Clutch Pedal hard to push (sudden occurence)

[logdrum]

Hi. I got stuck at the airport today bringing my cousin. After dropping her off, The truck suddenly was hard to shift. As if the hydraulic fluids were low. I parked it to hang with her and when I restarted it got even harder to shift. I stopped to check for any leaks and when I amtempted to start the second time. The clucth was hard to depress that it cannot make contact with the starter safety switch. I had to get it towed to my mechanic because the airport police wanted it out of there. So the problem just manifested in a period of 15 minutes. What could have gone wrong with it.

Slave cylinder? Doesn't that go progressively. This just happened from normal, to too soft to hard to push at all. The tow driver though that was strange too and he had the same superduty.

I do NOT see any leaking fluid. Brake fluid level is good, (just a hair below the MAX line) . No CEL or idiot lights. Nothing blocking the pedal and the spring seems to be in the right place but I do not really know.


Thanks in advance!

Noel