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Posted

Anyone else noticed a growl or rumble at 1600-1700 RPM?  Most noticable on a smooth road in OD where it occurs near 55 MPH.

 

If you noticed it, do you know what it is?  Exhaust resonance?

Posted

My silverado had something like that around 38-42 MPH.  Had the trans reprogrammed.  

 

Has been fine since.  However i drive in 3rd around town now.

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