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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 419 (Engine Mechanical - 3.5L (On-Vehicle)) >> Repair Instructions >> Oil Pan Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the engine oil level switch into the oil pan.
    CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.
    2. Fig 1: Installing Engine Oil Level Switch
    G01816952Courtesy of GENERAL MOTORS CORP.
  2. Install the engine oil level switch bolt.

    Tighten 

    Tighten the engine oil level switch bolt to 9 N.m (80 Ib. in).

  3. Install a new oil pan gasket.
  4. Install the oil pan (2) to the lower crankcase.
    5. Fig 2: Installing Oil Pan
    G01816953Courtesy of GENERAL MOTORS CORP.
  5. Loosely install the oil pan retaining bolts.

    Important:  DO NOT install the transaxle brace-to-oil pan bolts.

  6. Install the transaxle brace and the two brace-to-cylinder block bolts.

    Tighten 

    Tighten the transaxle brace bolts to 50 N.m (37 Ib. ft).

  7. Loosely install the transaxle brace-to-oil pan bolts (4).
  8. To ensure proper mounting of the transaxle, align the cast boss on the rear of the oil pan so it is flush with the rear of the cylinder block face. Use a straight edge in order to check the pan alignment from the rear of the block face to the bolt boss on the oil pan.
  9. Press the forward part of the oil pan against the transaxle brace. Be sure to keep the rear of the oil pan flush with the rear face of the cylinder block.

    Tighten 

    Tighten the transaxle brace bolts to 50 N.m (37 Ib. ft).

    Fig 3: Tightening Transaxle Brace Bolts
    G01816954Courtesy of GENERAL MOTORS CORP.
  10. Keep the rear of the oil pan flush with the rear cylinder block and tighten the oil pan retaining bolts.

    Tighten 

    Tighten the oil pan retaining bolts in sequence shown to 25 N.m (18 lb ft).

    11. Fig 4: Identifying Oil Pan Bolts Tightening Sequence
    G01816955Courtesy of GENERAL MOTORS CORP.
  11. Tighten the remaining transaxle brace bolts to the transaxle.

    Tighten 

    Tighten the transaxle brace bolts to 50 N.m (37 lb ft).

  12. Connect the electrical connector to engine oil level switch.
  13. Fill the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  14. Inspect for oil leaks after engine start up.
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