Two or three thousand miles for me. Good luck.
Differential flush
Thread Starter
Cruising
Joined: Jun 2007
Posts: 12
Likes: 0
From: Sacramento Ca
Differential flush
hey guys i finally got my c6 from the dealer earlier today but was quickly disappointed again as i started hearing awkward noises coming from the differential once again.
I took it in to the dealer because of the problem with the differential. They ended up just flushing and refilling the diff fluid twice and said it no longer made the noises.
After driving it for about 2 hours i started to hear the same type of noise again coming from the differential.
Im planning on taking it back tomorrow. Kinda pisses me off that a DEALER would do temporary fixes.
btw i still have my factory warranty
Im planning on being really **** about the noise and will try to get them to repair the problem permanetely.
This isnt my first C6 i didnt hear any type of noise such as this in the previous ones.
Was planning on getting an extended warranty but after the way ive observed the way dealers handle certain situations it just seems like a waste of money.
My buddy has an 06 c6 with a bad tranny. dealer refuses to cover under warranty stating he "ABUSED IT" they said they conlcuded that after feeling the clutch pedal
. He has now turned it into a legal matter.
who buys a super car not to push it once in a while...
I took it in to the dealer because of the problem with the differential. They ended up just flushing and refilling the diff fluid twice and said it no longer made the noises.
After driving it for about 2 hours i started to hear the same type of noise again coming from the differential.
Im planning on taking it back tomorrow. Kinda pisses me off that a DEALER would do temporary fixes.
btw i still have my factory warranty
Im planning on being really **** about the noise and will try to get them to repair the problem permanetely.
This isnt my first C6 i didnt hear any type of noise such as this in the previous ones.
Was planning on getting an extended warranty but after the way ive observed the way dealers handle certain situations it just seems like a waste of money.
My buddy has an 06 c6 with a bad tranny. dealer refuses to cover under warranty stating he "ABUSED IT" they said they conlcuded that after feeling the clutch pedal
. He has now turned it into a legal matter.who buys a super car not to push it once in a while...
Last edited by THE FREAK; Jun 20, 2007 at 02:26 AM.
Melting Slicks
Joined: Sep 2004
Posts: 3,488
Likes: 27
From: Long Island NY
Sounds like you have an "abnormal" differential noise which will require extra attention. So don't be TOO hard on the dealer here because in my opinion they did the "best" thing for you so far. Unfortunately it looks like they will now need to start taking things apart.
In my car, a mere flush completely stifled my loud differential noise... and that was with non-synthetic GM oil and only 4 ounces of additive. Been quiet now for about 2k miles or so. Seems that "most" other C6s have responded the same way.
Please report back the final outcome of your differential noise fix.
Melting Slicks
Joined: Mar 2001
Posts: 2,117
Likes: 1
From: El Paso TX
Melting Slicks
Joined: Sep 2004
Posts: 3,488
Likes: 27
From: Long Island NY
Don't think we've yet read any "long-term" reports of the results of a flush using 8-ounces of additive (per the latest TSB). It's possible that this trick may yield way more noise-free miles than we've been seeing with mere 4-ounce flushes. Time will tell. I'd be happy getting a good 10k noise-free miles out of a flush... hopefully the 8-ounces of additive will do the trick. A flush every 10k miles is not too much of a pain. An interval less than that starts becoming a bit annoying though IMO.
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Melting Slicks
Joined: May 2006
Posts: 2,324
Likes: 0
From: MN
I recently had mine done - they used 8 oz of add. on mine. No issues. Could part of the problem be not working the lube into the diff right after getting the work done? My mechanic didn't take the car out and do slow figure-8's - he just gave me the car back. I know the TSB says to make several slow runs to work the stuff in. Could that be an issue?
Burning Brakes
Joined: Oct 2006
Posts: 1,199
Likes: 0
From: Evans Georgia
Burning Brakes
Joined: Oct 2006
Posts: 1,199
Likes: 0
From: Evans Georgia
I recently had mine done - they used 8 oz of add. on mine. No issues. Could part of the problem be not working the lube into the diff right after getting the work done? My mechanic didn't take the car out and do slow figure-8's - he just gave me the car back. I know the TSB says to make several slow runs to work the stuff in. Could that be an issue?
I did the slow figure 8s SEVERAL times....however, the noise is back.
Bow-Tie Guy
Joined: Dec 2004
Posts: 1,057
Likes: 30
From: Chesapeake VA
Safety Car
Joined: Oct 2004
Posts: 3,786
Likes: 0
From: Pleasanton California
Had mine done & the noise was gone...except for a very very slight occasional noise still in 1st if I have the clutch halfway engaged going real slow. It is slight enough where I just can't see making an issue out of it at this point. I am always listening though in case it gets worse, and in that case I'll schedule another appointment.
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
About 6500 miles, rear started making noise. Took it to the dealer and they said no flush but simply added a second bottle of friction modifier. They said give it a couple of weeks and see if it quiets down. I believe it is working. The noise is just slightly noticeable and only when it's cold. I believe the noise will be completely gone in another 200 miles or so.
Melting Slicks
Joined: Jan 2006
Posts: 2,713
Likes: 0
About 1500 miles on my first flush. Got it done with ~ 37K on the clock.
Beforehand, was clunking horribly when backing up cold, and then ultimately, even when rounding normal corners.
The flush did not ever completely make it silky smooth, so I was worried it would rapidly deteriorate and get back to unbearable. But so far, it has maintained a *very* slight 'hitch' it kept following the flush, but no audible noise, no 'clunk' when backing, and generally, quite livable and not getting detectably worse so far.
Still have fingers crossed, tho'
Beforehand, was clunking horribly when backing up cold, and then ultimately, even when rounding normal corners.
The flush did not ever completely make it silky smooth, so I was worried it would rapidly deteriorate and get back to unbearable. But so far, it has maintained a *very* slight 'hitch' it kept following the flush, but no audible noise, no 'clunk' when backing, and generally, quite livable and not getting detectably worse so far.
Still have fingers crossed, tho'
