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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.0L (LTG) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Oil Pan Replacement (AWD) >> Installation Procedure

Installation Procedure

  1. Clean and inspect the surfaces of the oil pan and engine block. Refer to Oil Pan Cleaning and Inspection .
    2. Fig 1: Engine Oil Pan Sealing Surface
    GM3406334Courtesy 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.
  2. 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. Fig 2: Oil Pan To Transmission Fasteners
    GM3405109Courtesy of GENERAL MOTORS COMPANY
  4. Install the right oil pan to engine block fasteners (1) hand tight.
  5. Install the oil pan to transmission fastener (2) hand tight.
  6. Connect the oil level sensor harness connector.
    7. Fig 3: Left Oil Pan To Engine Block Fasteners
    GM3405107Courtesy of GENERAL MOTORS COMPANY
  7. Install the left oil pan to engine block fasteners (2, 3) hand tight.
    8. Fig 4: Transmission To Oil Pan Fastener
    GM3405114Courtesy of GENERAL MOTORS COMPANY
  8. Install the transmission to oil pan fastener (1) hand tight.
    9. Fig 5: Rear Oil Pan to Engine Block Fasteners
    GM3405097Courtesy of GENERAL MOTORS COMPANY
  9. Install the rear oil pan to engine block fasteners (1) hand tight.
    10. CAUTION:

    Refer to Fastener Caution .

  10. 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 engine bolts to 60 N.m (44 lb ft).
    12. Fig 6: Engine Oil Cooler Connector
    GM3405124Courtesy of GENERAL MOTORS COMPANY
  12. Install the engine oil cooler (2). Refer to Engine Oil Cooler Replacement .
  13. Install the catalytic converter. Refer to Catalytic Converter Replacement (LTG) .
    14. Fig 7: Catalytic Converter Lower Brace & Fasteners
    GM3405101Courtesy of GENERAL MOTORS COMPANY
  14. Position the catalytic lower brace (2).
  15. Install the catalytic converter to oil pan brace fasteners (1) and tighten to 25 N.m (18 lb ft).
  16. Install the front exhaust pipe. Refer to Exhaust Front Pipe Replacement (LTG AWD) .
    17. Fig 8: Engine Front Cover Bolts & Oil Seal
    GM2726758Courtesy of GENERAL MOTORS COMPANY
  17. Install the front engine cover. Refer to Engine Front Cover Replacement .
  18. Install the transfer case. Refer Transfer Case Replacement .
  19. Install the drivetrain and front suspension frame front crossmember. Refer to Drivetrain and Front Suspension Frame Replacement .
  20. Remove the engine support fixture. Refer to Engine Support Fixture .
  21. Refill the engine oil and install a NEW oil filter. Refer to Engine Oil and Oil Filter Replacement .
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