How old is the battery and have you had the negative cable swapped out by the dealership yet? These cars do weird things when it has electrical issues. One more way to get the shifter in and out of park is carefully removing the black square and suing the key blade or something flat to press down on the release. Just be aware if you are trying to start the car you have to be in park or neutral.
http://www.cruzetalk.com/forum/25-g...al-coverage-14311-negative-battery-cable.html
http://www.cruzetalk.com/forum/25-g...al-coverage-14311-negative-battery-cable.html