GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 29113 Balancer and Crank Sprocket Puller
    • J 45059 Angle Meter

    Object Number: 909647  Size: SH
  1. Apply sealer P/N 12378521 or the equivalent to the keyway of the crankshaft balancer.
  2. Place the crankshaft balancer into position over the key in the crankshaft.
  3. Notice: Do NOT use a power-assisted tool with the special tool in order to remove or install this component. You cannot properly control the alignment of this component using a power-assisted tool, and this can damage the component.

  4. Install the J 29113 onto the crankshaft.
  5. Rotate the hex nut on the J 29113 to install the crankshaft balancer onto the crankshaft.
  6. Remove the J 29113 from the crankshaft.
  7. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 909519  Size: SH
  8. Install the used crankshaft balancer bolt.
  9. Tighten
    Tighten the used crankshaft balancer bolt to 125 N·m (92 lb ft).

  10. Remove the used crankshaft balancer bolt.
  11. Install the NEW crankshaft balancer bolt.
  12. Tighten

    1. Tighten the crankshaft balancer bolt a first pass to 125 N·m (92 lb ft).
    2. Tighten the crankshaft balancer bolt a final pass to 130 degrees using the J 45059 .