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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 2.0L (LUZ) Diesel) >> Repair Instructions - On Vehicle >> Positive Crankcase Ventilation Oil Separator Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: Due to a government requirement, the positive crankcase ventilation components have always to be removed and installed from or to the engine as an assembly unit.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the engine sight shield. Refer to Engine Sight Shield Replacement .
  3. Disconnect the positive crankcase ventilation heater wiring harness plug (1).
    Fig 1: Positive Crankcase Ventilation Heater Wiring Harness Plug
    GM3547177Courtesy of GENERAL MOTORS COMPANY
  4. Unclip wiring harness retainer clip (2).
  5. Squeeze the quick connector (arrow) and disconnect the positive crankcase ventilation heater from the air cleaner outlet duct.
  6. Remove the 2 positive crankcase ventilation tube bolts (1).
    Fig 2: Positive Crankcase Ventilation Tube Bolts
    GM3547178Courtesy of GENERAL MOTORS COMPANY
  7. Unclip wiring harness from the positive crankcase ventilation tube (2).
  8. Remove the positive crankcase ventilation oil separator bolt (1).
    Fig 3: Positive Crankcase Ventilation Oil Separator Bolt
    GM3547175Courtesy of GENERAL MOTORS COMPANY
  9. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  10. Remove the starter. Refer to Starter Replacement (2.0L Diesel LUZ) .
  11. Clip out the wiring harness retainer from the PCV oil separator.
  12. Remove and DISCARD the 2 positive crankcase ventilation oil separator bolts (3).
    NOTE: Use a small rotary cutter tool to cut slots into the heads of the bolts. Use an impact driver or similar device to break the initial resistance required to loosen the bolts.
  13. Lower the vehicle.
  14. Remove the positive crankcase ventilation oil separator assembly (2) in top direction.
  15. Remove and DISCARD the seal rings (4, 5).
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