GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • EN-47702 Bolt Extractor Kit
    • EN-48268 Main Bearing Cap Remover
    • J 6125-1B Slide Hammer with Adapter

    Object Number: 637743  Size: SH

    Important: Rap on the head of each bolt using an appropriate size punch and hammer. The vibration produced by this procedure assists in successful removal. If a bolt breaks during engine disassembly, a broken bolt extractor kit EN-47702 is available to assist in removal of the remaining bolt segment.

  1. Remove the crankshaft main bearing cap bolts.

  2. Object Number: 637745  Size: SH
  3. Remove the crankshaft main bearing cap stiffener.

  4. Object Number: 637755  Size: SH
  5. Remove the crankshaft main bearing caps using EN-48268 and J 6125-1B .
  6. Remove the lower crankshaft main bearing halves.

  7. Object Number: 637751  Size: SH
  8. Remove the crankshaft.

  9. Object Number: 637753  Size: SH
  10. Remove the upper crankshaft main bearing halves.