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Oil Pan Installation (LTG)

    Fig 1: Lower Oil Pan
    GM2726781Courtesy 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 pans must be fastened to final torque specification within 60 minutes of applying the sealer.
  1. Apply a bead of RTV sealant to the perimeter of the lower oil pan.
  2. Install the lower oil pan (1) to the upper oil pan.
    3. CAUTION:

    Refer to Fastener Caution .

    NOTE:

    Two long bolts secure the lower oil pan and upper oil pan together to the lower crankcase.

  3. Install the short lower oil pan bolts (2) and tighten to 10 N.m (89 lb in).
    4. Fig 2: Short Lower Oil Pan Bolts
    GM2726783Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The lower crankcase surface must be free of contamination prior to applying the sealer.
    • Install and align the oil pan to block within 20 minutes of applying the sealer.
    • The oil pan must be fastened to final torque specification within 60 minutes of applying the sealer.
  4. 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 .
    5. Fig 3: Oil Pan And Oil Pan Bolts
    GM2726788Courtesy of GENERAL MOTORS COMPANY
  5. Install the oil pan (1).
  6. Install the oil pan bolts (2, 3) finger tight.
    7. Fig 4: Engine Oil Pan Bolt Tightening Sequence
    GM2726785Courtesy of GENERAL MOTORS COMPANY
  7. Tighten the oil pan bolts in sequence to final torque twice using the following procedure:
    1. Tighten bolts in sequence 1-11 to 25 N.m (18 lb ft).
    2. Tighten bolts in sequence 12-13 to 10 N.m (89 lb in).
    8. Fig 5: Engine Oil Cooler And Bolts
    GM2769480Courtesy of GENERAL MOTORS COMPANY
  8. Install the engine oil cooler (1).
  9. Install the engine oil cooler bolt (2) and tighten to 10 N.m (89 lb in).
    10. Fig 6: Oil Pump Flow Control Valve Cover
    GM2769479Courtesy of GENERAL MOTORS COMPANY
  10. Install the oil pump flow control valve cover (2).
  11. Install the valve cover bolts (1, 3) and tighten to 9 N.m (80 lb in).
  12. Install the valve cover bolt (4) and tighten to 58 N.m (43 lb ft).
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