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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Engine Mechanical - 5.3L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Crankshaft and Bearings Removal

Crankshaft and Bearings Removal

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required 

IMPORTANT: The crankshaft bearing caps are machined with the engine block for the proper clearances. Mark or identify each crankshaft bearing cap location and direction before removal. The crankshaft bearing caps MUST be installed to their original position and direction.

Do not use the bearing cap M8 side bolts again.

Remove the bearing cap M8 side bolts prior to cap removal.

  1. Remove the crankshaft position sensor bolt.
  2. Remove the crankshaft position sensor.
    Fig 1: Removing Crankshaft Position Sensor
    G02129396Courtesy of GENERAL MOTORS CORP.
  3. Remove the crankshaft bearing cap M8 side bolts.
  4. Remove the bearing cap M10 bolts and bolt/studs. Note the M10 bolt/stud locations.
    Fig 2: Removing Crankshaft Bearing Cap M8 Side Bolts
    G02129397Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  5. Install the J 41818  .

    Tighten 

    Tighten the J 41818  bolts to 11 N.m (100 lb in).

  6. Install the J 6125-1B  to the J 41818  in order to remove the crankshaft bearing caps.
    Fig 3: Installing Crankshaft Bearing Cap Remover Tool
    G02129398Courtesy of GENERAL MOTORS CORP.
  7. Remove the bearing caps.
    Fig 4: Removing Crankshaft Bearing Caps
    G02129399Courtesy of GENERAL MOTORS CORP.
  8. Remove the crankshaft.
    Fig 5: Removing Crankshaft
    G02129400Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Use care when handling the crankshaft. Avoid damage to the crankshaft position sensor reluctor ring teeth. Nicks, burrs or other damage to the teeth may effect On-Board Diagnostics (OBD) II system performance.
  9. Lay the crankshaft onto two wooden V blocks or other protective surface.
    Fig 6: View Of Crankshaft
    G02129401Courtesy of GENERAL MOTORS CORP.
  10. Remove the crankshaft bearings from the bearing caps and the engine block.
  11. Mark, sort, or organize the crankshaft bearings so they may be installed to their original position and location. Refer to SEPARATING PARTS   .
    Fig 7: Removing Crankshaft Bearings From Bearing Caps And Engine Block
    G02129402Courtesy of GENERAL MOTORS CORP.