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Old 12-05-2014, 10:44 AM   #1
DarthZ
 
Drives: 2013 ZL1
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Noise when turning at low speeds :(

Hey guys. I've almost had my Z for a year now...About 6 months ago I started hearing this faint creaking noise when I'm taking relatively sharp turns(Ex: maneuvering through a parking garage). I started hearing the sound a little after I got my corsa exhaust installed, but since then I have taken it back to the shop assuming it was something to do with the exhaust, but they didn't find anything. I also took it to a local dealership and they told me it was normal due to the way the ZL1 axles are made. Since it has started getting colder outside, the sound is a little more noticeable. I'm not really sure what to do about it. Is it normal? If not ,is there anything I can look for to try and diagnose the problem myself?
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Old 12-05-2014, 11:00 AM   #2
JANNETTYRACING
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Originally Posted by DarthZ View Post
Hey guys. I've almost had my Z for a year now...About 6 months ago I started hearing this faint creaking noise when I'm taking relatively sharp turns(Ex: maneuvering through a parking garage). I started hearing the sound a little after I got my corsa exhaust installed, but since then I have taken it back to the shop assuming it was something to do with the exhaust, but they didn't find anything. I also took it to a local dealership and they told me it was normal due to the way the ZL1 axles are made. Since it has started getting colder outside, the sound is a little more noticeable. I'm not really sure what to do about it. Is it normal? If not ,is there anything I can look for to try and diagnose the problem myself?
There is actually a bulletin on this they have to change the rear differential fluid and do figure 8s in a parking lot and repeat 2 times, I just got mine in the mail.

Seems the Old Positraction sticky clutches are to blame ala 1970 corvette.

Ted.

Ted.
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Old 12-05-2014, 11:04 AM   #3
jon6.0
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Son of a b*tch. My local dealer made me pay for my own differential fluid. What's the bulletin number Ted? I'm getting a darn refund.
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Old 12-05-2014, 11:18 AM   #4
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Son of a b*tch. My local dealer made me pay for my own differential fluid. What's the bulletin number Ted? I'm getting a darn refund.
Can't post the link to the z l 1 registry
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Old 12-05-2014, 11:44 AM   #5
Kevlar382
 
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Go to your dealer. There are two different bulletins on this. One is for non ZL1s and one for the ZL1s. Mine started to do it just before I put in storage, when it started to get colder out. You will get your money back.
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Old 12-05-2014, 01:38 PM   #6
Whos_Drivin
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Do you have headers too? Could be rubbing on steering knuckle or passenger side frame rail slightly.
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Old 12-05-2014, 04:08 PM   #7
jon6.0
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Go to your dealer. There are two different bulletins on this. One is for non ZL1s and one for the ZL1s. Mine started to do it just before I put in storage, when it started to get colder out. You will get your money back.
I'm going Monday. They need to replace the coolant vent hoses anyway. Mine is leaking.
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2011 C6, 750rwhp, forged LS3, ported LSA heads, Vortech Ti-trim, 227/243 115+4 Lunati cam, ported LS3 intake, Alky Control methanol, Pfadt sways/shocks/trans mounts, Pfadt tri-y headers(Sold 6/28/14)
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Old 12-09-2014, 05:17 PM   #8
barlowcw
 
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Got a noise too and can feel it-backing up then turning sharp

2014 ZL1 2000 miles, when it got cooler:

When backing up the drive way then turning sharp right or left the car jerks and makes a noise.

Testing, when I take the car for a short interstate ride to next exit and back, test again back up drive make sharp turn... no jerk and no noise.

Could this be the cause the rear end clutches sticking etc as you mentioned?
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Old 12-09-2014, 06:30 PM   #9
boondocksaint
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Sounds exactly like cold diff stickiness to me.

I owned an Impreza STi for a couple of years. Three diffs in that, and boy when it got cold you could feel the two mechanical diffs just chattering away. It had the turning radius of the QE2, but it was lots of fun to drive...
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Old 12-10-2014, 08:27 AM   #10
DarthZ
 
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So the noise can be fixed by a simple fluid change and figure 8s?
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Old 12-10-2014, 08:31 AM   #11
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Would they fix this even if your car is modded? Or is it a regular warranty issue?
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Old 12-10-2014, 08:37 AM   #12
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Quote:
Originally Posted by barlowcw View Post
2014 ZL1 2000 miles, when it got cooler:

When backing up the drive way then turning sharp right or left the car jerks and makes a noise.

Testing, when I take the car for a short interstate ride to next exit and back, test again back up drive make sharp turn... no jerk and no noise.

Could this be the cause the rear end clutches sticking etc as you mentioned?
Yes sir.

Quote:
Originally Posted by DarthZ View Post
So the noise can be fixed by a simple fluid change and figure 8s?
Yes sir.

Quote:
Originally Posted by DarthZ View Post
Would they fix this even if your car is modded? Or is it a regular warranty issue?
Yes sir.
__________________
Technical information, Parts Sales, Professional Installation, and Custom Dyno Tuning.
Please vist our web sites for all your performance needs!
Ted Jannetty
Jannetty Racing Ent Inc.
2984 East Main St.
Waterbury Ct. 06705
203-753-7223
tedj@jannettyracing.com
www.jannettyracing.com
www.turboaddictionparts.com
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