Clutch problem?

Hi, I have a 2005 saturn vue awd van, 3.5L V6 engine has been running perfectly until a couple of days while on the road when I stopped and then had to revolutionize much speed for movement, the moment I stopped returned again and not moving.

the vehicle must be switched off briefly and then on again to return to work, besides it makes a strange sound (like a car mechanic is not pressed the clutch to get good speed) and has an almost constant buzz.

may be solved with something like a master rebuilding kit.

I can do?