GM Harmonic Damper Holding Tool

  • Services both trucks and SUVs by delivering faster crank bolt removals and installations on 4.2, 3.5 and 2.8-liter in-line GM engines.
  • The tool simply holds the pulley stationary in order to remove the center bolt.
  • In replacing the center bolt after installation of the pulley, factory specifications require up to 240 pounds of torque to seat the pulley properly. Refer to factory specificaitons for specific requirements.


    • Applications:
    • 4.2L Straight 6 cylinder 2003 and later Trailblazer, Envoy, Bravada and 2004 and later Ranier.
    • 3.5L Straight 5 cylinder 2004 and later Colorado & Canyon also 2006 and later Hummer H3.
    • 2.8L Straight 4 cylinder 2005 and later Colorado & Canyon.
    • 2.0L, 2.2L & 2.4L 4 cylinder 2005 and later.
    • 6.0L V-8 2005 and later, 7.0L V-8 2006 and later LS two engines.
    Schley 64500 GM Harmonic Damper Holding Tool

    Only 5 left in stock - order soon

    Price: $46.79

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    14 people have this item in their cart!

    This product was added to our catalog on Monday 19 January, 2009.

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    ToolSource® PO Box 149 Salamanca, NY 14779