GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2000 🢒 L300/LW300 🢒 Engine 🢒 Engine Mechanical - 3.0L (L81) 🢒 Crankcase Vent Housing Replacement

Removal Procedure

    Object Number: 894285 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the intake hose assembly.

    3. Object Number: 896465 Size: SH
  3. Remove the bank 1 (rear) intake runner. Intake Plenum Switchover Valve Replacement

    4. Object Number: 894680 Size: SH
  4. Disconnect the throttle body electrical connection.

    5. Object Number: 896429 Size: SH
  5. Disconnect the electrical connection and remove the vacuum hoses from the intake plenum switch-over valve solenoid.
  6. Remove the vacuum hose from the fuel pressure regulator.

    7. Object Number: 896435 Size: SH
  7. Remove the front intake plenum-to-runner hose clamp and plenum bolts.
  8. Remove the EGR manifold bolts.
  9. Lift the plenum and remove the throttle body heater hoses.

    10. Notice: Refer to Intake Manifold Spacer Damage Notice in the Preface section.

  10. Remove the intake plenum.

    11. Object Number: 894744 Size: SH
  11. Disconnect the rear coil connection.
  12. Disconnect the oil separator hose, vacuum line and remove the coolant line bracket from the crankcase vent housing.
  13. Remove the crankcase vent housing flange bolts and remove the housing.

    14. Important: To ensure the positive sealing of flange sealant, thoroughly clean all mating surfaces.

  14. Clean the ventilation housing and sealing flange on the engine block.

    15. Important: Located within the ventilation housing is a one-way reed valve. The reed valve maintains a positive crankcase pressure.

  15. Inspect the rubber reed valve for cracks and proper function. Replace the reed valve, if defective.

Installation Procedure

    Object Number: 894744 Size: SH
  1. Apply sealing compound LOCTITE® 518, or equivalent, to the sealing surfaces.
  2. Install the ventilation housing to the engine block.
  3. Install the ventilation housing bolts.

    4. Tighten
    Tighten the ventilation housing bolts to 8 N·m (71 lb in).

  4. Connect the oil separator hose, vacuum line and install the coolant line bracket to the vent housing.
  5. Connect the rear coil electrical connection.

    6. Object Number: 896435 Size: SH
  6. Remove the tape from the intake ports and install the intake plenum into the front intake runner.
  7. Lift the intake plenum and install the throttle body heater hoses to the underside of the throttle body.
  8. Lower the intake plenum and install the plenum and EGR manifold bolts.

    9. Tighten

        • Tighten the intake plenum bolts to 8 N·m (71 lb in).
        • Tighten the EGR manifold bolt to 8 N·m (71 lb in).

    Object Number: 896429 Size: SH
  9. Install the fuel pressure regulator vacuum hose.
  10. Connect the intake plenum switch-over valve solenoid electrical connection and vacuum hoses.

    11. Object Number: 894680 Size: SH
  11. Connect the throttle body electrical connection.

    12. Object Number: 896465 Size: SH
  12. Install the bank 1 (rear) intake runner. Intake Plenum Switchover Valve Replacement .

    13. Object Number: 894285 Size: SH
  13. Install the intake hose assembly.
  14. Connect the negative battery cable.

    15. Tighten
    Tighten the battery terminal bolts to 17 N·m (13 lb ft).