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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 5.7L (LS6)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT:
    • The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission housing. To ensure the rigidity of the powertrain and correct transmission alignment, it is important that the rear of the block and the rear of the oil pan are flush or even. The rear of the oil pan must NEVER protrude beyond the engine block and transmission housing plane.
    • DO NOT use the oil pan gasket again.
    • It is not necessary to rivet the NEW gasket to the oil pan.
    Fig 1: Locating Oil Pan & Gasket
    GM1199309Courtesy of GENERAL MOTORS CORP.
  1. Install the oil pan and gasket. Refer to Oil Pan Installation .
    2. Fig 2: Locating Engine Oil Level Sensor
    GM178467Courtesy of GENERAL MOTORS CORP.
  2. Install the oil level sensor. Refer to Engine Oil Level Sensor and/or Switch Replacement .
  3. Install the power steering and air conditioning line retainers to the front of the oil pan.
    4. Fig 3: Identifying Frame Mounting Bolts
    GM822362Courtesy of GENERAL MOTORS CORP.
  4. Install the front frame assembly (1). Refer to Frame Replacement - Front in Frame and Underbody.
    5. Fig 4: View Of Engine Oil Temperature Sensor Electrical Connector
    GM651886Courtesy of GENERAL MOTORS CORP.
  5. Connect the engine oil temperature sensor (3) electrical connector.
    6. NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the transmission housing-to-oil pan bolts.

    Tighten:  Tighten the clutch housing bolts to 50 N.m (37 lb ft).

    7. Fig 5: View Of Right Transmission Closeout Cover & Bolt
    GM309713Courtesy of GENERAL MOTORS CORP.
  7. Install a NEW engine oil filter.
  8. Tighten the oil drain plug. Refer to Engine Oil and Oil Filter Replacement .
  9. Install the right transmission closeout cover and bolt.

    Tighten:  Tighten the transmission closeout cover bolt to 12 N.m (106 lb in).

  10. Install the starter motor. Refer to Starter Motor Replacement (LS6) in Engine Electrical.
    11. Fig 6: View Of Left Closeout Cover & Bolt
    GM178477Courtesy of GENERAL MOTORS CORP.
  11. Install the left transmission closeout cover and bolt.

    Tighten:  Tighten the transmission closeout cover bolt to 12 N.m (106 lb in).

    12. Fig 7: Identifying Engine Support Fixture
    GM1409886Courtesy of GENERAL MOTORS CORP.
  12. Lower the vehicle.
  13. Remove the engine support fixture (1-5). Refer to Engine Support Fixture .
  14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  15. Add engine oil as necessary. Refer toCapacities - Approximate Fluid in Maintenance and Lubrication.
  16. Check for oil leaks.
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