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Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Mechanical - 3.2L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankcase Vent Housing Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the following components according to the RPO code:
  2. Fig 1: Locating Coil Pack Electrical Connector
    GM785822Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the electrical connector (2) from the coil pack (1).
  4. Fig 2: Locating Heated Oxygen Sensor Connector & Bracket
    GM785788Courtesy of GENERAL MOTORS CORP.
  5. Remove the heated oxygen sensor connector (1) from the bracket (3).
  6. Remove the bolt securing the surge tank outlet pipe to the vent housing-LHD ONLY.
  7. Fig 3: Identifying Components Connected To Crankcase Vent Housing
    GM821095Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the following from the crankcase vent housing (4):
    • The crankcase ventilation fresh air hose (2)
    • The crankcase ventilation dirty air hose (3)
    • The engine wiring harness push retainer
  9. Remove the bolt (6) securing the following to the crankcase vent housing (4):
    • The heated oxygen sensor connector bracket (5)
    • The evaporative emission (EVAP) canister purge valve bracket (1)
  10. Fig 4: Removing & Installing Crankcase Vent Housing Bolts
    GM821097Courtesy of GENERAL MOTORS CORP.
  11. Remove the crankcase vent housing bolts.
  12. Remove the crankcase vent housing from the engine block.
  13. Plug the open ports to the crankcase, in order to prevent foreign objects from entering the engine.
  14. Clean and inspect the surface of the engine block and crankcase vent housing.