3.2. Remove the charger AIR bypass valve solenoid bolts.
    3.3. Remove the charger AIR bypass valve solenoid with tubes.

    Object Number: 1769663 Size: SH

    Caution: Fuel that flows out at high pressure can cause serious injury to the skin and eyes. ALWAYS depressurize the fuel system before removing components that are under high fuel pressure.

  4. Loosen and disconnect the fuel feed line tube nut.
  5. Remove the fuel feed line bolts.
  6. Remove the fuel feed line.
  7. Inspect the fuel feed line nut for damaged threads.
  8. Inspect the fuel feed line sealing bail for damage or debris.
  9. Replace the fuel feed line if any damage is found.

    10. Object Number: 1769666 Size: SH
  10. Remove the high pressure fuel pump cover bolts.
  11. Remove the high pressure fuel pump cover.
  12. Remove the high pressure fuel pump noise insulator.

    13. Object Number: 1769706 Size: SH
  13. Remove the throttle body bolts.
  14. Remove the throttle body.

    15. Object Number: 1769715 Size: SH
  15. Disconnect the rear knock sensor from the intake manifold brace.
  16. Remove the intake manifold brace bolt.
  17. Remove the intake manifold brace.

    18. Object Number: 1769718 Size: SH
  18. Remove the intake manifold bolts and nuts.
  19. Remove the intake manifold.
  20. Remove the intake manifold gasket.