I don't know about labor, but a clutch set will cost maybe $150 last time I priced one. I don't know if GM uses hydraulic clutchs, but if it has one, hang on to your rear.
Just call a local trans shop and ask.

Dick

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.