Front end squeaking over bumps - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-12-2010, 01:26 AM   #1
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Default Front end squeaking over bumps

The front end of my car always makes a little squeak when going over bumps. It rides smoothly, though. But after a boring weekend, I think I'm looking for something to do.

I've done a little searching on possible causes, so let me tell you guys what I know:
  • Sway bar end links were recently upgraded to polyurethane. Center bushings… maybe later.
  • Wheel hubs passed the "do a donut and listen" test.
  • Brake and power steering fluid levels good; no leaks that I can see.
  • Brake pads are silent, and the rotors are a year old.
  • Town Fair Tire insists that it'* time for a 10,000 mile realignment, but I don't think that matters.

Thoughts?
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Old 04-12-2010, 02:15 AM   #2
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Quote:
Originally Posted by SignOfZeta View Post
The front end of my car always makes a little squeak when going over bumps. It rides smoothly, though. But after a boring weekend, I think I'm looking for something to do.

I've done a little searching on possible causes, so let me tell you guys what I know:
  • Sway bar end links were recently upgraded to polyurethane. Center bushings… maybe later.
  • Wheel hubs passed the "do a donut and listen" test.
  • Brake and power steering fluid levels good; no leaks that I can see.
  • Brake pads are silent, and the rotors are a year old.
  • Town Fair Tire insists that it'* time for a 10,000 mile realignment, but I don't think that matters.

Thoughts?
my drivers front shock makes a little sqeek when i hit bumps. pop your hood and push your car up and down and pinpoint it. im guessing its the same as mine
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Old 04-12-2010, 03:02 AM   #3
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Ball joints...
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Old 04-12-2010, 08:01 AM   #4
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Struts/springs might make some noise. Bounce them by pushing up and down on the car to try and replicate it.

Otherwise, it'* most likely a center sway bushing that fused to the sway bar. The rubber squeaks when you hit a bump. This can be fixed by removing the bushing and replacing or simply wrapping the bar with teflon tape.
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Old 04-13-2010, 06:03 PM   #5
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Well, I popped the hood and dropped all 200+ pounds of me onto each strut tower. No squeaking. Same silence from the rear struts, so I'm guessing it'* just the sway bar center bushings.

How hard are those to inspect/replace?
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Old 04-13-2010, 10:24 PM   #6
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Not too hard you can see them when you take the tire off. They connect the sway bar to the sub-frame.
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Old 04-14-2010, 01:48 AM   #7
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Sounds easy enough. I flew through the sway bar endlinks (well, the front ones at least), so I guess center bushings are +1 on the difficulty scale.

For now, I'll give the sway bar a good whack (or a good pothole) and see if that unsticks it until I have a couple bucks to invest on bushings (after I pay you what I owe, of course).

Thanks for all the help, everyone.
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Old 04-14-2010, 09:05 AM   #8
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My wifes van made noise. I put it on ramps then went under the van and started pushing up and down until I could hear the noise. Then I tracked it down to a sway bar end link. It was the small ball joint on the end link, worn out and had play.
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