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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Engine Mechanical - 3.8L) >> Repair Instructions - On Vehicle >> Engine Front Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (L26) .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Drain the cooling system. Refer to Cooling System Draining and Filling (L26, LY7 GE 47716 Fill) or Cooling System Draining and Filling (L26 Static Fill) .
  5. Lower the vehicle.
  6. Loosen the water pump pulley bolts.
  7. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  8. Remove the water pump pulley.
    9. Fig 1: View Of Power Steering Pump & Mounting Bolts
    GM282122Courtesy of GENERAL MOTORS CORP.
  9. Remove the power steering pump bolts and reposition the pump.
  10. Raise the vehicle.
  11. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
    12. Fig 2: Identifying Crankshaft Front Oil Seal
    GM153586Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Be careful not to damage the crankshaft.
  12. Pry out the crankshaft front oil seal with a flat-bladed tool such as a large screwdriver. Use care to avoid damaging the crankshaft front oil seal bore or the crankshaft front oil seal contact surfaces.
  13. Disconnect the electrical connectors from the following:
    • Camshaft position (CMP) sensor
    • Crankshaft position (CKP) sensor
    • Oil pressure sensor
    14. Fig 3: Identifying Crankshaft Position Sensor Shield
    GM97731Courtesy of GENERAL MOTORS CORP.
  14. Remove the crankshaft position sensor shield.
  15. Remove the radiator outlet hose from the water pump. Refer to Radiator Outlet Hose Replacement (L26) .
  16. Lower the vehicle.
  17. Install the engine support fixture. Refer to Engine Support Fixture .
  18. Raise the vehicle.
    19. Fig 4: Identifying Oil Filter
    GM406039Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The oil pan can be dropped slightly for engine front cover clearance if all pan bolts are loosened and the oil level sensor is removed.
  19. Remove the oil filter.
  20. Remove the engine mount bracket for oil pan access. Refer to Engine Front Mount Bracket Replacement .
  21. Disconnect the oil level sensor electrical connector.
  22. Remove the oil level sensor.
  23. Remove the oil pan-to-engine front cover bolts.
  24. Loosen the remaining oil pan bolts to gain access for the engine front cover removal. DO NOT remove the remaining oil pan bolts.
    25. Fig 5: Identifying Crankshaft Position Sensor
    GM97733Courtesy of GENERAL MOTORS CORP.
  25. Remove the crankshaft position sensor.
    26. Fig 6: View Of Engine Front Cover & Oil Filter Adapter
    GM97759Courtesy of GENERAL MOTORS CORP.
  26. Remove the engine front cover bolts.
  27. Remove the engine front cover with the oil filter adapter as one assembly.
    28. Fig 7: Identifying Engine Front Cover Gasket
    GM97758Courtesy of GENERAL MOTORS CORP.
  28. Remove the engine front cover gasket.
    29. Fig 8: Identifying Oil Filter Adapter & Pressure Relief Valve
    GM406042Courtesy of GENERAL MOTORS CORP.
  29. If replacing the engine front cover, remove the oil filter adapter and pressure relief valve from the engine front cover.
    30. Fig 9: Locating Water Pump Bolts
    GM46177Courtesy of GENERAL MOTORS CORP.
  30. If replacing the engine front cover, remove the water pump from the engine front cover.
    31. Fig 10: Identifying Oil Pump Cover & Gear Set
    GM153600Courtesy of GENERAL MOTORS CORP.
  31. If replacing the engine front cover, remove the oil pump cover and gear set from the engine front cover. Refer to Oil Pump Cover and Gear Set Replacement .
  32. Inspect the oil pump cover and gear set. Refer to Oil Pump Cleaning and Inspection .
    33. Fig 11: Identifying Camshaft Position Sensor
    GM153587Courtesy of GENERAL MOTORS CORP.
  33. If replacing the engine front cover, remove the camshaft position sensor from the engine front cover.
  34. Inspect the timing chain for overall in and out movement. Maximum movement is 25.4 mm (1 in). Refer to Camshaft Timing Chain and Sprocket Cleaning and Inspection (L26) .
  35. Inspect the sprockets for wear.
  36. Inspect the oil pan gasket. Replace the oil pan gasket if necessary.
  37. Clean the engine front cover mating surfaces.
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