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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1443 (Engine Mechanical - 4.2L (Ll8)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Installation Procedure

Installation Procedure

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    Fig 1: Applying Sealer To Block
    GM637715Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The oil pan must be installed within 10 minutes from when sealer was applied.
  1. Apply a 3 mm (0.12 in) bead of sealer GM P/N 12378521 to the block, rather than the oil pan.
    2. IMPORTANT: When you install the oil pan, it could be shifted front or back a little which could cause a transmission alignment problem. The back of the oil pan needs to be flush with the block.
  2. Install the oil pan, maneuvering the oil pan to clear the oil pump and screen assembly.
  3. Install the oil pan bolts.
    4. Fig 2: Aligning Oil Pan To Back Of Block
    GM715595Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Inspect the oil pan alignment. Use a straight edge on the back of the block and the oil pan transmission mounting surface.

    Tighten: 

    • Tighten the oil pan side bolts to 25 N.m (18 lb ft).
    • Tighten the oil pan end bolts to 10 N.m (89 lb in).

  5. Install the 4 transmission bell housing bolts that attach to the oil pan.

    Tighten:  Tighten bolts to 47 N.m (35 lb ft).

    6. Fig 3: Unclipping/Clipping Transmission Cooler Lines At Engine Block
    GM754348Courtesy of GENERAL MOTORS CORP.
  6. Clip transmission cooler lines to the engine block.
  7. Install the front drive axle intermediate shaft bearing assembly. Refer to Intermediate Shaft Bearing Assembly Replacement - Front Drive Axle (S4WD) or Intermediate Shaft Bearing Assembly Replacement - Front Drive Axle (A4WD) in Front Drive Axle.
  8. Install the oil drain plug and filter. Refer to Engine Oil and Oil Filter Replacement  .
    9. Fig 4: Securing Front Differential To Frame
    GM893104Courtesy of GENERAL MOTORS CORP.
  9. Install the front differential to the engine. Refer to Differential Carrier Assembly Replacement (4.2L In-Line Six Cylinder) in Front Drive Axle.
  10. Install the stabilizer shaft. Refer to Stabilizer Shaft Replacement in Front Suspension.
    11. Fig 5: View Of Compressor
    GM735963Courtesy of GENERAL MOTORS CORP.
  11. Install the A/C compressor 2 bottom bolts (4).

    Tighten:  Tighten all 4 bolts (2, 3, 4) to 50 N.m (37 lb ft).

  12. Install the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement  .
  13. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    14. IMPORTANT: Inspect the engine for oil leaks in order to ensure all sealing surfaces are sealed.
  14. Fill the engine with oil. Refer to Engine Oil and Oil Filter Replacement  .
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