mikeo

I have read a few posts about clutch pedals being stuck to the floor after hard acceleration. Happened to me for the first time last night. Was I just riding the clutch too much or do I need to have something replaced? If the latter, does anyone know whether this is covered by a service bulliten? Many thanks (because this kinda freaked me out).

BTW, if it matters, I have an 04. Thanks again.

chiefDave

MikeO.
I have seen it on my 01, but only at the track when I am launching hard at too high an rpm. It seems like 3500 and a fast, not dump is the way to go, and 4000k on a track that is prepped well. Don't know about a TSP, but I thought there was a fix on the older cars: 04 Z parts. My car is out of warrenty so I am thinking bigger stiffer clutch and 04 Z parts but if your car is doing it now????? I will follow your post and hopefully someone will chime in.
Dave
PS discovery channel has a C6 special on, so much for washing, waxing and then the track next hour!

Z06ufgrad2002

MIne did for the first time last week and I got caught in the heavy stop and go traffic during the last hurricane. I am relatively certain it was caused by the clutch getting too hot.

I would like to see a copy of the TSB on this and take it to the dealership when my car goes in for warranty work again.

All I could find was this:

TECHNICAL SERVICE BULLETIN: MFG Bulletin Number: 051602

MFG Bulletin Date: 20020516

Component: POWER TRAIN:CLUTCH ASSEMBLY

Details: COMPLAINTS OF THE CLUTCH PEDAL NOT RETURNING WHEN DEPRESSED. *TT

MCS Check Date: 20030805

dvandentop

i would like to know as well

Geneus

Here is the "fix" for the sticking clutch pedal.. it's spelled EXEDY!

blown06

I've had the same problem since I installed my magnusson supercharger that I purchased from Lingenfelters'. It used to do it very often due to the pressure plate. So I gave Daniel a call at Spec Clutches and he sent me a Stage 3 clutch with an aluminum flywheel. Since that day it hasn't hapenned once. Great service and pricing from Spec.

mikeo

Can you please explain "EXEDY"? Thanks.

Z06ufgrad2002

I think he was yanking your chain.
He is suggesting replacing the stock clutch with the aftermarket Eexedy clutch. And as much as I may agree with him that the Exendy is a fine clutch. I don't feel that we as consumers should have to pay to replace a clutch that is failing due to poor design or quality control on GM's part. If GM is willing to pay for the labor costs; I would be willing to pay any additional amount above the OE clutch to get the Exedy put in. But, I don't think the General is going to go for this.

Geneus

I couldn't agree with you more. I had posted this in another thread a few weeks ago, but I guess I'll say it again. I found out less than 2 months after I had my Z just how weak this clutch is. I just decided one day to do a stand-still punch and phew..clutch burn. And believe me, I am not a crazy driver, so my clutch had been babied up to this point.

I guess what I'm saying is that the weak link in our Z's is this clutch. Some people have had some longevity with their clutch in their Z's, while others (like myself) have decided to take matters in to their own hands (and pockets) and solve the problem. It is a shame that GM "cheaped out" and didn't put a clutch in worthy of this 405 bhp engine...but so be it.

SilverStateZ06

Cartek is your answer, so long as you don't mind a high performance clutch package.

dvandentop

cost???

chiefDave

Seems like changing the fluid very often helps too. I change mine almost every time before I go to the track and it helps. Damn, I was hoping LTs would be next but it seems like a cluthc is next. Thanks!
Dave

mqqn

Hi mikeo -

I just took m y 02 to my dealer to have the same problem addressed - I gave the service manager the print of the tsb that someone here provided me a few weeks ago - and he kept the car for the day.

They ordered a new slave cylinder and master cylinder for the clutch - he called me today to say that it was in and he could get the car done anytime.

I will let you know if this fixes the problem.

I only notice this when I rev it to redline and shift - and I notice no slippage at all at any time.

best regards -

mqqn

T_Vert

where can i find a copy of that TSB? My dealer needs one too

dave

Cruncher

Your dealer needs a copy of a GM TSB???

Dr.Ron

mqqn

Hi TT_Vert -

Just call your service manager and tell him about the problem you are having. Tell him that your clutch pedal does not return under hard, high RPM shifting.

Here is the info repeated from above in this thread.

The service manager at my dealer did not find this TSB number, but he did find something to this effect on the dealers computer.

They replaced the clutch master and slave cylinders, which involved removing the torque tube and transaxle etc. Not for the weak of heart, but you do get to inpect the components pretty closely. What I thought was a leaking seal on the differential was actually just oil blown out of the breather on the top of the unit.

BTW - You could have a heavy clutch installed at this point for little additional $ if you have a good service manager...

The work was done under warranty, at no charge, on my 34k mile 2002 Z06.

I have not had any more "clutch pedal on the floor syndrome" since this was addressed on my Z.

That said, the problem did not manifest itself until I had 20k miles on the car or so. I am suspicious that I may run into this again at 60K miles, but I'll cross that bridge when I get there.

best regards -

mqqn

johnC5

The stock parts should work fine on a stock Z06 (re: EXEDY, Spec, etc., which are good for higher HP cars). Clutch slave vibration is stated to cause aerated clutch fluid, resulting in a stuck clutch.

Here is a link to the VME (not TSB):

http://forums.corvetteforum.com/show...ght=TSB+clutch

See C5-TECH's post.

Make sure the new clutch assembly is properly balanced. See also: http://forums.corvetteforum.com/showthread.php?t=934650

I spoke with a Z06 owner who had the sticking clutch problem fixed: his clutch pedal vibration was also fixed after the repair.

hotrod323

I road race my Z and had the same problem. The dealer was no help,in fact they voided my warranty because of the harness bar in my car. I changed the fluid in the master cylinder to ATE Super Blue Brake Fluid ( many of the Porsche road racers also use it) and drilled several holes in the lower half of the bellhousing to vent the hot air out of the clutch area (the two small vents on the bellhousing are not enough). Since I did this the problem has disappeared. I believe the design of the clutch which incorporates the slave cylinder inside of the bellhousing causes the clutch fluid to overheat when used hard, which leads to the slave cylinder sticking.

Z06JAX

I went through this on my 01 Z06. The GM warranty solution was to replace the master cyl, slave cyl, flywheel, pressure plate, and clutch disk. GM sent the dealer a "kit" containing those parts. No problems since the change.