General Motors is recalling 6,800 pickups from the 2011 model year because a defective clip could allow the automatic transmission’s selector to appear to be in Park when it was not. A worker at the assembly plant discovered the problem.

Did G.M. sell 6,800 lemons to people who bought the pickups? If G.M. did, what was the private information that it had that buyers did not know? If G.M. didn’t, explain why not.