With auto transmission in reverse, slowly backing up. The steering column
makes a loud clunking noise when steering wheel is turned left or right.

Took it to the Dealer for service. Dealer informed me that a was a rack and
pinion defect. Dealer said he would have to order parts for repair. Dealer
said there is a service bulletin regarding same. I have been all over the
internet searching for the bulletin. Have not found it as on this date.

If anybody else had this happen to them, I would like to hear from you.

Fortunately, for me,  it will be repaired under new car warranty.