GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 43654 Piston Pin Retainer Remover/Installer


    Object Number: 663138  Size: SH
  1. Mark orientation of the piston to the connecting rod.

  2. Object Number: 637689  Size: SH
  3. Remove the piston rings using a piston ring expander.

  4. Object Number: 663781  Size: SH
  5. Remove the connecting rod bearing inserts.

  6. Object Number: 637736  Size: SH
  7. Use J 43654 to remove the piston pin retainers.
  8. Remove the piston pin. The pin is a full-floating style and should slide from the piston.
  9. Remove the piston from the connecting rod.