Common problem - see
thread
Problem - When I turned my wheel all the way in one direction and then i drive off my driveway I hear a high pitch squeak
Solution (courtesy of irish44j) - check out the bump stops on the back of the steering knuckle - where it "bumps" into the lower control arm at the turn limit. The plastic cap will probably either be missing or worn through.
Part #40039-D0100, description "cap - stop", cost $1.44