Upper Strut Bushings - Chevy SS Forum
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post #1 of 24 (permalink) Old 04-25-2019, 05:01 PM Thread Starter
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Upper Strut Bushings

Hey everyone, new SS owner here located in OKC. 2015 HW M6...been looking for around a year and finally found the one. Absolutely LOVE it so far. I would have posted this in the technical thread, but donít have 20 posts on the forum

I do, however, have a couple questions for anyone who has replaced their (notoriously bad) upper strut mount bushings in their SS. Iíve been noticing a hollow rattling sound in the front end while hitting small bumps at low speeds, so I assume the bushings are to be blamed.

Questions:

1) Did you have a shop replace your bushings? How much did it cost? I was quoted $250 for both (labor only) and feel thatís a bit high.

2) If you replaced them yourself, was it a big job? I was told today that we would have to pull the entire strut, compress the spring, remove nut and old bushing, then UNDO the spring, then redo it or something rather...seemed like youíd only have to compress it once to me, but Iím far from a mechanic. If anyone wouldnít mind jotting down some basic ďhow toĒ steps, that would be greatly appreciated. I MIGHT even consider renting a spring compressing tool and tackling it myself if itís simple enough.

Thanks everyone in advance for your help.

Cameron


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post #2 of 24 (permalink) Old 04-25-2019, 05:04 PM Thread Starter
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Here are a couple pictures if you guys were curious what she looked like. Hope this works...


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post #3 of 24 (permalink) Old 04-25-2019, 05:11 PM
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have a listen while somebody drives by you perhaps

My 2016 was just in, still under B 2 B warranty, to address a rattle from the right front. Turns out it was a stabilizer bar end link which was making the rattle.

My car's noise showed up under pretty much the circumstances you described for your car's noise. You could have the good fortune to have something fairly similar to my fix, for yours.
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post #4 of 24 (permalink) Old 04-25-2019, 05:21 PM Thread Starter
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Thanks for the response! I wonder how I could go about trying to diagnose the rattle myself.

What did they have to do to fix yours?


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post #5 of 24 (permalink) Old 04-25-2019, 05:34 PM
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The dealer tech drove around in their awful driveway and heard the noise.

He then put the car onto the lift which lifted the car by the tires; not by the chassis, keeping the suspension loaded normally, and poked and pulled on everything he could get his hands on. The right front stabilizer bar link moved when it obviously should not have moved.

From inside the car I thought the noise was coming from the right rear.

On fairly new cars, the end links can normally be unbolted fairly easily. In the areas where salt and brine and other wonderful chemmies are used to keep roads clear of frozen precip, the fasteners sometimes need a bit of persuasion to separate.

Finding something like that kind of rattle by yourself can get challenging. That's why I suggesting having somebody drive by on a section of broken pavement like that where you hear the noise from inside. A few passes *may* help you decide how high up, or low down, the noise seems to come from.
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post #6 of 24 (permalink) Old 04-25-2019, 06:03 PM
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I had a noise similar to yours. Some kind person on here suggested the sway bar end link. Changed out both the front links, and all is better. Did it myself and wasn’t too bad and I am no mechanic.
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post #7 of 24 (permalink) Old 04-25-2019, 11:13 PM
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To build on all the good inputs above, I'd suggest first remove the right front stabilink and go for a short drive. You'd want to do it with both wheels on the ground (on ramps) or entire front of the car in the air to prevent windup of the stabar. An air gun would be handy for removal, not for re-assembly. If one of the stabilink joints is the culprit, the noise should be gone. If the top mount (what you refer to as strut bushing) remains suspect, I would take it to the shop. It does require disassembly of the strut module including removal of the spring with the use of spring compressor(s). This operation can be dangerous and should not be attempted without experience and proper tools. You could also damage the coil spring coating with the wrong compressors or technique and initiate a corrosion-induced spring failure down the road.
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post #8 of 24 (permalink) Old 04-26-2019, 10:04 AM
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I'm probably wrong, as people like to point out on forums, but I actually don't think I've heard much about the strut mounts on the SS. Lots of bad ARB end links though.

Mine were bad at 25k miles. Pretty simple to install and inexpensive part. I went with the Moog links. I like them b/c you can service them.
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post #9 of 24 (permalink) Old 04-26-2019, 10:15 AM
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I did the strut bearing replacement in my old G8 (very similar configuration, magride strut aside.) At the time I was also upgrading the struts and shocks and wanted to get my hands dirty. Turned out ok, front struts arenít hard but you make to make sure you have them clocked properly when re-installing them (take lots of pictures as you take things apart) and youíll need to ensure everything is torqued to spec when you reinstall. Spring compressors you can borrow from OíReilly etc. are a little dicey but doable if you are careful and take your time. Alignment should be done afterward.

If I was to do it again I would most likely have a qualified dealership/shop do the work. Iím 5 years older and wiser now...

Check the other possibilities as noted previously first for sure and good luck.


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post #10 of 24 (permalink) Old 04-26-2019, 10:16 AM
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I replaced my strut bushing with whitelines. I rented the spring compressor from AutoZone. It's a PITA, but not too big of a deal. I used an impaq driver to compress the springs. Took me about 20 minutes to take the strut out and a good 45 to compress the spring, change the bushing and put it back together. I think I had about 3 hours tied up in it.

If I were to do it again, I would just take the struts to a shop and have them change the bushings for me. Save me some headache.
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