GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 6125-1B Slide Hammer with Adapter
    • J 41818 Crankshaft Bearing Cap Remover

    Important: 

       • The crankshaft bearing caps are machined with the engine block for the correct 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.


    Object Number: 1950858  Size: SH
  1. Remove the crankshaft position (CKP) sensor retaining bolt (2).
  2. Remove the CKP sensor (1).

  3. Object Number: 1950859  Size: SH
  4. Remove the M8 crankshaft bearing cap bolts (1), ten places.
  5. Remove the M10 crankshaft bearing cap bolts (2), ten places.
  6. Remove the M10 crankshaft bearing cap studs (3), ten places.
  7. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1950860  Size: SH
  8. Install the J 41818  (1).
  9. Tighten
    Tighten the J 41818 to 11 N·m (97 lb in).

  10. Install the J 6125-1B  (2) to the J 41818  (1) in order to remove the crankshaft bearing caps.

  11. Object Number: 1950861  Size: SH
  12. Install the crankshaft bearing cap bolts and studs (2).
  13. Remove the crankshaft bearing caps (1).

  14. Object Number: 1950862  Size: SH
  15. Remove the crankshaft (1).
  16. 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.

  17. Lay the crankshaft onto wooden V blocks or other protective surface.

  18. Object Number: 1950864  Size: SH
  19. Remove the crankshaft bearings (2) from the bearing caps (1) and the cylinder block (3).
  20. Mark, sort, or organize the crankshaft bearings (2) so they may be installed to their original position and location. Refer to Separating Parts .