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Old Mar 23, 2010 | 12:46 AM
  #1  
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Default Some Advice Needed

I bought my 2004 coupe on March 13th from a Cadillac/Saab dealer in Pasadena, CA (Symes Cadillac). I've noticed that there is significant creaking coming from the front of the car (can't pinpoint the source) when going over speed bumps etc. The creaking is louder when the weather is colder. If anyone has any input on what this might be, I'd love some ideas.

The car came with a 30-day warranty. However, I'm kind of on the fence as to whether a Cadillac dealer will be able to adequately diagnose and repair the problem. Then I start thinking about whether they will crack the rocker panels and stuff when they lift the car, and I get more nervous.

My main question is this: With all of the above in mind, should I try to get this fixed under the included 30-day warranty by the Cadillac dealer, or should I shell out some money to ensure it is fixed right and ensure the car is lifted correctly, etc. at somewhere like Corvette Mikes or another local Corvette shop?

Thanks in advance for any helpful input!
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Old Mar 23, 2010 | 12:52 AM
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Originally Posted by nkx1
I bought my 2004 coupe on March 13th from a Cadillac/Saab dealer in Pasadena, CA (Symes Cadillac). I've noticed that there is significant creaking coming from the front of the car (can't pinpoint the source) when going over speed bumps etc. The creaking is louder when the weather is colder. If anyone has any input on what this might be, I'd love some ideas.

The car came with a 30-day warranty. However, I'm kind of on the fence as to whether a Cadillac dealer will be able to adequately diagnose and repair the problem. Then I start thinking about whether they will crack the rocker panels and stuff when they lift the car, and I get more nervous.

My main question is this: With all of the above in mind, should I try to get this fixed under the included 30-day warranty by the Cadillac dealer, or should I shell out some money to ensure it is fixed right and ensure the car is lifted correctly, etc. at somewhere like Corvette Mikes or another local Corvette shop?

Thanks in advance for any helpful input!
I would think, since they are a GM dealer, if they cannot diagnose it, they would send it to a Chevy dealer to properly diagnose it.
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Old Mar 23, 2010 | 01:05 AM
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Sounds like you just need to lubricate the sway bar bushings. You don't even need to lift the car to do this easy maintenance.

You slide under the front end, remove the bolts holding the sway bar. You don't need to remove or loosen the endlink bolts. Pull the sway bar away, remove bushing. Clean, relubricate, and reposition the bushings. Replace bolts. Torque to spec.
I lubricate the inside of the bushings (where the sway bar rubs inside the bushings). I have not lubricated the outside of the bushings.

Torque settings:

Front bolts... 43 ft-lbs.

Rear Upper bolt... 49 ft-lbs.

Rear Lower bolt... 70 ft-lbs.

End links (don't need to mess with these for a simple lube job)... 53 ft-lbs.

Might as well do the rears too!

People use various lubricants. You can do a search to get ideas. I understood to use a non-petroleum based lithium grease.

I used the Amsoil lithium grease on the left in the photo. Lasts at least 1-2 years.



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Welcome to Corvette Forum!

Last edited by gpotski; Mar 23, 2010 at 01:14 AM.
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Old Mar 23, 2010 | 01:23 AM
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Originally Posted by 81c3
I would think, since they are a GM dealer, if they cannot diagnose it, they would send it to a Chevy dealer to properly diagnose it.
Interesting idea; I suppose I could ask them if that is the case...


Originally Posted by gpotski
Sounds like you just need to lubricate the sway bar bushings. You don't even need to lift the car to do this easy maintenance.

You slide under the front end, remove the bolts holding the sway bar. You don't need to remove or loosen the endlink bolts. Pull the sway bar away, remove bushing. Clean, relubricate, and reposition the bushings. Replace bolts. Torque to spec.
I lubricate the inside of the bushings (where the sway bar rubs inside the bushings). I have not lubricated the outside of the bushings.

Torque settings:

Front bolts... 43 ft-lbs.

Rear Upper bolt... 49 ft-lbs.

Rear Lower bolt... 70 ft-lbs.

End links (don't need to mess with these for a simple lube job)... 53 ft-lbs.

Might as well do the rears too!

People use various lubricants. You can do a search to get ideas. I understood to use a non-petroleum based lithium grease.

