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An issue that I just noticed yesterday...

Just some background info... my vehicle is a stick shift Z51 that just passed 1000 miles. Driving it home on 12/8/13 as I was backing it into the garage, I noticed that my steering wheel was really hard to turn (almost felt as if it had no power steering) and notice that I had a "service rear axle" warning in my dash. Shut off the car and went to bed.

Next morning, I started the car and see that the warning light was no longer there. Called a local dealer and was told to bring the car over and they will take a look at it. Brought it to the dealer and they said they will see what codes are stored in the computer.

Got a call the a day later from my adviser saying they found some codes in the vehicle but was told that it was some thing related to the communication between the modules and that a reflash took care of the issues. He told me he wanted to keep the car for an extra day just to make sure everything was ok.

Got a call the following day from adviser that everything was taken care of. So I went to pick up the car. Adviser told me that they checked the differential fluid and notice it was a smudge on the low side, so they topped it off. He also said they reflashed the ecu and solved the module communication problems. I got in the car to drive off, engaged the clutch, put it in reverse and gave it some gas to back out of the parking space. As I let off the gas and engaged the clutch again to shift to first, I heard three clicking noises coming from under the car right as I engaged the clutch. I was able to duplicate the noise again in the parking lot of the dealership. As I have never heard this noise before, I asked a tech to check it out. Drove it around the block with the tech in the passenger seat. I was able to duplicate the noise only once, which he also heard. But by that time, the noise was a lot less pronounced. The tech told me that its normal drivetrain noise and said I should not worry about it, so I left the dealership.

In my drives today, I notice that the sound only occurs when shifting between low gears and only at very low speeds (might due to the fact that shifting at higher speed, the sound is blocked by road noise) Furthermore, the sound only occurs as the clutch is being engaged immediately following being on the gas (no sound when shifting from neutral to first or neutral to reverse from stopped). And the sound is louder when the engine is cold.

I'm worried that this sound is not normal, especially since I haven't noticed it before. But I might just be paranoid as I just got it back from service. So I'm seeking some guidance and advise and want to see if anyone can shed some light as to what it might be. If anyone else have heard this in their vehicle, please chime in.
 

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My car has over 3000 miles on it now and I've never heard the sound you are describing. I don't know that I would let the service dept. say that something is normal that you have never heard prior to 1000 miles or so. Make them look at it again.
 

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I don't wish to create any additional worries for you, but it is possible that the noise you are hearing is from the torque tube. Perhaps our other owner who had problems with his can help you determine if that is what you are hearing or not? Regardless, make sure you keep a record of what you have heard, and what the dealer has said / done. I can tell you that other owners have had issues with this component on their car.
Here is a link to a thread that has a video clip, I think it was the 3rd post in the thread. Please make your own entry into this thread so everyone can see how your issue goes.

http://www.stingrayforums.com/forum...cial-c7-corvette-issue-resolution-thread.html

This owner has an auto. tranny in his car. Again I am not sure if this is your issue, just trying to help you sort it out.
 

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Discussion Starter #4
Thanks for the input guys. Chip, thank you for the link to the torque tube problem, after watching that video, I am glad to say that my car doesn't have that problem. I am going to drive my car for a couple of more days and if the sound persist or gets louder, I will take it to a different dealer and get it checked out.
 

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Hi Chip, this is about 10 months after the fact and does not quite relate to the issue, but I have been experiencing some high pitch squeeling noises when double clutching down at speed. I am thinking throwout bearing or some problem with the Torque Tube. I have an appointment to take it in next week and I have talked with a tech who advises that it could be many things and they will do a thorough check by elimination of possibles and then hopefully come up with a problem and solve it. The car has approx 3,000 miles on it and has been trouble free up to this point. I have also detected some slop or slackness in the drive train through the Torque Tube and perhaps it is related. I will come back and advise what has been found when they have checked and re & re'd the problem. Any one have any ideas on this? I hope I have explained it well enough that you know what I am talking about. The noise does not appear when RevMatching.


STUNG:confused:
 

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Why are you double clutching? That does nothing but put more stress on the syncros. Regardless, looking forward to find out what your issue might be.
 

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Had 2014 Z51 7 spd I beat the snot out of that car waiting for my new Z. After about 1000 miles I started hearing the clicking noises you are speaking about under car. Kind of Sounds a little like something in the spokes of a kids bicycle. Wasn't sure if it was the clutch or the rear. Didn't care ..traded car in with 3200 "HARD"miles

@3300
Zo6
3LZ
TR
7sp
AR / CF dash
Black rims
TPW 11/10
 

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Stung; It might well be the torque tube, and I would guess it is a flex plate related issue. There is a problem with my diagnosis though. I would not think that issue would be limited to a "cold" condition only problem. In any case, please do give us an update after your service visit and good luck!
 

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Thanks Chip I was kind of thinking the same after reading previous issues etc. Especially with the torque tube. I will keep you informed. As I hope I will be.

mjw930: Old habits are hard to die and I have always done this since the 60s and have never had a throwout bearing go before. So I am hoping. I tried the rev matching and I was not comfortable with it. I actually instingtively double clutched even when the rev matching was engaged. geees what a dummy hahaha!!!

STUNG:rolleyes:
 

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Thanks Chip I was kind of thinking the same after reading previous issues etc. Especially with the torque tube. I will keep you informed. As I hope I will be.

mjw930: Old habits are hard to die and I have always done this since the 60s and have never had a throwout bearing go before. So I am hoping. I tried the rev matching and I was not comfortable with it. I actually instingtively double clutched even when the rev matching was engaged. geees what a dummy hahaha!!!

STUNG:rolleyes:
Nah, no dummy, just muscle memory. Hope they figure it out.
 

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I know this thread is really old but I'm noticing this same thing.

Clicking noise when releasing the clutch in first gear, coming to stop, especially noticeable when it's cold.

Didn't see the resolution above, does anyone else have this issue?
 

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Just had service advisor go for a drive with me and they say the clutch noise is normal. He claims if the dampener had excessive play it would be noticeable all the time not just when its cold.

They know about the other issue where the wheels make clicking sound and they'll take them off and clean everything.

Getting oil changed as well. I've asked to fill up 9qt and let me have 1qt and they're cool with it.
 
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