Question about 2000 Chevrolet 2500

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When at idle i have a knocking noise coming from transmission or transfer case

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In park there are no moving parts in these compononents. id pay close attention to noise coming from exhaust or engine. if its engine suspect low oil psi due to sludge or bearing wear. other wise pay close attn to cat conv in exhast

Posted on Nov 15, 2009


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