I'm working on a 2001 Chevy Express van with a 5.7 L engine. The cruise control cable has disconnected itself twice at the carburetor and after the first time the operator noticed that the engine seems to be making more noise (like its always in passing gear). The engine sounds as if its in an accelerated mode when driving. I have noticed that the passing gear seems to kick in more often and quite frequently.

Can the end of the cruise control cable be changed without changing the entire cable?

Any suggestions on what might be causing the accelerated sound?