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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1268 (Engine Mechanical - 4.8L, 5.3L, 6.0L Or 6.2L (3 Of 5)) >> Off-Vehicle Repair Instructions (1 Of 3) >> Crankshaft And Bearing Removal >> Removal Procedure

Removal Procedure

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    Fig 1: View Of CKP Sensor, Bolt & O-Ring
    GM1402083Courtesy of GENERAL MOTORS CORP.
    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.
  1. Remove the crankshaft position (CKP) sensor bolt (702).
  2. Remove the CKP sensor (701).
  3. Remove the O-ring (750) from the sensor, as required.
    4. Fig 2: Identifying Bearing Cap Bolts & Studs
    GM1552494Courtesy of GENERAL MOTORS CORP.
  4. Remove the crankshaft bearing cap M8 bolts (127).
  5. Remove the bearing cap M10 bolts (129) and studs (128).
    6. Fig 3: Using Special Tools To Remove Crankshaft Bearing Caps
    GM1552495Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  6. Install the J 41818  (2). See Special Tools .

    Tighten:  Tighten the J 41818  (2) bolts to 11 N. See Special Tools .m (100 lb in).

  7. Install the J 6125-1B  (1) to the J 41818  (2) in order to remove the crankshaft bearing caps. See Special Tools .
    8. Fig 4: View Of Crankshaft Main Bearing Caps
    GM156152Courtesy of GENERAL MOTORS CORP.
  8. Remove the bearing caps.
    9. Fig 5: View Of Crankshaft & Engine Block
    GM156151Courtesy of GENERAL MOTORS CORP.
  9. Remove the crankshaft.
    10. Fig 6: View Of Crankshaft
    GM156153Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Use care when handling the crankshaft. Avoid damage to the CKP sensor reluctor ring teeth. Nicks, burrs or other damage to the teeth may effect on-board diagnostics (OBD) II system performance.
  10. Lay the crankshaft onto 2 wooden V-blocks or other protective surface.
    11. Fig 7: View Of Crankshaft Bearings & Bearing Caps
    GM64293Courtesy of GENERAL MOTORS CORP.
  11. Remove the crankshaft bearings from the bearing caps and the engine block.
  12. Mark, sort, or organize the crankshaft bearings so they may be installed to their original position and location. Refer to Separating Parts .
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