GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 41816-A Crankshaft Balancer Remover
    • J 41816-2 Crankshaft End Protector
    • J 42386-A Flywheel Holding Tool

For equivalent regional tools, refer to Special Tools.

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1658136  Size: SH

    Note: Do not use the crankshaft balancer bolt again. Install a NEW crankshaft balancer bolt during final assembly.

  1. Install the J 42386-A tool  (1) and bolts.
  2. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation and tighten the J 42386-A tool bolts to 50 N·m (37 lb ft).


    Object Number: 1658287  Size: SH
  3. Remove the crankshaft balancer bolt (139).

  4. Object Number: 1402060  Size: SH
  5. Use the J 41816-A remover  (1) and the J 41816-2 protector  (2) in order to remove the crankshaft balancer.

  6. Object Number: 1658138  Size: SH
  7. Remove the balancer (138).

  8. Object Number: 1658136  Size: SH
  9. Remove the J 42386-A tool  (1) and bolts.