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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 3.4L >> Repair Instructions >> On-Vehicle Repair Instructions >> Engine Front Cover Replacement >> Removal Procedure

Removal Procedure

  1. Drain the engine cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  2. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  3. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  4. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  5. Remove the power steering pump with lines. Move the power steering pump aside. Refer to Power Steering Pump Replacement (LA1 ) in Power Steering System.
  6. Disconnect the thermostat bypass pipe from the engine front cover. Refer to Thermostat Bypass Pipes Replacement in Engine Cooling.
  7. Disconnect the radiator outlet hose from the front cover. Refer to Radiator Hose Replacement - Outlet (LA1) in Engine Cooling.
  8. Remove the coolant pump pulley. Refer to Water Pump Replacement (LA1) in Engine Cooling.
    9. Fig 1: View Of Crankshaft Position Sensor Wiring Harness Bracket
    GM190535Courtesy of GENERAL MOTORS CORP.
  9. Remove the crankshaft position sensor wiring harness bracket from the engine front cover.
  10. Remove oil pan. Refer to Oil Pan Replacement .
    11. Fig 2: Identifying Engine Front Cover Bolts
    GM95865Courtesy of GENERAL MOTORS CORP.
  11. Remove the engine front cover bolts (1,2,3).
  12. Remove the engine front cover.
  13. Remove the engine front cover gasket.
  14. Clean the engine front cover and engine block gasket sealing surfaces. Refer to Engine Front Cover Cleaning and Inspection  in the Engine Unit Repair Manual.
  15. Inspect the engine front cover for damage to the engine front cover, crankshaft front oil seal or the gasket sealing surface. Refer to Engine Front Cover Cleaning and Inspection  in the Engine Unit Repair Manual.
    16. Fig 3: Locating Drive Belt Shield
    GM190591Courtesy of GENERAL MOTORS CORP.
  16. If you are replacing the engine front cover, remove the drive belt shield.
  17. If you are replacing the engine front cover, remove the crankshaft position sensor from the engine front cover. Refer to Crankshaft Position (CKP) Sensor Replacement (24X CKP Sensor) or Crankshaft Position (CKP) Sensor Replacement (7X CKP Sensor) in Engine Controls-3.4L.
  18. If you are replacing the engine front cover, remove the coolant pump from the engine front cover. Refer to Water Pump Replacement (LA1) in Engine Cooling.
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