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Rear Strut noises/help!

Rear Struts

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#1 2003regalgs

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Posted 12 January 2018 - 02:45 AM

Greetings! I've been a lurker, but now fully joining the fun. We bought a 2003 GS a few years ago and this car has pretty much been (major problem) free.

One issue that I thought the car had was sagging rear springs. I bought Monroe Quik-Struts and had a GM dealership replace them around 2 years ago. Last year around January 2017, on a vacation to South Texas, the car started making interesting rear noises. I had the car into the dealership this summer and they said the struts were bad. I had them inspect the rear bars/bushings etc..but all seemed to be ok on that front.

 

I replaced these struts with AC DELCO struts. The car continued to make the sounds. Dealership on last oil change noted NOTHING wrong/they hear nothing/see nothing unusual other than the struts possibly being bad. This winter, we find our car back in South Texas in warmer weather, and once again the interesting sounds return worse than ever. 

 

To give some ideas. the sounds do not happen with bouncing the car. They seem to happen with wheel hop/torsion. Sometimes the sounds will sound like a low rumble of thunder and other times the sounds sound like a combination of nuts/bolts in a grinder/machine gun rat-a-tat-tat style for about 1 sec. The sounds seem to come primarily from the left rear. Tonight upon closer inspection, it seems the lower shock mount is no more than a finger above/and in between the tire and the spring. Is this the way it's supposed to be? I have searched for the right picture but I can not find a good picture. I'm tired of the games/feeling nuts. Is it possible that a wheel bearing could produce such crazy noises? Nobody has suggested this, but with as many of these W's on the road, this car CAN NOT be the only one with such an issue. I appreciate any help that someone can provide!!!!, and will gladly send a WalMart/Amazon gift card to the first person able to give me direction as the dealership seems out of the loop.



#2 Imp558

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Posted 12 January 2018 - 04:12 AM

Welcome. Jack it up and check the wheel bearing on that side. One hand at 12:O'clock and the other at 6:O'clock and try to rock it. If you can, put a hub assembly on it.

 

Bad bearings rumble and totally fucked bearings can make a crack-crack-crack. Easy job, about 45 - 60 minutes start to finish whilst being careful not to spill my beer.

 

Pays to look at the country of origin on new hub assemblies and play the name brand game.


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1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

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#3 2003regalgs

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Posted 12 January 2018 - 03:56 PM

Is it possible, that I would only get such sounds ONLY on weird bumps with a bearing issue? Maybe it's on the way out......The sound is hard to describe because it last for no more than 2 seconds. If the sound was up front, one would think the transmission was junk or a rod was going bad. Back in Ohio the sound is hard to reproduce, and it seems to only do it on manhole bumps and occasional street dips/bumps. Here in South Texas it's easy to make it do it-the roads are CRAP!



#4 vipmiller803

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Posted 12 January 2018 - 05:24 PM

Yes moving the tire around is crucial for a wheel bearing diagnosis. My guess would be sway bar bushings/links or upper strut mounts. Struts have to go very, very bad, before they rattle. That dealership likely screwed you, I would find another service location.


Edited by vipmiller803, 12 January 2018 - 05:26 PM.

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#5 Imp558

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Posted 12 January 2018 - 05:27 PM

It's possible the sounds are unrelared, could be tire tread against something doing the rumble and a loose E-Brake cable clattering against the bottom of the car. Sounds like you need to jack it up armed with a flashlight and pry bar for a good look see. There's nothing out of the ordinary about a professional mechanic being unable to find the problem.
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"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#6 vipmiller803

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Posted 12 January 2018 - 05:29 PM

It's possible the sounds are unrelared, could be tire tread against something doing the rumble and a loose E-Brake cable clattering against the bottom of the car. Sounds like you need to jack it up armed with a flashlight and pry bar for a good look see. There's nothing out of the ordinary about a professional mechanic being unable to find the problem.

Also, check for broken or missing exhaust mounts. Sometimes the rubber lets go enough that the exhaust can swing on the others and make a noise only on bad roads.


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1995 Buick Regal Custom 2DR - 3.8L - DD - 4th Engine, 3rd Transmission, and counting...

2001 Dodge Ram 2500 4x4 - 5.9L Gas

1993 Jeep GC LTD - 4.0L - Snow Days Ride


#7 Imp558

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Posted 12 January 2018 - 05:32 PM

Good point Miller! Also bad engine mounts can change the trajectory of the exhaust and make it vibrate and smack the car's bottom.

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"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#8 cheatah faheatah

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Posted 13 January 2018 - 02:48 PM

 a loose E-Brake cable clattering against the bottom of the car. Sounds like you need to jack it up armed with a flashlight and pry bar for a good look see.

 

I second this....






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