GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 24420-C Harmonic Balancer Puller
    • J 42846 Crankshaft Protector Button
    • J 42847 Flywheel Holding Tool
        For equivalent regional tools, refer to Special Tools.

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1351830  Size: SH

    Note: Ensure the teeth of the flywheel holding tool engage the engine flywheel teeth.

  1. Install the J 42847 tool to the starter bolt holes and tighten the J 42847 tool bolts to 50 N·m (37 lb ft).

  2. Object Number: 470799  Size: SH
  3. Remove the crankshaft balancer bolt and washer.

  4. Object Number: 640013  Size: SH
  5. Install the J 42846 button onto the end of the crankshaft.

  6. Object Number: 677814  Size: SH
  7. Install the J 24420-C puller , or equivalent, onto the crankshaft balancer.
  8. Tighten the center screw of the J 24420-C puller until the crankshaft balancer is removed from the end of the crankshaft.

  9. Object Number: 640015  Size: SH
  10. Remove the crankshaft balancer.

  11. Object Number: 1351830  Size: SH
  12. Remove the J 42847 tool .
  13. Remove the J 42846 button .