Richamer1

This just happened and I have not looked at it yet. Driving home pushed in the clutch and it stayed down. Clutch is engaged as I drove the few miles home in third gear. 06 C6 I can pull the pedal up but when I push it down it stays. Maybe something simple just looking to see if this is a common issue. Thanks in Advance.

TorchRedFred

Lots of threads on this. Dealership may fix it free of charge if your car falls under the criteria to meet the TSB. I think your cars needs to be under 10 years old and 120K miles, if I'm not mistaken.

https://www.corvetteforum.com/forums...-to-floor.html

https://www.corvetteforum.com/forums...-pressure.html

https://www.corvetteforum.com/forums...loor-help.html

Landru

Yes it is a common problem, why GM issued an extended warranty for owners providing falls w/in yr/mileage limits.
You probably would qualify for miles at <120K, but an '06 is 2 years too late.

Good news is in the world of C6 repairs, this one's (MC) a cheap fix, even cheaper if a DIY install.
FYI 'new' improved design/materials used in replacement MC eliminate the issue, forever.

dr_gallup

First I've heard about a "new & Improved" MC. When did that come out? Did it make it into any production cars?

919cw313

According to the TSB:

Dealers are to replace the with a revised unit that is more robust against pressure pulses, and that includes a new fluid reservoir with improved labeling for use of proper fluid.

As far as being OE on any cars, I thought I read at one time that it was. However the TSB covers 2005-2013 so I don't know.

gn85

Just happened to me about 30 minutes ago. Fortunately, I had already started the car and started driving when it happened. I'm just glad it didn't happen to my wife. I managed to get the car home. Annoying to happen to a car with only 30k. I'll call the dealership tomorrow. I have a 2010, so I should be covered.

Thanks to the forum for the good info.

jackjohnson_218

Just out of curiosity, how did you get it home?

ttx350z

gn85

I had just enough clutch to shift until I got to the highway. There was literally 1/2" of clutch left. I was surprised that it I had that much. When I got on the highway, there was no clutch travel at all.

From there, I kept it in 6th the ENTIRE way home. Clever driving, good handling around a few exits and no traffic lights or stops. I got lucky.

I just went outside and pulled the clutch pedal up and pushed it back down. It stayed down, but did allow me to start the car and move it. Again, I had maybe a 1/2" travel and that moved the car.

I'm calling the dealership in the morning.

Landru

Different/improved material used w/ seals, IIRC failed seals allowed blow-by causing this issue, why fluid was always black.

Guessing when GM got fed-up replacing 'em *&* before NTSB got involved.
Funny thing about this warranty was unless owner complained nothing would be done, it was not a formal recall.
Anyway after learning this here I complained and it was done at no cost on my '08 in '14.

I'm sure it did, only question's what MY so guessing '12-'13 & possibly earlier.
Salient point being if a C6 is w/in 10 yrs/120K MC's covered, just have to ask/complain to dealer.
And, it'll be w/ the upgraded component.

Richamer1

919cw313

^ Good question. It seems like every online seller has a different answer. Maybe check in person with your local dealer?

ttx350z

TorchRedFred

The search function is a great tool. Old posts or threads, if nothing else, are valuable for their educational contributions. Even if someone doesn't qualify for the TSB, it's still beneficial to educate one self as much as possible to make more informed decisions. It hasn't happened to me yet (clutch to the floor), but if or when it does I will be much better prepared thanks to this forum and its members.

z06clif

the fix frm GM was replacing the MC with a new one from the ZR-1. Its black amd doesnt show how dirty the clutch fluid is

Clif

ttx350z

extrapilot

The second one, 19331709, will have the black fluid reservoir.

Landru

Pretty cynical there clif, what'd GM ever do to you.

All I know for certain is the MC is improved vs ones in earlier MYs.
Plausible it'd be from ZR1, which didn't exist pre-'09.
Good clue re when GM started using it though, '10 the very earliest.

Ron'sGS

disney7

They won't replace it preemptively, I've asked in passing at a few different dealerships. They told me it pretty much has to be towed in with the clutch pedal on the floor.

I have a 2011 Z06 and I'm thinking about replacing it myself as I'd rather spend the $140 and time than be broken down somewhere. I also ran across the two part numbers and the confusion about which fits what.

If you look at QuirkParts, it lists them as:

19331708 - Corvette. Without supercharger
19331709 - Corvette. With supercharger.

I'm not sure if that is completely accurate though. It would be nice to know what the real difference between the two parts is. I wonder if it might just be the reservoir color.

I also wonder if you can get away with replacing the master and not bleed the system. I know it seems to self bleed to a certain degree. I also noticed that the new part assembly appears to come full of fluid with a cap on the end. I haven't tried bleeding the clutch but I hear its a pain to get to the bleeder, so I wonder if filling up the reservoir and line are an attempt by GM to avoid bleeding them when replacing.