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crank shaft pulley

Discussion in 'GM Powertrain' started by 73rx3, Jan 26, 2009.

  1. 73rx3

    73rx3 New Member

    HI,

    do the crack shaft pulleys go bad?
    i just picked up a 2000 gmc 3500 .
    6.5 diesel.
    the guy said it doesn't have power.
    and i tried to turn the engine over by hand.and it loks like the crack shaft pully moves,but the center does not turn.
    would that make it not run right? Michael

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