Question about 1997 GMC Sierra

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97 Sierra 5.7 no spark

I have a 97 Sierra in my shop customer replaced the motor with a brand GM Crate motor but their is no spark I check all fuses,connections.grounds they all check out Ok I even went and installed his coil and module on running engine and they worked fine.He did put a new cap & rotor so thats fine. Do you think.

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Is the rotor shaft gear new? if not check it out that will cause your problem

Posted on May 17, 2009

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