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Home >> Chevrolet >> 2018 >> Impala Premier, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.5L (LCV)) >> Repair Instructions - On Vehicle >> Oil Pan Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Clean and inspect the surfaces of the oil pan and engine block. Refer to Oil Pan Cleaning and Inspection .
  2. GM2726783Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The oil pan sealing surfaces must be free of contamination prior to applying the sealer.
    • Install and align the oil pans within 20 minutes of applying the sealer.
    • The oil pan must be fastened to final torque specification within 60 minutes of applying the sealer.

    Apply a 4.25 mm bead of sealer (1) on the level part of the flange around the perimeter of the oil pan. Refer to Adhesives, Fluids, Lubricants, and Sealers .

  3. Place the oil pan to the engine and loosely installing fasteners at the four corners of the oil pan.
  4. GM3406095Courtesy of GENERAL MOTORS COMPANY

    Install the right oil pan to engine block fasteners (1, 3) hand tight.

  5. Install the oil pan to transmission fastener (2) hand tight.
  6. Connect the oil level sensor harness connector.
  7. GM3406093Courtesy of GENERAL MOTORS COMPANY

    Install the left oil pan to engine block fasteners (1, 2, 3) hand tight.

  8. GM3405114Courtesy of GENERAL MOTORS COMPANY

    Install the transmission to oil pan fastener (1) hand tight.

  9. GM3405097Courtesy of GENERAL MOTORS COMPANY

    Install the rear oil pan to engine block fasteners (1) hand tight.

  10. Fig 1: Identifying Engine Oil Pan Bolts With Tightening Sequence
    GM2726785Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Tighten the oil pan bolts in sequence to final torque twice using the following procedure:

    1. Tighten the fasteners in sequence (1-11) to 25 N.m (18 lb ft).
    2. Tighten the fasteners in sequence (12-13) to 10 N.m (89 lb in).
  11. Tighten the oil pan to transmission bolts to 60 N.m (44 lb ft).
  12. Install the catalytic converter. Refer to Catalytic Converter Replacement .
  13. GM3405101Courtesy of GENERAL MOTORS COMPANY

    Position the catalytic lower brace (2).

  14. Install the catalytic converter to oil pan brace fasteners (1) and tighten to 25 N.m (18 lb ft).
  15. Install the front pipe. Refer to Front Pipe Replacement (LCV) .
  16. GM2726758Courtesy of GENERAL MOTORS COMPANY

    Install the front engine cover (1). Refer to Engine Front Cover Replacement .

  17. Install the drivetrain and front suspension frame. Refer to Drivetrain and Front Suspension Frame Replacement .
  18. Remove the engine support fixture. Refer to Engine Support Fixture .
  19. Refill the engine oil and install a NEW oil filter. Refer to Engine Oil and Oil Filter Replacement .
  20. GM2907416Courtesy of GENERAL MOTORS COMPANY

    Install the front compartment splash shield (2). Refer to Front Compartment Splash Shield Replacement .

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