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Sierradenali123

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Everything posted by Sierradenali123

  1. Sierradenali123
    GMC is ignoring the issue for me. They will not acknowledge that there is a sound. On my engine I beleive it is coming from the exhaust header at the motor. Has anyone replaced the exhaust to fix the problem?
  2. Sierradenali123
    Anyone find the source of the problem? Has anyone changed the pcv to see if the sound is reduced? Two different GM engineers have looked at my truck at different times and cannot duplicate the problem. GM has not referenced the pcv issue as a potential source. As you all know, it is easily heard when fluttering the pedal or under load and low rpm. GM will also not allow me to talk to the engineer or show them a video. It is obvious to me GM knows exactly what the problem is but do not want to fix it. I cannot imagine the problem will go away by itself.
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