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Cadillac CTS Maintenance and Repair

77 messages,  Last post on Nov 22, 2009 at 10:46 AM

You are in the Cadillac CTS/CTS-V Forum. Your Hosts are pat & karens

What is this discussion about? Cadillac CTS, Cadillac CTS-V, Auto Repair, Engine, Oil, Sedan


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#68 of 77
Re: 2007 Making Noise when turning [junet] by robh3
Nov 14, 2009 (2:22 pm)
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Replying to: junet (Nov 12, 2008 8:18 am)

I experience the same noise that appears to be a rubbing of the tires when making tight turns at low speed. Can't seem to verify what it is exactly. But I have a theory.
 
Mine is an '06 CTS with the sport package option including 18" wheels and different Bridgestone tires. (Just under 16k miles and the tires do not have excessive wear).
 
I notice the "rubbing" noise when leaving home in the morning and when pulling into the parking spot at work. I actually believe it might, and I repeat the word "might", be caused by the inboard rear tire (i.e. when turning to the right; the right rear tire) rubbing on the epoxy-type painted surface of the parking garage floor of the building I work in. Then when i get to work - they recently re-sealed the whole parking lot with blacktop sealant - I think that's causing the rubber tire to make that rubbing noise at slow speeds over the epoxy sealant when turning sharply into a parking space.
 
Sounds strange, but I believe - or at least I want to believe - that is the cause. The CTS has a very tight turning radius compared to most vehicles (which is a really convenient thing). When turning sharply at low speeds, that means the inside rear tire is actually turning somewhat on its axis rather than just rolling forward over the road surface. Hence, this could be the cause, or at least "a" cause, for the rubbing noise, because the tire rubber is actually being rubbed against the surface its on with these tight turns. Very few vehicles of this size have the tight turning radius the CTS has (not sure if the '08 and newer CTS' have the same tight turning radius).
 
Rob
#69 of 77
Re: 2007 Making Noise when turning [robh3] by junet
Nov 16, 2009 (8:00 am)
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Replying to: robh3 (Nov 14, 2009 2:22 pm)

Rob, I did take my car to another dealer and they told me that it was the fluid in the rear end that needed an additive. They changed the fluid and added what ever and the noise went away for a about 6 months. NOW its back and worse. I do not believe its the tires at all. I have replaced mine since. I have to make another appointment again and its a real pain for me because I have to drive about 50 miles to a dealer.
June
#70 of 77
Re: 2007 Making Noise when turning [junet] by robh3
Nov 16, 2009 (11:26 am)
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Replying to: junet (Nov 16, 2009 8:00 am)

Interesting. Mine seems to be intermittent. Didn't do it this morning pulling out of my building's garage, but it did it when pulling into a parking spot at work.
 
Do you have you copy of the the dealer service form/receipt from when you had the fluid added 6 months ago? I am curious if they wrote in what fluid they added. The more details I have, the more I can just tell my dealer "do this". I'm assuming it'll be a warranty job...
 
Rob
#71 of 77
Re: 2007 Making Noise when turning [robh3] by junet
Nov 16, 2009 (11:52 am)
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Replying to: robh3 (Nov 16, 2009 11:26 am)

Yes I have the receipt and will have to get it out of a file. Yes it was warranty work done no charge. Mine didn't do it all the time either, in fact it wouldn't do it while I was there but the guy said he knew what it was. Now it does it all the time.
#72 of 77
Re: 2007 Making Noise when turning [junet] by robh3
Nov 16, 2009 (2:01 pm)
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Replying to: junet (Nov 16, 2009 11:52 am)

I see. Good to know it was warranty work.
 
If you are able to find the work order in your files it would be helpful to know what they wrote down that they did (although the fact that it only lasted 6 months is discouraging).
 
If the guy at the dealer knew what it was then it's apparently a relatively common issue with the pre-'08 CTS model.
 
Thank you.
 
Rob
#73 of 77
Re: 2007 Making Noise when turning [junet] by pao
Nov 18, 2009 (5:43 am)
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Replying to: junet (Nov 16, 2009 8:00 am)

if the dealer changed the fluid....and added the additive....my question is have you had any other differential fluid changes done....if you have an LSD...and Im betting you do...and you had a fluid change out and the LSD additive was added in with the change...then you probably have some differential wear....and that what might be causing the rubbing sounds....it might also be the clutch packs in the diff as well....
 
the rear difs were a weak area in the early model CTS's....and carried over into the 06-07 MY Pontiac Solstices...which use the same rear diff.......08 and beyond seem to correct the problem.....Im betting it is the rear differential.....
#74 of 77
Re: 2007 Making Noise when turning [pao] by robh3
Nov 18, 2009 (6:59 am)
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Replying to: pao (Nov 18, 2009 5:43 am)

Brought the car in today for an oil change. Mentioned the rear "rubbing" sound. The service manager knew exactly what I was referring to, and mentioned the LSD and clutch packs, etc. and need for a fluid change and additive.
 
So, we added doing the rear end fix job to the list. He said it works on 8 out of 10 vehicles, and if not, then the rear diff. needs to be replaced (all warranty).
 
Obviously a known issue, and at least they own up to it and will address it under warranty. Driving a brand new DTS loaner car in the interim...
#75 of 77
Re: 2007 Making Noise when turning [robh3] by pao
Nov 20, 2009 (5:33 pm)
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Replying to: robh3 (Nov 18, 2009 6:59 am)

at least the service manager is competent and is aware of ongoing issues.....Im betting you will end up with a new diff...keep us advised..
#76 of 77
Re: STS 2005 by jimm243
Nov 22, 2009 (8:53 am)
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Replying to: hosa24 (Feb 26, 2008 7:15 am)

I bought a 2005 STS for my song, and it has the same problem as all of yours, it uses oil like crazy. Maybe if we get enough people and signatures from people with the same problem we might get a legal case against GM and get the rightful recall we deserve. please let me know what do you think
#77 of 77
Re: 2007 Making Noise when turning [pao] by robh3
Nov 22, 2009 (10:46 am)
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Replying to: pao (Nov 20, 2009 5:33 pm)

So far so good with the fluid and additive work. No noise. I will certainly be bringing it back in if, and as soon as, the noise returns.

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