On my way to work today, my clutch lost all pressure and I was unable to shift gears while my vehicle was running. I was stuck on the side of the highway. I first thought that is was just low fluids, but fluids are full. My other thoughts are master/slave cylinder or the pressure flange has cracked, but I'm not leaking any fluid. Could it be a block in the hose from the resivior to the cylinder? Thanks in advance for your help. Manual trans 08 sport 4x4. Any one have any suggestions?