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Squeaky rear suspension


Phillip

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Well I am almost finished with my front bearing problem and now I am diagnosing an annoying squeak in the rear suspension. The shocks seem OK but the rear end squeaks when it bounces. I used a stethescope and it sounded loudest in the lower control arm. It sure sounds like the rubber bushings squeaking. Has anyone had any luck diagnosing this type of noise. I am thinking of squirting soapy water or silicone on the rubber to see if it will quiet down. I am open to any other suggestions.

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I would squirt one bushing at a time till I determined which one is causing the noise, give what ever you use time to penetrate. I would be reluctant to use a petroleum based product as it tends to swell rubber.

There are a bunch of bushings and possibly 6, here is the rear suspension from the manual for a 96 Deville

Bushings Lower Control Arm (2)

Knuckle (2) maybe (3)

Trailing Arm? (1) maybe (2)

post-3-1124933553_thumb.jpg

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My car did this on passenger side and it was the bushing at bolt 22. Try losening or tightening bolt 22 a little bit, thats what fixed mine. I tried to put WD-40 and other things to quiet it down and the noise always came back.

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Phillip,

Here's a link to another discussion that may help. Make sure to read the other 2 discussions linked there. A worn knuckle can cause more problems then just a squeek or a creak.

"Burns" rubber

" I've never considered myself to be all that conservative, but it seems the more liberal some people get the more conservative I become. "

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