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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 5.3L) >> Repair Instructions - On Vehicle >> Oil Pan Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • 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 reuse the oil pan gasket.
  • It is NOT necessary to rivet the NEW gasket to the oil pan.
    Fig 1: Applying Bead Of Sealant
    GM1551873Courtesy of GENERAL MOTORS CORP.
  1. Apply a 5 mm (0.20 in) bead of sealant, or equivalent 20 mm (0.80 in) long to the engine block. Apply the sealant directly onto the tabs of the front/rear cover gasket that protrudes into the oil pan surface. Refer to Adhesives, Fluids, Lubricants, and Sealers  for the correct part number.
    2. Fig 2: View Of Oil Pan & Bolts
    GM1551874Courtesy of GENERAL MOTORS CORP.
    NOTE: Be sure to align the oil gallery passages in the oil pan and engine block properly with the oil pan gasket.
  2. Pre-assemble the oil pan gasket to the pan.
    1. Install the gasket onto the pan.
    2. Install the oil pan bolts to the pan and through the gasket.
    3. CAUTION: Refer to Fastener Caution .
  3. Install the oil pan, gasket, and bolts to the engine block.

    Tighten: 

    • Tighten the oil pan and oil pan-to-front cover bolts to 25 N.m (18 lb ft).
    • Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).
    • Tighten the transmission housing, converter cover, and transmission bolts/stud to 50 N.m (37 lb ft).

  4. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement - Accessory .
    5. Fig 3: View Of Oil Level Sensor Electrical Connector
    GM1551872Courtesy of GENERAL MOTORS CORP.
  5. Install engine harness to front of oil pan.
  6. Connect the oil level sensor electrical connector.
    7. Fig 4: Transaxle Converter Cover Bolt/Stud And Cover
    GM1655027Courtesy of GENERAL MOTORS CORP.
  7. Install the transaxle converter cover and bolt/stud.

    Tighten:  Tighten the bolt/stud to 12 N.m (106 lb in).

  8. Install new engine oil and a new oil filter. Refer to Engine Oil and Oil Filter Replacement .
  9. Install the engine frame. Refer to FRAME REPLACEMENT .
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