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Home >> Cadillac >> 2021 >> CT4 V, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.7L (L3B) - Repair Instructions - Ct4 (6 Of 6) >> Oil Pump Replacement (AWD) >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. Remove the oil fill cap.
  3. Raise and support the vehicle. Lifting and Jacking the Vehicle
  4. GM5948738Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT remove oil filter.

    Oil Pan Drain Plug (1) - Remove

  5. Drain the engine oil into a suitable container.
  6. GM5399464Courtesy of GENERAL MOTORS COMPANY

    {If equipped} Front Crossmember Brace Nut (1) - Remove [4x]

  7. {If equipped} Front Crossmember Brace (2) - Remove
  8. GM5389821Courtesy of GENERAL MOTORS COMPANY

    Lower Oil Pan Bolt (1) - Remove [17x]

  9. NOTE:

    Do not pry on the oil pan to lower crankcase extension as the sealing surface will become damaged.

  10. Locate the four threaded insert jack screw locations on the lower oil pan. Use four lower oil pan bolts in these locations, and tighten the bolts by hand 1 to 2 turns each in a uniform manner, rotating between bolts until the oil pan has full separation from the lower crankcase extension.
  11. Oil Pan (2) - Remove and DISCARD
  12. GM5517356Courtesy of GENERAL MOTORS COMPANY

    Oil Pump Suction Pipe Bolt (1) - Remove

  13. Oil Pump Suction Pipe (2) - Remove
  14. Oil Pump Suction Pipe Gasket (3) - Remove and DISCARD
  15. GM5517355Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  16. GM5517353Courtesy of GENERAL MOTORS COMPANY

    Balancer Shaft Housing Bolt (1) - Remove [2x]

  17. Balancer Shaft Bearing Cap (2) - Remove
  18. Balancer Shaft Bearing (3) - Remove
  19. GM5517354Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Leave one oil pump bolt threaded into the oil pump to assist with oil pump removal.

    Oil Pump Bolt (1) - Remove [4x]

  20. GM5517357Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Apply pressure on the oil pump drive shaft as indicated by the arrow to keep the oil pump drive shaft inside of the oil pump while removing the oil pump.

    Oil Pump (1) - Remove

  21. GM5517358Courtesy of GENERAL MOTORS COMPANY

    Oil Pump Drive Shaft (1) - Remove

  22. Oil Pump Gasket (2) - Remove and DISCARD