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Knocking Sound From Transmission 2007 Silverado LTZ 4x4

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by wal88, Aug 27, 2013.

  1. wal88

    wal88 New Member

    I have a 2007 Chev Silverado 1500 4x4 LTZ. There is a knocking noise from the transmission. The noise is noticeable when the truck is idleing. If I rev the engine the knocking noise disappears. Please, any help with this issue would be greatly appreciated!
     

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