Could a GM worker afford college tuition on just two weeks' work in 1965?

"Fifty years ago, the average GM employee could pay for a year of a son or daughter’s college tuition on just two weeks wages."
http://www.politifact.com/truth-o-meter/statements/2016/jan/25/martin-omalley/could-gm-worker-afford-college-tuition-just-two-we/