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-   -   2009 GL 450 Suspension Sound (https://mbworld.org/forums/gl-class-x164/725265-2009-gl-450-suspension-sound.html)

nobleeth 10-26-2018 11:45 AM

2009 GL 450 Suspension Sound

I own a 2009 GL450 with 145K and have a mild knocking sound in the front end. Sound like it's coming more from the middle then the sides. Mostly over bumps but not always. I am not a mechanic but I jacked it up and took a look and it looks like two of the bushings are bad, in what I believe is the control arms (or maybe they are called the guide arms)? I have the tools and motivation but would like to confirm what the part I need is and how big of a job it is. I looked on YouTube but cannot find a video specific to my car. I looked up control arm bushings but there are 8 different kinds. This one is in the far back of that triangular bar.



TX07GL450 10-26-2018 07:50 PM

yes, those are control arm bushings. rear-inner to be exact.
The best and easy route is to change the whole control arm as new one comes with new bushings.
You can change individual bushings - cheaper but difficult / time consuming.
If paying for the labor, preinstalled is cheaper
if doing yourself, changing individual bushings is cheaper but it depends on how much your time is worth.

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