GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN-38122-A Crankshaft Balancer Holder
    • EN-43653 Flywheel Locking Tool

For equivalent regional tools, refer to Special Tools.


    Object Number: 2148293  Size: SH

    Note: It may be necessary to remove the chamfer (bevel) from the edge of an 18 mm socket in order to get full socket engagement on the thin headed flywheel bolts.

    Do not orientate the flywheel to the crankshaft. It is balanced separately from the engine.

    Note: EN-43653 flywheel locking tool may be used instead of EN-38122-A crankshaft balancer holder to prevent crankshaft rotation.

  1. Remove the flywheel attaching bolt. Use the EN-38122-A holder to prevent crankshaft rotation.

  2. Object Number: 2148402  Size: SH
  3. Remove the flywheel retainer.
  4. Remove the flywheel.
  5. Clean the thread adhesive from the flywheel bolt holes. Use a nylon bristle brush to clean the holes in the crankshaft.