GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN 47981 Crankshaft Balancer Holding Tool
    • EN 956 1 Tool Extension
    • EN 41998 B Crankshaft Balancer Installer
    • EN 45059 Torque Angle Sensor Kit

For equivalent regional tools, refer to Special Tools.


    Object Number: 1864551  Size: SH
  1. Place the crankshaft balancer in position on the crankshaft.
  2. Thread the EN 41998 B installer in the crankshaft. Ensure you engage at least 10 threads of the EN 41998 B installer before pressing the crankshaft balancer in place.
  3. Push the crankshaft balancer into position by tightening the nut on the EN 41998 B installer until the large washer bottoms out on the crankshaft end.
  4. Remove the EN 41998 B installer .

  5. Object Number: 2026515  Size: SH
  6. Install the EN 47981 holder  (1) with EN 956 1 extension  (2) to crankshaft balancer.
  7. Caution: Refer to Fastener Caution in the Preface section.

  8. Install the crankshaft balancer bolt (3) and tighten in first pass to  100 N·m (22 lb ft).
  9. Tighten the crankshaft balancer bolt a second pass to  150 degrees using the EN 45059 sensor kit .