I used the Amsoil lithium grease on the left in the photo. Lasts at least 1-2 years.

Welcome to Corvette Forum!
I've read that when doing a search for creaking, but the creaking really sounds more involved that. Is it possible for the bushing creaking to sound like it's coming from the center console area as well?

Another issue regarding doing it myself is that I'm not sure if I possess the skill to do that. I know it's just loosening and tightening a few bolts, but I don't want to screw something up and have my car fall apart one day while driving down the freeway...

Thanks for the kind welcome!
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Old Mar 23, 2010 | 01:26 AM
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Originally Posted by nkx1
Interesting idea; I suppose I could ask them if that is the case...




I've read that when doing a search for creaking, but the creaking really sounds more involved that. Is it possible for the bushing creaking to sound like it's coming from the center console area as well?

Another issue regarding doing it myself is that I'm not sure if I possess the skill to do that. I know it's just loosening and tightening a few bolts, but I don't want to screw something up and have my car fall apart one day while driving down the freeway...

Thanks for the kind welcome!
I know how you feel now. I felt the same way, especially when I first did soundproofing on the Vette. I read up on it, pulled the carpeting and seats out, and the wife was like......"you'll never get it back together again." Well, I did ok...

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Old Mar 23, 2010 | 02:05 AM
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If it's coming from the front...go with the bushing lube my friend.
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Old Mar 23, 2010 | 02:43 AM
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Under warranty take it back until your happy good luck
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Old Mar 23, 2010 | 03:36 AM
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I'd start with the bushings, but if you try to lubricate them yourself, be sure you leave yourself plenty of time before your warranty expires to take it to the dealer for repair if it doesn't work
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Old Mar 23, 2010 | 12:40 PM
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You got the warranty (and paid for it one way or the other)

Use it!
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Old Mar 23, 2010 | 12:44 PM
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Actually, I re-read the warranty and it apparently only covers the power train. Oh well, looks like I may buysome ramps and try to do the bushings myself.

I have all the tools, just have never done it before. Is it possible for the noise from the bushings to transfer to the inside of the car, as in I can hear the creaking perfectly fine with the windows up?
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Old Mar 23, 2010 | 02:03 PM
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I really think gpotski is correct about the sway bar bushings - I had the same issue with mine but was fortunate that it happend at the dealership before I wrote the check - they lubed the bushings and it's been fine since.

You're right, you can hear the creak inside the car...very well!!

Simple fix.
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Old Mar 23, 2010 | 02:15 PM
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Originally Posted by nkx1
Actually, I re-read the warranty and it apparently only covers the power train. Oh well, looks like I may buysome ramps and try to do the bushings myself.

I have all the tools, just have never done it before. Is it possible for the noise from the bushings to transfer to the inside of the car, as in I can hear the creaking perfectly fine with the windows up?
if your new to the C5, don't forget the jacking puck (or make one). If it wasn't for this place, I would've jacked the car up wrong as there is nothing in the owners manual (on a 98) that I could find.

Can you have someone outside the car while you go over a speedbump? they should be able to tell you more if it's coming from the front vs. something inside. There's lots of areas for a creak, the targa top, the rear hatch if you have a coupe. I had a terrible sqeek when driving, and when the wife was a passenger, she found it was the latch on the targa (put hand on it and it stopped) . As a driver, I could not tell, thought it was the rear hatch area.

Last edited by socalman; Mar 23, 2010 at 02:19 PM.
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Old Mar 23, 2010 | 02:17 PM
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Originally Posted by 81c3
I would think, since they are a GM dealer, if they cannot diagnose it, they would send it to a Chevy dealer to properly diagnose it.
They will get the problem fixed by Chevy people.
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Old Mar 23, 2010 | 02:20 PM
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Originally Posted by Toms02C5
I really think gpotski is correct about the sway bar bushings - I had the same issue with mine but was fortunate that it happend at the dealership before I wrote the check - they lubed the bushings and it's been fine since.

You're right, you can hear the creak inside the car...very well!!

Simple fix.
Do it under warranty, who knows what else they may find (if within the 30 days). If they break it, they fix it. Photo first just to be safe-
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Old Mar 23, 2010 | 02:43 PM
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Could also be the A arm bushings....
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