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GMPP Sway Bar squeaking

 
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SS1AB
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2002 Chevrolet Impala


PostPosted: Sat Aug 13, 2016 10:24 am    Post subject:  GMPP Sway Bar squeaking Reply with quote

I purchased a GMPP front and rear sway bar kit. The front squeaks loudly regardless of what I do. I purchased some aftermarket bushings that were supposed to eliminate this. They were quieter at first but they are squeaking as bad or worse now. I have tried the suspension lube from Energy Suspension as well and it did not solve the problem. I assume that this sway bar kit was stock on the 2004-2005 SS models and other people would have complained about the noise as well. I love the difference it how the car handles but the squeaking at low speed driving in city traffic is about to drive me nuts! Anyone have any suggestions beyond what I have already tried? I have considered ordering a Dorman front sway bar kit to see if that makes any difference. Sad
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Frank
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PostPosted: Sat Aug 13, 2016 4:57 pm    Post subject:   Reply with quote

IIRC, the only points of contact are the two rubber insulators (on the engine cradle?) and the actual end links. I'm guessing it's the insulators that are squeaking if it's the sway bar, in which case you can wet them down with some silicone spray or WD40 - however, I've seen more squeaky strut mounts in my time (especially when the bearings wear out) than sway bars.

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SS1AB
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PostPosted: Mon Aug 15, 2016 10:58 am    Post subject:   Reply with quote

I have not tried WD40 or a silicone spray. The noise came after the installation of the GMPP sway bar. The squeaking was not there until I installed the larger sway bar so I assume that the strut mounts are not my issue. Energy Suspension sells a lube that is supposed to stop the squeaking but it did not help. Do you think a silicone based grease will work as well as the spray? Would this be something I would have to do periodically to keep the squeaking away? If none of that works, I will try a different sway bar set up as it is something I can do. I am not set up nor am I comfortable replacing the strut mounts as I do not have a strut spring compressor. If none of what you have recommended works I will have to have my mechanic replace the strut mounts. Thanks for our input on this...
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Chamber
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PostPosted: Fri Aug 19, 2016 6:53 pm    Post subject:   Reply with quote

When you replaced the sway bar, did you loosen the 4 bolts that attach the lower subframe (engine cradle) to the main frame (they're located in large rubber bushings)? If so, make sure you re-tightened them enough. It's probably not the problem, because when they are loose it usually results in a popping or loud clicking noise, not a squeak, but it still might be worth checking before you spend money w/ a mechanic.
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SS1AB
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PostPosted: Sat Aug 20, 2016 2:38 pm    Post subject:   Reply with quote

Thanks for the suggestion. I am pretty anal about torqueing any bolt or nut that I loosen. I had all of the cradle bolts checked the last time I had the oil changed. I will keep chasing this and once I figure it out I will post the solution that works.

Thanks again!
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Frank
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PostPosted: Mon Aug 22, 2016 3:41 am    Post subject:   Reply with quote

Silicone grease should work fine but you will probably have to disassemble the bushings from the bar in order to apply it...just easier to spray something in there.

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SS1AB
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PostPosted: Mon Aug 22, 2016 9:33 pm    Post subject:   Reply with quote

Thanks, I will give that a try to see if it solves the issue.
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bigdog60
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PostPosted: Wed Aug 24, 2016 9:24 pm    Post subject:   Reply with quote

Have read this and thought about it many times. So here I go. Is there a chance the squeak is coming from the rear ? My rear sway bar links once drove me crazy trying to find where a squeak was coming from.

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