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help what's wrong

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by PolishSilverado, Apr 24, 2013.

  1. PolishSilverado

    PolishSilverado New Member

    hey guys i have a problem i was driving and all of a sudden it felt like someone was hitting the truck with a hammer under my pedals so i stopped and checked and nothing looked bad so i kept driving and all of a sudden there was a loud screeching sound then snap i pulled over and checked around nothing looks broken truck drives fine manual tranny works fine motor runs it goes into 4wd (on the floor model) i changed the right hub bearing it looks fine but still makes a lower thumping noise under the pedals any idea????
  2. Z71_guy

    Z71_guy New Member 1000 Posts

    check u-joints on front drive shaft?

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