what causes the shutter/rumbling noise under the car when driving on 2007 Mercedes-Benz ML63 AMG

rumbling shuttering noise louder when travelling over patched up roads, pot holes, uneven road surfaces. what is causing this problem

by in Tacoma, WA on January 18, 2012
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer 1 comment
ANSWER by , April 19, 2012
I just installed an after market trailer hitch on my GLK 350. I started getting a rumbling just as you describe above. Hitch is bolted to the same cross member that supports the rear suspension. Vibration from suspension is transmitted through the hitch up through the rear attachment points then into the rear floor. Very annoying. Do you have a hitch installed?
COMMENT by , March 16, 2015
I have the same problem with an after market hitch making a rumble. Any fix for this short of removing the hitch?