GM Service Manual Online
For 1990-2009 cars only

Special Tools

EN-43653 Flywheel Locking Tool

For equivalent regional tools, refer to Special Tools.


    Object Number: 2148522  Size: SH
  1. Install EN-43653 flywheel locking tool in the starter assembly location, engaging the flywheel, in order to prevent crankshaft rotation.

  2. Object Number: 2148402  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.

  3. Remove the flywheel attaching bolt.
  4. Remove the flywheel (1).
  5. Clean the thread adhesive from the flywheel bolt holes. Use a nylon bristle brush to clean the holes in the crankshaft.
  6. Remove EN-43653 flywheel locking tool .