2007 Z06 Corvette Clutch Problem

The subject car has only 945 miles on it.  I don't drive it a lot but start it up to run it.  The last time I tried, I pushed in the clutch and it wouldn't come back up (had to pull it up by hand).  I changed the fluid 3 times with Prestone DOT4 brake fluid until the fluid looked clear, always pumping the pedal by hand.  The pedal is still doing the same thing.  Any advice on how to handle this?
Thanks.  

bleeding clutch hydraulics almost always takes two people....

i have on other cars and trucks spend over half an hour trying to get all the air out of the system...

a mechanic of 50 years one day.. borrowed my pressure bleeder ball...   he went through the 2 gallons of LMA-gt brake fluid i kept in it for doing older british car brakes..  50 bucks of brake fluid..

i have not had to bleed one of these yet...  but all the air bubbles have to be out..

did you see this article about changing clutches in one of these???

http://www.vetteweb.com/tech/vemp_0506_exedy_twin_disc_clutch_install/index.html


http://www.vetteweb.com/tech/vemp_0506_exedy_twin_disc_clutch_install/photo_32.html

Then, with the car in the air again and Tito in it to operate the clutchpedal, John bleeds the air out of the clutch. While Tito presses andholds the clutch pedal, John loosens the bleeder screw on the clutchactuator cylinder to bleed the line. John tightens the bleeder, Titoreleases the pedal, and they repeat the process until all the air isevacuated, making sure the reservoir doesn't run dry



here is a picture of where the clutch slave cylinder is located at...

http://www.vetteweb.com/tech/vemp_0506_exedy_twin_disc_clutch_install/photo_26.html