Z06Vette.com - Corvette Z06 Forum

Tailbiter · 10-04-2006, 11:18 PM

The car has never sounded better. Literally, not one noise coming from the rear end since the repair.

foosh · 10-23-2006, 10:47 AM

Same here. Rear end is now completely silent after the new clutch packs.

bjaber · 10-23-2006, 11:16 PM

Ditto... just took for it's first "spirited" ride tonight since I got it back from the dealer last Monday (been a busy past week).

When backing out of the driveway cold and turning the wheel...nothing. U-turn with steering dead locked to the left...nothing. Parking lot turning...nothing.

**johniew398** · 09-15-2007, 08:35 AM

Quote:

Originally Posted by johniew398

I was going to post a new thread but this looks like the problem I'm having.

When taking off I hear a distinct clunking type sound coming from the rear but just in 1st & 2nd gears.

And I'm interested too if there is a service bulletin out on this??

Ok, almost a year later and I finally followed the TSB and had them replace the rear end grease and add the additive. The first time I called my dealer a guy I normally don't deal with said that TSB's weren't covered under the warranty. When I picked up the car my regular service advisor had had the work done and charged GM $126 under the warranty.

I've only had it back one week and have only heard the chatter one brief second, so we will see but it definitely has quietened it down.

Dean Gittleson · 09-16-2007, 08:21 PM

My 06 Z06 had noise and handling issues from the transaxle. I had multiple flushes and a clutch pack replacement. The result was less noise but a left to right slewing during straight line acceleration. The transaxle was replaced at 19k miles and there have been no prolems since.

Dragon · 09-17-2007, 04:52 AM

Quote:

Originally Posted by johniew398

Ok, almost a year later and I finally followed the TSB and had them replace the rear end grease and add the additive. The first time I called my dealer a guy I normally don't deal with said that TSB's weren't covered under the warranty. When I picked up the car my regular service advisor had had the work done and charged GM $126 under the warranty.

I've only had it back one week and have only heard the chatter one brief second, so we will see but it definitely has quietened it down.

My dealer fixes all TSB's at no cost to me. They even replaced the seat cover on the driver side where the seat belt tore it.

Since the flush and fluid change didn't help I had the clutch packs put in this spring and there has been no chatter since.

C5_Z06er · 09-24-2007, 04:14 PM

is this kind of problem only in 2006 Z's or anyone has encountered a similar problem with 2007/ 2008 Z ???

Dragon · 09-25-2007, 11:30 AM

Quote:

Originally Posted by C5_Z06er

is this kind of problem only in 2006 Z's or anyone has encountered a similar problem with 2007/ 2008 Z ???

Edmunds list it as a problem for the 2007's but not for the 2008's.

http://www.edmunds.com/maintenance/MaintenanceServlet

**johniew398** · 09-29-2007, 05:19 AM

It has been three weeks since I had had the rear end diff lube replaced and only heard the chatter once since then.

GOLD72 · 10-08-2007, 05:46 AM

My dealer changed the diff fluid last spring at about 10k miles. He pointed out to me that it was noisy. I had been ignoring it. The fluid change worked for a while but now at 18k miles, the chatter is back worse than before. I am going to change to AMSOIL Severe Gear Synthetic EP 75W90 + their slip lock additive and do the job myself in a last ditch effort to avoid clutch pack replacement.

Anyone else DIY differential fluid change on a Z?? Any helpful advice?? I already have a 10mm allen head socket for the fill plug. A spring clip apparently holds the pump inlet tube at the carrier bottom quick disconnect fitting where the drain is located.

Thanks.

GOLD72 · 10-16-2007, 11:02 AM

I did the diff fluid change last Friday afternoon. Used two qts & ~12oz of AMSOIL Severe Gear EP 75W90 and about 5 ozs of their Slip Lock Additive. I did my figure 8s afterward. The chattering is gone and gone immediately. Will this be the long term solution?? Only time will tell for my daily driver.

DLong · 10-16-2007, 01:11 PM

JCENG
To reply to the question you asked about the base model and Z06 model clutch packs the answer is no. The Z06 comes with carbon fiber plates and stronger bellville springs. The other vettes (coupes and convertible) and C5 vettes come with sintered bronze clutch plates. The also have a different set of bellville springs. As for a fix I am sure GM is working on it. You can bet they don't want the Corvette community upset.

GRSZ06 · 10-16-2007, 11:08 PM

Mine went in this morning for clutch packs. It IS covered by the warranty!! So was ash tray door fix and rattle in shifter...both replaced no charge.

Dragon · 10-17-2007, 06:27 AM

Quote:

Originally Posted by GOLD72

I did the diff fluid change last Friday afternoon. Used two qts & ~12oz of AMSOIL Severe Gear EP 75W90 and about 5 ozs of their Slip Lock Additive. I did my figure 8s afterward. The chattering is gone and gone immediately. Will this be the long term solution?? Only time will tell for my daily driver.

Replacing the clutch packs is the only long term solution.

Shadowtrap · 10-27-2007, 06:51 PM

I work for a Chevy dealership. There was a change to the TSB a little while ago. They went from 1 bottle of additive to 2. From what I have seen it is working. The first flush never works. It is normally fixed by the secound.