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driving noise

  1. Werewolf in the back hatch howling in 6th 7th and 8th gear.

    General Discussion
    Have 2015 stingray 2lt none z51 package auto a8,zf1,mmp exhaust.when driving in 6th,7th,and 8th gear around 1500rpms i get a vibration howling noise coming from the rear area,does it more on flat driving area. Sometimes up and down hill but most of the time on flat roads, have taken to one...
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